Updated on 2022/05/26

写真a

 
KAWAKAMI, Yasuo
 
Affiliation
Faculty of Sport Sciences, School of Sport and Sciences
Job title
Professor
Profile

My expertise is in biodynamics (biomechanics and exercise physiology) with the main research interest in the area of muscle mechanics, particularly on the in vivo skeletal muscle behavior during various human movements. Effects of exercise training, growth, aging, and fatigue on the human musculoskeletal system are also in the scope of my research.

Concurrent Post

  • Faculty of Sport Sciences   Graduate School of Sport Sciences

  • Affiliated organization   Global Education Center

Education

  • 1990.04
    -
    1991.03

    University of Tokyo   Graduate School, Division of Education  

  • 1988.04
    -
    1990.03

    University of Tokyo   Graduate School, Division of Education  

  • 1985.04
    -
    1988.03

    University of Tokyo   Faculty of Education  

  • 1983.04
    -
    1985.03

    The University of Tokyo  

Degree

  • The University of Tokyo   Ms. Sci.

  • The University of Tokyo   Ph.D.

Research Experience

  • 2021.04
    -
    Now

    Waseda University   Vice President

  • 2020.09
    -
    Now

    Waseda University   Comprehensive Research Organization   Director

  • 2019.04
    -
    Now

    Human Performance Laboratory, Comprehensive Research Organization, Waseda University   Director

  • 2005
    -
    Now

    Waseda University, Professor

  • 2017.04
    -
    2019.03

    Organization for University Research Initiatives, Waseda University   Human Performance Laboratory   Director

  • 2003
    -
    2005

    Waseda University, Associate Professor

  • 1999
    -
    2003

    University of Tokyo, Associate Professor

  • 1991
    -
    1999

    University of Tokyo, Research Assistant

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Professional Memberships

  •  
     
     

    Japan Society of Golf Sciences

  •  
     
     

    The Japanese Society of Ultrasonic Science on Bone and Muscular Tissue

  •  
     
     

    Japanese Society of Exercise Physiology

  •  
     
     

    Japan Society of Training Science for Exercise and Sport

  •  
     
     

    Japanese Society of Biomechanics

  •  
     
     

    Japanese Society of Physical Fitness and Sports Medicine

  •  
     
     

    Japanese Society of Physical Education, Health and Sport Sciences

  •  
     
     

    International Society of Biomechanics

  •  
     
     

    Tokyo Society of Physical Education,Health and Sport Science

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Research Areas

  • Anatomy   Musculoskeletal system

  • Physical education, and physical and health education

  • Physiology

  • Biomaterials

  • Biomedical engineering

  • Sports sciences

▼display all

Research Interests

  • exercise physiology, sport biomechanics, in vivo measurement, muscle mechanics, muscle architecture, muscle-tendon unit, human, growth and aging, health promotion, sport performance

Papers

  • Determinants of whole-body maximal aerobic performance in young male and female athletes: The roles of lower extremity muscle size, strength and power

    Yamagishi, T, Saito, A, Kawakami, Y

    PLoS One   17 ( 1 ) e0262507  2022.01  [Refereed]

    Authorship:Last author, Corresponding author

    DOI

  • Changes in morphological and mechanical properties of Achilles tendon after rupture and surgery: A follow-up survey of one patient

    Yasuo Kawakami, Taku Wakahara, Shinichi Kawamoto

    Japanese Journal of Bone and Muscle Ultrasound   20 ( 2 ) 5 - 16  2021.08  [Refereed]  [Domestic journal]

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • Characteristics of inhomogeneous lower extremity growth and devolopment in early childhood:a cross-sectional study

    Apibantaweesakul, S, Omura, S, Qi, W, Shiotani H, Evangelidis, P, E, Sado, N, Tanaka, F, Kawakami, Y

    BMC Pediatr.   21 ( 1 ) 552  2021  [Refereed]

    Authorship:Corresponding author

    DOI

  • Effect of shod and barefoot running on muscle mechanical properties

    Saeki, J, Shiotani, H, Kawkami, Y

    J. Sports Med. Phys. Fitness   in press  2021  [Refereed]

    Authorship:Last author

    DOI

  • Inhomogeneous and anisotropic mechanical properties of the triceps surae aponeuroses in older adults: relationships with muscle strength and walking performance

    Shan, X, Evangelidis, P, Yamagishi, T, Otsuka, S, Tanaka, F, Shibata, S, Kawakami, Y

    J. AGING Phys. Act.   29 ( 4 ) 642 - 650  2021  [Refereed]

    Authorship:Corresponding author

     View Summary

    This study investigated (a) site- and direction-dependent variations of passive triceps surae aponeurosis stiffness and (b) the relationships between aponeurosis stiffness and muscle strength and walking performance in older individuals. Seventy-nine healthy older adults participated in this study. Shear wave velocities of the triceps surae aponeuroses at different sites and in two orthogonal directions were obtained in a prone position at rest using supersonic shear imaging. The maximal voluntary isometric contraction torque of the plantar flexors and normal (preferred) and fast (fastest possible) walking speeds (5-m distance) were also measured. The shear wave velocities of the adjoining aponeuroses were weakly associated with plantar flexion torque (r =.23-.34), normal (r =.26), and fast walking speed (r =.25). The results show clear spatial variations and anisotropy of the triceps surae aponeuroses stiffness in vivo, and the aponeurosis stiffness was associated with physical ability in older adults.

    DOI

  • Investigation of the association between human fascia lata thickness and its neighboring tissues’ morphology and function using B-mode ultrasonography

    Otsuka, S, Shan, X, Kurumisawa, K, Omura, S, Yamagishi, T, Naito, M, Kawakami, Y

    J. Anat.   239 ( 5 ) 1114 - 1122  2021  [Refereed]

    Authorship:Corresponding author

    DOI

  • Hamstrings load bearing in different contraction types and intensities : A shear-wave and B-mode ultrasonographic study

    Evangelidis, E, P, Shan, X, Otsuka, S, Yang, C, Yamagishi, T, Kawakami, Y

    PLoS One   16 ( 5 ) e0251939  2021  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    The main aim was to examine the load bearing of individual hamstring muscles in different contraction types and intensities, through local stiffness measurement by shear wave elastography (SWE). A secondary aim was to examine the relationship between the SWE stiffness measure and hamstrings morphology. Ten healthy males (age 22.1±4.1 years; height 173.7±5.9 cm; body mass 68.6±12.4 kg; mean ± SD) performed knee flexions on an isokinetic dynamometer at different intensities (20-70%MVC, random order) in three separate, randomized conditions: isometric (ISO), concentric (CON) and eccentric (ECC). SWE was used to measure muscle shear wave velocity (SWV) in biceps femoris long head (BFlh), semitendinosus (ST) and semimembranosus (SM) during contraction. Muscle anatomical cross-sectional area (ACSA) was measured with magnetic resonance imaging and muscle architecture with B-mode ultrasonography. Muscle SWV increased linearly with contraction intensity, but at a varying rate among muscles and contraction types. ST exhibited greater SWV than BFlh and SM in all contraction types, however, there was an upward shift in the SM SWV-torque relationship in ECC compared to ISO and CON. Strong negative correlations were found between peak ISO SWV and ST ACSA (r = -0.81, p = 0.005) and BFlh pennation angle (r = -0.75, p = 0.012). These results suggest that ST has a primary role in hamstrings load bearing in all contraction types, likely due to its morphology; however, there is evidence of increased contribution from SM in eccentric muscle actions.

    DOI PubMed

  • Track distance runners exhibit bilateral differences in the plantar fascia stiffness

    Shiotani, H, Yamashita, R, Mizokuchi, T, Sado, N, Naito, M, Kawakami, Y

    Sci. Rep.   11 ( 1 )  2021  [Refereed]

    Authorship:Corresponding author

     View Summary

    <title>Abstract</title>Human steady-state locomotion modes are symmetrical, leading to symmetric mechanical function of human feet in general; however, track distance running in a counterclockwise direction exposes the runner’s feet to asymmetrical stress. This may induce asymmetrical adaptation in the runners’ foot arch functions, but this has not been experimentally tested. Here, we show that the plantar fascia (PF), a primary structure of the foot arch elasticity, is stiffer for the left than the right foot as a characteristic of runners, via a cross-sectional study on 10 track distance runners and 10 untrained individuals. Shear wave velocity (index of tissue stiffness: SWV) and thickness of PF and foot dimensions were compared between sides and groups. Runners showed higher PF SWV in their left (9.4 ± 1.0 m/s) than right (8.9 ± 0.9 m/s) feet, whereas untrained individuals showed no bilateral differences (8.5 ± 1.5 m/s and 8.6 ± 1.7 m/s, respectively). Additionally, runners showed higher left to right (L/R) ratio of PF SWV than untrained men (105.1% and 97.7%, respectively). PF thickness and foot dimensions were not significantly different between sides or groups. These results demonstrate stiffer PF in the left feet of runners, which may reflect adaptation to their running-specific training that involves asymmetrical mechanical loading.

    DOI

  • Inhomogeneous and anisotropic mechanical properties of the triceps surae muscles and aponeuroses in vivo during submaximal muscle contraction

    Shan, X, Otsuka, S, Li, L, Kawakami, Y

    J. Biomech.   121   110396 - 110396  2021  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    This study aimed to identify characteristics of the triceps surae muscles and aponeuroses stiffness in vivo, during graded isometric submaximal plantarflexion efforts. A total of twelve healthy male subjects (age: 27 ± 4 years) participated and were required to stay at rest (0% MVC) and perform isometric submaximal plantar flexion contractions (20%, 40%, 60% of MVC) on a dynamometer. Young's modulus of triceps surae muscles and the adjoining aponeuroses between gastrocnemii and soleus at the proximal and distal sites were obtained in the longitudinal direction (along muscle's line of action) during at rest and submaximal plantar flexions. Additionally, Young's modulus of adjoining aponeuroses in the transverse direction at the distal sites was also calculated. Young's modulus of LG (lateral gastrocnemius), SOL-lat (lateral part of soleus) and LPS (superficial aponeurosis of LG) at the proximal site showed significant (p < 0.001) graded increase response to the submaximal contraction levels. Besides, in the lateral side, significant differences in the Young's modulus of aponeuroses were observed between longitudinal and transverse directions at rest and during contractions (p < 0.002). Changes of aponeuroses length were significantly correlated with Young's modulus changes of the proximal gastrocnemii muscle bellies (r = 0.43-0.45, p = 0.006-0.008) and superficial aponeuroses (r = 0.49-0.60, p < 0.002). The results further indicate that the triceps surae muscles and aponeuroses showed inhomogeneous and anisotropic mechanical properties during submaximal muscle contractions, and the stiffening effect of muscle belly possibly make influence on the mechanical properties of aponeuroses during muscle contractions, especially for the lateral gastrocnemius.

    DOI PubMed

  • An acute eccentric exercise increases circulating myomesin 4 fragments

    Lee, M, Shin, J, Kato,T, Kanda, K, Oikawa, S, Sakuma, J, Sugama, Y, Kawakami, Y, Suzuki, K, Akimoto, T

    J. Physiol. Sci.   71 ( 1 ) 1 - 6  2021  [Refereed]

     View Summary

    <title>Abstract</title>Discovery of blood biomarkers to evaluate exercise-induced muscle damage have attracted many researchers and coaches. This study aimed to determine changes in circulating myomesin 3 fragments as a novel biomarker for exercise-induced muscle damage. Nine healthy males performed 10 sets of 40 repetitions of one-leg calf-raise exercise by the load corresponding to the half of their body weight. Muscle symptoms were evaluated by a visual analog scale (VAS). Blood samples were collected before and 2, 4, 24, 48, 72, and 96 h post-exercise. Plasma myomesin 3 fragments levels were significantly increased at 96 h after the eccentric exercise. The myomesin 3 fragments levels were correlated with other biomarkers of muscle damage and the muscle symptoms. These results suggest that the circulating myomesin 3 fragments levels are potential biomarkers reflecting eccentric exercise-induced muscle damage.

    DOI

  • Minute oscillation stretching: a novel modality for reducing musculotendinous stiffness and maintaining muscle strength

    Ikeda, N, Yonezu, T, Kawakami, Y

    Scand. J. Med. Sci. Sports   31 ( 1 ) 104 - 114  2021  [Refereed]

    Authorship:Corresponding author

    DOI

  • Positional difference of malleoli-midpoint from three-dimensional geometric centre of rotation of ankle and its effect on ankle joint kinetics

    Sado, N, Shiotani, H, Saeki, J, Kawakami, Y

    Gait Posture   83   223 - 229  2021  [Refereed]

    DOI

  • Human plantar fascial dimensions and shear wave velocity change in vivo as a function of ankle and metatarsophalangeal joint positions

    Shiotani, H, Maruyama, N, Kurumisawa, K, Yamagishi, T, Kawakami, Y

    J. Appl. Physiol.   130 ( 2 ) 390 - 399  2021  [Refereed]

    Authorship:Corresponding author

     View Summary

    Joint angle dependence and site specificity of the plantar fascial dimensions and SWV were examined by combining sagittal magnetic resonance and supersonic shear imaging techniques. We revealed that the site-specific changes in PF SWV were related to joint angle positions, i.e., PF slackness and elasticity changed in varying combinations of ankle and MTP angle. Our findings suggest that PF can elastically support the foot arch throughout the stance phase of human bipedal locomotion.

    DOI

  • Jumping Motion Generation for Humanoid Robot Using Arm Swing Effectively and Changing in Foot Contact Status *

    Mineshita, H, Otani, T, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)    2020.10

    DOI

  • Acute effects of long‐distance running on mechanical and morphological properties of the human plantar fascia

    Shiotani, H, Mizokuchi, T, Yamashita, R, Naito, M, Kawakami, Y

    Scand. J. Med. Sci. Sports   30 ( 8 ) 1360 - 1368  2020.08  [Refereed]

    Authorship:Corresponding author

    DOI PubMed

  • 人間の特徴に着目した投球ヒューマノイドロボットの開発(第1報:弾性力と慣性力を利用した投球が可能な投球腕部機構の開発)

    渡部竜也, 峯下弘毅, 大谷拓也, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   38th  2020

    J-GLOBAL

  • Development of a trapezoidal leaf spring for a small and light variable joint stiffness mechanism

    Mineshita, H, Otani, T, Hashimoto, K, Sakaguchi, M, Kawakami, Y, Lim, H, Takanishi, A

    23rd CISM IFToMM Symposium on Robot Design, Dynamics and Control   23   355 - 363  2020  [Refereed]

  • Investigation of parallel connection circuit by hydraulic direct-drive system for biped humanoid robot focusing on human running motion

    Mineshita, H, Otani, T, Hashimoto, K, Sakaguchi, M, Kawakami, Y, Lim, H, Takanishi, A

    23rd CISM IFToMM Symposium on Robot Design, Dynamics and Control   23   34 - 42  2020  [Refereed]

  • Effects of the time-of-day (morning vs. afternoon) of implementing a combined physical and cognitive exercise program on cognitive functions and mood of older adults: A randomized controlled study

    Takahashi, T, Haitani, T, Tanaka, F, Yamagishi, T, Kawakami, Y, Shibata, S, Kumano, H

    Adv. Geront.   33 ( 3 ) 595 - 599  2020  [Refereed]

    DOI

  • エコーによるFasciaの弾性評価

    川上泰雄

    臨床スポーツ医学   37 ( 2 ) 184 - 190  2020  [Refereed]

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • Improving road bike leaning skills on downhill corners (developing a system for detecting curvature change points and the angle of a road bike while riding)

    Sakai, D, Uchida, N, Enomoto, S, Iwata, S, Kawakami, Y, Wesugi, S

    Proceedings 2020   49   153 - 153  2020  [Refereed]

    DOI

  • アキレス腱のバイオメカニクス

    川上泰雄

    臨床スポーツ医学   37 ( 7 ) 750 - 759  2020  [Refereed]

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • Site dependent elastic property of human iliotibial band and the effect of hip and knee joint angle configuration

    Otsuka, S, Shan, X, Yoshida, K, Yakura, T, Naito, M, Kawakami, Y

    J. Biomech.   109   109919  2020  [Refereed]

    Authorship:Corresponding author

     View Summary

    © 2020 The iliotibial band (ITB) is the lateral thickening of the fascia lata. The ITB has been extensively studied for its relevance to injury, but not much is known about its elastic properties. We aimed to investigate the site- and joint angle-dependence of ITB elasticity. We tested twelve healthy males (22–30 years; in vivo) and twelve male cadavers (69–93 years; cadaver). The Young's modulus of the ITB was measured in the longitudinal direction at five sites (over the proximal, middle, and distal bellies of the vastus lateralis (VL), superior border of the patella, and between femur and tibia) of the right limb, by ultrasound shear wave elastography (in vivo) and the tensile test (cadaver). Joint angle-dependence was also studied for nine different positions (knee angles at 0, 25, 90˚ x hip angles at 0, 40, 90˚) (in vivo). Over VL, the ITB was more compliant at the distal (17.6–190.1 kPa; in vivo, 219.4 ± 68.8 MPa; cadaver, mean ± SD) than other sites (24.2–221.4 kPa, 337.9–362.7 MPa). The ITB at the superior border of the patella and between femur and tibia was stiffer in vivo (31.8–271.8 and 50.9–208.8 kPa), while it was more compliant in cadavers (113.4 ± 63.7 and 130.4 ± 73.7 MPa), compared to other sites. The ITB became stiffer associated with increasing hip extension angle and knee flexion angle, and the hip remarkably affecting the values regardless of site (in vivo). Our findings have clinical significance with respect to the site- and joint angle-dependence of ITB-related overuse injury.

    DOI PubMed

  • Robotic Ankle Mechanism Capable of Kicking While Jumping and Running and Adaptable to Change in Running Speed

    Mineshita, H, Otani, T, Hashimoto, K, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    2019 IEEE-RAS 19th International Conference on Humanoid Robots (Humanoids)    2019.10

    DOI

  • Site- and sex-differences in morphological and mechanical properties of the plantar fascia: A supersonic shear imaging study

    Shiotani, H, Yamashita, R, Mizokuchi, T, Naito, M, Kawakami,Y

    J. Biomech.   85   198 - 203  2019.03  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    The purpose of this study was to investigate the site- and sex-differences in the morphological and mechanical properties of the plantar fascia (PF) in humans. The thickness and shear wave velocity (SWV) of PF at five different sites between the medial calcaneal tubercle and the second toe were measured for 40 healthy young participants (20 males and 20 females) using supersonic shear imaging (SSI). The thickness and SWV measurements were highly repeatable (ICC ≥ 0.93). The proximal sites of PF around the calcaneal attachment were significantly thicker and stiffer (higher SWV values) than the middle and distal sites (p < 0.05). In addition, females had significantly thinner PF in proximal and middle sites than males, while being significantly stiffer in regardless of the sites, compared with males (p < 0.05). The results of the present study partly support previous findings on the site- and sex-differences in PF morphology, and further reveal inhomogeneity and sex-specificity of PF stiffness. The present study widely opens the possibility of evaluating PF functions in vivo.

    DOI PubMed

  • 深筋膜の厚さと筋厚および筋力との関連性(The relationships between deep fascia thickness and muscle thickness and strength)

    Otsuka, S, Shan, X, Kurumisawa, K, Omura, S, Kawakami, Y

    J. Phys. Fitness Sports Med.   8 ( 6 ) 320 - 320  2019

    Authorship:Corresponding author

  • 骨盤運動に着目した2足走行ロボットの開発(第23報:高出力,剛性変化可能で人間と同等の質量特性を有する下腿機構)

    黒岩祐志, 大谷拓也, 峯下弘毅, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   37th  2019

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第24報:2足走行ロボットへの搭載に向けた油圧駆動股関節機構)

    水上英紀, 大谷拓也, 橋本健二, 橋本健二, 清水自由理, 清水自由理, 峯下弘毅, 川上泰雄, 阪口正律, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   37th  2019

    J-GLOBAL

  • Improvement of Hip Joint Output of Biped Humanoid Robot by Parallel Connection of Hydraulic Direct-Drive System Inspired by Human Running Motion

    水上英紀, 大谷拓也, 清水自由理, 清水自由理, 橋本健二, 阪口正律, 川上泰雄, LIM Hun-ok, LIM Hun-ok, 高西淳夫

    フルードパワーシステム講演会講演論文集   2019  2019

    J-GLOBAL

  • スポーツ選手を対象とした骨格筋量の計測をどう捉えるか

    江間 諒一, 若原 卓, 川上 泰雄

    バイオメカニクス研究   23 ( 1 ) 52 - 59  2019  [Invited]

    J-GLOBAL

  • Morphological and mechanical properties of the human triceps surae aponeuroses taken from elderly cadavers: Implications for muscle-tendon interactions

    Shan, X, Otsuka, S, Yakura, T, Naito, M, Nakano, T, Kawakami,Y

    PLoS ONE   14 ( 2 ) e0211485  2019  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    The human triceps surae (two gastrocnemii and soleus) has aponeuroses in the proximal and distal aspects, the latter of which insert into the calcaneus by sharing the common Achilles tendon. These tendinous tissues are known to have elasticity and upon muscle contraction the aponeurosis is stretched both longitudinally (along the muscle's line of action) and transversely. Higher aponeurosis transverse deformability has been documented, but there is a paucity of information on the morphology and mechanical properties of human aponeurosis. This study aimed to identify morphological and mechanical characteristics of the human triceps surae aponeuroses. Twenty-five triceps surae muscle-tendon units were procured from 13 human donors (formalin fixed, 6 males, 7 females) aged 67-91 years. Specimens of aponeuroses were excised from the eight regions (posterior and anterior regions of the gastrocnemius medialis and lateralis, medial and lateral parts of soleus; proximal, middle, and distal sites each, 2-4 cm × 2-4 cm). Aponeurosis thickness was measured using a digital caliper. Uniaxial tensile tests were implemented to determine the mechanical properties of specimens loaded longitudinally (along the muscle's line of action) and transversely. The aponeurosis thickness showed significant differences between muscles and sites, while Young's modulus showed direction-dependent (longitudinal vs. transverse) differences within sites. Results show different morphology and mechanical properties of aponeuroses between synergist muscles. The reason for site-dependent differences in stiffness is due to a reduced aponeurosis thickness rather than a reduction in the material property. The anisotropic elastic feature (differences between longitudinal and transverse directions) of the aponeuroses was more pronounced than previous in vivo findings, suggesting inherent material design of the aponeurosis that matches three-dimensional contractile behavior of muscle fibers.

    DOI PubMed

  • Stretching combined with repetitive small length changes of the plantar flexors enhances their passive extensibility while not compromising strength

    Ikeda, N, Inami, T, Kawakami, Y

    J. Sports Sci. Med.   18 ( 1 ) 58 - 64  2019  [Refereed]  [International journal]

     View Summary

    Static stretching increases flexibility but can decrease muscle strength; therefore, a method that would avoid the latter has been longed for. In this study, a novel stretching modality was developed that provides repetitive small length changes to the plantar flexor muscles undergoing passive static stretching (minute oscillation stretching). We investigated the effects of minute oscillation stretching on muscle strength and flexibility and its continuance. Isometric plantar flexion strength and maximal ankle joint dorsiflexion angle (dorsiflexion range of motion) were measured in 10 healthy young men (22 ± 2 years) before (pre) and immediately after (post) 3 types of stretching: static stretching, minute oscillation stretching at 15 Hz, and no intervention (control). The dorsiflexion range of motion was also measured at 15, 30, and 60 min post-stretching. Elongation of the medial gastrocnemius and Achilles tendon was determined by ultrasonography. Plantar flexion strength significantly decreased by 4.3 ± 3.5% in static stretching but not in minute oscillation stretching. The dorsiflexion range of motion significantly increased both in static stretching (7.2 ± 8.1%) and minute oscillation stretching (11.2 ± 14.6%), which was accompanied by a significantly larger muscle elongation but not tendon elongation. Elevated dorsiflexion range of motion was maintained until 30 min after minute oscillation stretching, while levels returned to baseline (pre-intervention) 15 min after static stretching. All variables remained unchanged in the control condition. In conclusion, minute oscillation stretching improves extensibility of the muscle belly without decreasing strength. Furthermore, the augmented flexibility to a similar extent to static stretching is retained for 30 min in minute oscillation stretching and within 15 min in static stretching.

    PubMed

  • Dependence of muscle and deep fascia stiffness on the contraction levels of the quadriceps: an in vivo supersonic shear-imaging study

    Otsuka, S, Shan, X, Kawakami, Y

    J. Electromyogr. Kinesiol.   45   33 - 40  2019  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    In the present study we investigated muscle contraction-driven changes in deep fascia mechanical property, to reveal mechanical interactions between them. Fourteen males (22-37 yr) performed isometric knee extension at 20, 40, 60% of the maximal voluntary contraction (MVC). During each contraction and at rest, shear wave velocities (SWV) of the rectus femoris (RF) and vastus lateralis (VL) and fascia lata were measured in both longitudinal and transverse ultrasound transducer directions relative to the thigh. Surface electromyogram was recorded from RF and VL and root mean square (RMS) values were determined. The slopes of the linear correlations between normalized SWV (%SWV: relative to rest) and RMS (%RMSEMG: relative to MVC) were calculated for different sites and directions. Both muscles and fascia lata became stiffer as the muscle activation level increased to comparable degrees, with the slopes of those changes being 4-9 times higher in the longitudinal than transverse direction. The fascia lata showed lower slopes than those of muscles in the longitudinal direction while in the transverse direction neither parts showed significant differences. These results suggest that the force produced by the muscles partly transmitted to the fascia lata in the longitudinal and transverse directions, causing anisotropic changes in musculofascial entity.

    DOI PubMed

  • Walking and finger tapping can be done with independent rhythms

    Qi, W, Nakajima, T, Sakamoto, M, Kato, K, Kawakami, Y, Kanosue, K

    Sci. Rep.   9 ( 1 ) 7620  2019  [Refereed]

    DOI

  • Effects of instrument-assisted soft tissue mobilization on musculoskeletal properties

    Ikeda, N, Otsuka, S, Kawanishi, Y, Kawakami, Y

    Med. Sci. Sports Exerc.   51 ( 10 ) 2166 - 2172  2019  [Refereed]  [International journal]

     View Summary

    PURPOSE: Instrument-assisted soft tissue mobilization (IASTM) has been reported to improve joint range of motion (flexibility). However, it is not clear whether this change in the joint range of motion is accompanied by any alterations in the mechanical and/or neural properties. This study aimed to investigate the effects of IASTM in plantarflexors and Achilles tendon on the mechanical and neural properties of them. METHODS: This randomized, controlled, crossover study included 14 healthy volunteers (11 men and 3 women, 21-32 yr). IASTM was performed on the skin over the posterior part of the lower leg for 5 min and targeted the soft tissues (gastrocnemii, soleus, and tibialis posterior muscles; overlying deep fascia; and Achilles tendon). As a control condition, the same participants rested for 5 min between pre- and postmeasurements without IASTM on a separate day. The maximal ankle joint dorsiflexion angle (dorsiflexion range of motion), the peak passive torque (stretch tolerance), and the ankle joint stiffness (slope of the relationship between passive torque and ankle joint angle) during the measurement of the dorsiflexion range of motion and muscle stiffness of the triceps surae (using shear wave elastography) were measured before and immediately after the interventions. RESULTS: After IASTM, the dorsiflexion range of motion significantly increased by 10.7% ± 10.8% and ankle joint stiffness significantly decreased by -6.2% ± 10.1%. However, peak passive torque and muscle stiffness did not change. All variables remained unchanged in the repeated measurements of controls. CONCLUSION: IASTM can improve joint range of motion, without affecting the mechanical and neural properties of the treated muscles.

    DOI PubMed

  • Intracellular-to-total water ratio explains the variability of muscle strength dependence on the size of the lower leg in the elderly

    Yoshida, T, Yamada, Y, Tanaka, T, Yamagishi, T, Shibata, S, Kawakami, Y

    Exp. Gerontol.   113   120 - 127  2018.11  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    Bioelectrical impedance spectroscopy (BIS) can assess intracellular water (ICW) and total water (TW) in limbs. This study aimed to examine whether BIS can explain a part of the inter-individual variation of the muscle size-strength relationship in older adults. We analyzed the data of 79 participants aged 64-86 years. The maximal voluntary isometric torques of dorsiflexion and plantar flexion on the right side were measured. The anterior and posterior muscle thickness (MT) in the right lower leg was assessed using ultrasonography. The length of the right lower leg (L) was measured, and the ICW-to-TW ratio (ICW/TW) in the right lower leg was obtained using BIS. The MT was multiplied by L to represent an index of muscle volume (MV). Correlation and stepwise regression analyses were performed. The anterior and posterior MT × L significantly and positively correlated with the muscle torque of dorsiflexion and plantar flexion (r = 0.710 and 0.649, respectively, P < 0.001). In the stepwise regression analyses, ICW/TW was selected as a significant predictor of muscle torque independent of MT × L (P < 0.05) for both dorsiflexion and plantar flexion. Electrical parameters of BIS (membrane capacitance, characteristics frequency, and phase angle) in the lower leg also significantly correlated with muscle torques. In addition, the skeletal muscle mass index (appendicular lean mass/height2) was also associated with ICW/TW (P < 0.001). The present results suggest that ICW/TW explains the interindividual variations of the muscle size-strength relationship.

    DOI PubMed

  • Site specificity of mechanical and structural properties of human fascia lata and their gender differences: A cadaveric study

    Otsuka, S, Yakura, T, Ohmichi, Y, Ohmichi, M, Naito, M, Nakano, T, Kawakami, Y

    J. Biomech.   77   69 - 75  2018.08  [Refereed]  [International journal]

    Authorship:Corresponding author

     View Summary

    The whole thigh muscles are covered with the fascia lata, which could have morphological and mechanical features that match the underlying muscles' functions. In this study, we investigated the morphological and elastic properties of the human fascia lata taken from four (anterior, medial, lateral, and posterior) sites on the thigh of 17 legs of 12 cadavers (6 males and 6 females, 75-92 years). The thickness of the fascia lata was determined with a caliper. The interwoven collagen fiber's directions were measured and classified into longitudinal, transverse, and diagonal in two opposing directions, relative to the thigh. Tensile strength test along the longitudinal and transverse directions was performed, and the stiffness, Young's modulus, and hysteresis were determined. Fascia lata at the lateral site (0.8 ± 0.2 mm) was significantly thicker compared to other sites (0.2-0.3 mm). Fiber's directions showed substantial variability among sites, and longitudinally directed fibers were higher in proportion (28-32%) than those in other directions (20-27%) at all sites except for the posterior site. The stiffness and Young's modulus in the longitudinal direction (20-283 N/mm; 71.6-275.9 MPa, highest at the lateral site) were significantly higher than in the transverse direction (3-16 N/mm; 3.2-41.9 MPa, lowest at the lateral site). At the medial site, the proportion of the transversely directed fibers was higher in females than males, with higher stiffness and Young's modulus thereof. The present study shows that the fascia lata possesses site- and gender-dependence of the morphological characteristics and elastic properties.

    DOI PubMed

  • Single-joint Eccentric Knee Extension Training Induces Selective Hypertrophy: A Potential Preventive Measure Against Strain Injuries

    Sumiaki Maeo, Xiyao Shan, Shun Otsuka, Hiroaki Kanehisa, Yasuo Kawakami

    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE   50 ( 5 ) 783 - 783  2018.05

  • Unstable rocker shoes promote recovery from marathon-induced muscle damage in novice runners

    Nakagawa, K, Inami, T, Yonezu, T, Kenmotsu, Y, Narita, T, Kawakami, Y, Kanosue, K

    Scand. J. Med. Sci. Sports   28 ( 2 ) 621 - 629  2018.02  [Refereed]

     View Summary

    We recently reported that wearing unstable rocker shoes (Masai Barefoot Technology: MBT) may enhance recovery from marathon race-induced fatigue. However, this earlier study only utilized a questionnaire. In this study, we evaluated MBT utilizing objective physiological measures of recovery from marathon-induced muscle damages. Twenty-five university student novice runners were divided into two groups. After running a full marathon, one group wore MBT shoes (MBT group), and the control group (CON) wore ordinary shoes daily for 1 week following the race. We measured maximal isometric joint torque, muscle hardness (real time tissue elastography of the strain ratio) in the lower limb muscles before, immediately after, and 1, 3, and 8 days following the marathon. We calculated the magnitude of recovery by observing the difference in each value between the first measurement and the latter measurements. Results showed that isometric torques in knee flexion recovered at the first day after the race in the MBT group while it did not recover even at the eighth day in the CON group. Muscle hardness in the gastrocnemius and vastus lateralis showed enhanced recovery in the MBT group in comparison with the CON group. Also for muscle hardness in the tibialis anterior and biceps femoris, the timing of recovery was delayed in the CON group. In conclusion, wearing MBT shoes enhanced recovery in lower leg and thigh muscles from muscle damage induced by marathon running.

    DOI PubMed

  • Upper-body control and mechanism of humanoids to compensate for angular momentum in the yaw direction based on human running

    Otani, T, Hashimoto, K, Miyamae, S, Ueta, H, Natsuhara, A, Sakaguchi, M, Kawakami, Y, Lim, H, Takanishi, A

    App. Sci.   8 ( 1 ) 44 - 44  2018.01  [Refereed]

     View Summary

    Many extant studies proposed various stabilizing control methods for humanoids during the stance phase while hopping and running. Although these methods contribute to stability during hopping and running, humanoid robots do not swing their legs rapidly during the flight phase to prevent rotation in the yaw direction. Humans utilize their torsos and arms when running to compensate for the angular momentum in the yaw direction generated by leg movement during the flight phase. In this study, we developed an angular momentum control method based on human motion for a humanoid upper body. The method involves calculation of the angular momentum generated by the movement of the humanoid legs and calculation of the torso and arm motions required to compensate for the angular momentum of the legs in the yaw direction. We also developed a humanoid upper-body mechanism having human link length and mass properties, using carbon-fiber-reinforced plastic and a symmetric structure for generating large angular momentum. The humanoid robot developed in this study could generate almost the same angular momentum as that of a human. Furthermore, when suspended in midair, the humanoid robot achieved angular momentum compensation in the yaw direction.

    DOI

  • 骨盤運動に着目した2足走行ロボットの開発(第22報:能動駆動と弾性発揮を活用する跳躍運動の実現)

    大谷拓也, 植田大貴, 橋本健二, 橋本健二, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   36th  2018

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第21報:跳躍・走行時の能動蹴り出しや走行速度の変化に対応した足関節機構)

    峯下弘毅, 大谷拓也, 橋本健二, 橋本健二, 張春宇, 尾原睦月, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   36th  2018

    J-GLOBAL

  • A cross-sectional study on the mechanical properties of the Achilles tendon with growth

    Mogi, Y, Torii, S, Kawakami, Y, Yanai, T

    Eur. Appl. Physiol.   118 ( 1 ) 185 - 194  2018.01  [Refereed]

     View Summary

    Purpose: This study aimed to elucidate growth pattern of mechanical properties of the Achilles tendon and to examine if imbalance between growth of bone and muscle–tendon unit occurs during adolescence. Methods: Fourteen elementary school boys, 30 junior high school boys, 20 high school boys and 15 male adults participated in this study. Based on estimated age at peak height velocity (PHV), junior high school boys were separated into two groups (before or after PHV). An ultrasonography technique was used to determine the length, cross-sectional area, stiffness and Young’s modulus of Achilles tendon. In addition, the maximum strain in “toe region” (strainTP) was determined to describe the balance between growth of bone and muscle–tendon unit. Results: No group difference was observed in length, cross-sectional area and strainTP among the groups. However, stiffness and Young’s modulus in after PHV groups were significantly higher than those of elementary school boys and before PHV groups (p ≤ 0.05). Conclusions: These results indicate that mechanical properties of Achilles tendon change dramatically at and/or around PHV to increased stiffness. The widely believed assumption that muscle–tendon unit is passively stretched due to rapid bone growth in adolescence is not supported.

    DOI PubMed

  • Neuromuscular adaptations to work-matched maximal eccentric vs. concentric training

    Maeo, S, Shan, X, Otsuka, S, Kanehisa, H, Kawakami, Y

    Med. Sci. Sports Exerc.   50 ( 8 ) 1629 - 1640  2018  [Refereed]  [International journal]

     View Summary

    It is unclear whether the superiority of eccentric over concentric training on neuromuscular improvements is due to higher torque (mechanical loading) achievable during eccentric contractions or due to resulting greater total work. PURPOSE: This study aimed to examine neuromuscular adaptations after maximal eccentric versus concentric training matched for total work. METHODS: Twelve males conducted single-joint isokinetic (180°·s) maximal eccentric contractions of the knee extensors in one leg (ECC-leg) and concentric in the other (CON-leg), 6 sets per session (3-5 sets in the initial 1-3 sessions), 2 sessions per week for 10 wk. The preceding leg performed 10 repetitions per set. The following leg conducted the equivalent volume of work. In addition to peak torque during training, agonist EMG and MRI-based anatomical cross-sectional area (ACSA) and transverse relaxation time (T2) at midthigh as reflective of neural drive, hypertrophy, and edema, respectively, were assessed weekly throughout the training period and pre- and posttraining. Whole muscle volume was also measured pre- and posttraining. RESULTS: Torque and EMG (in trained contraction conditions) significantly increased in both legs after week 1 (W1) and week 4 (W4), respectively, with a greater degree for ECC-leg (torque +76%, EMG +73%: posttraining) than CON-leg (+28%, +20%). ACSA significantly increased after W4 in ECC-leg only (+4%: posttraining), without T2 changes throughout. Muscle volume also increased in ECC-leg only (+4%). Multiple regression analysis revealed that changes (%Δ) in EMG solely explained 53%-80% and 30%-56% of the total variance in %Δtorque through training in ECC-leg and CON-leg, respectively, with small contributions (+13%-18%) of %ΔACSA for both legs. CONCLUSION: Eccentric training induces greater neuromuscular changes than concentric training even when matched for total work, whereas most of the strength gains during 10-wk training are attributable to the increased neural drive.

    DOI PubMed

  • Localization of muscle damage within the quadriceps femoris induced by different types of eccentric exercises

    Maeo, S, Saito, A, Otsuka, S, Shan, X, Kanehisa, H, Kawakami, Y

    Scand. J. Med. Sci. Sports   28 ( 1 ) 95 - 106  2018.01  [Refereed]

     View Summary

    This study examined localization of muscle damage within the quadriceps femoris induced by different types of eccentric exercises by using transverse relaxation time (T2)-weighted magnetic resonance imaging (MRI). Thirty-three young males performed either of the following three exercises: single-joint eccentric contraction of the knee extensors (KE), eccentric squat (S), or downhill walking (DW) (n=11/exercise). KE and S consisted of 5-set×10-lowering of 90% one-repetition maximum load. DW was performed for 60 minutes with −10% slope, 6 km/h velocity, and 20% body mass load carried. At pre- and 24-, 48-, and 72-hours post-exercise, T2-MRI was scanned and T2 values for the rectus femoris (RF), vastus intermedius (VI), vastus lateralis (VL), and vastus medialis (VM) at proximal, middle, and distal sites were calculated. Additionally, soreness felt when static pressure was applied to these sites and maximal isometric knee extension torque were measured. Maximal torque significantly (P&lt
    .05) decreased (7%-15%) at 24-48 hours after all exercises. T2 significantly increased (3%-9%) at 24-72 hours after all exercises, with heterogeneities within the muscles found in each exercise. Effect size and peak change of T2, as well as soreness, overall indicated that the proximal RF after KE and middle VM after S and DW were most affected by these exercises. The VL did not show any significant T2 increase after all exercises. These results suggest that muscle damage specifically localizes at the proximal RF by KE and at the middle VM by S and DW, while the VL is least damaged regardless of the exercises.

    DOI PubMed

  • Ankle and foot mechanism mimicking joint stiffness and following motion based on human. Ankle and Foot Mechanism Joint Stiffness

    Otani, T, Hashimoto, K, Natsuhara, A, Sakaguchi, M, Kawakami, Y, Lim, H.-O, Takanishi, A

    ROMANSY22-Robot Design, Dynamics and Control     86 - 93  2018  [Refereed]

    DOI

  • Thigh and psoas major muscularity and its relation to running mechanics in sprinters

    Ema, R, Sakaguchi, M, Kawakami, Y

    Med. Sci. Sports Exerc.   50 ( 10 ) 2085 - 2091  2018  [Refereed]

    DOI

  • Jumping motion generation of a humanoid robot utilizing human-like joint elasiticy

    Otani, T, Hahimoto, K, Ueta, H, Sakaguchi, M, Kawakami, Y, Lim, H.-O, Takanishi, A

    2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)     8707 - 8714  2018  [Refereed]

  • Riding posture affects quadriceps femoris oxygenation during an incremental cycle exercise in cycle-based athletes

    Saito, A, Goda, M, Yamagishi, T, Kawakami, Y

    Physiol. Rep.   6 ( 16 ) e13832  2018  [Refereed]

    DOI

  • Trunk motion control during the flight phase while hopping considering angular momentum of a humanoid

    Otani ,T, Hashimoto, K, Isomichi, T, Natsuhara, A, Sakaguchi, M, Kawakami, Y, Lim. H-O, Takanishi, A

    Advanced Robotics    2018  [Refereed]

    DOI

  • Single‐joint eccentric knee extension training preferentially trains the rectus femoris within the quadriceps muscles

    Maeo, S, Shan, X, Otsuka, S, Kanehisa, H, Kawakami, Y

    Transl. Sports Med.   1   212 - 220  2018  [Refereed]

    DOI

  • Effect of hip joint angle on concentric knee extension torque

    Ema, R, Wakahara, T, Kawakami, Y

    J. Electromyogr. Kinesiol.   37   141 - 146  2017.12  [Refereed]

     View Summary

    This study tested the hypothesis that the effect of hip joint angle on concentric knee extension torque depends on knee joint angle during a single knee extension task. Twelve men performed concentric knee extensions in fully extended and 80 degrees flexed hip positions with maximal effort. The angular velocities were set at 30 degrees s(-1) and 180 degrees s(-1). The peak torque and torques attained at 30 degrees, 50 degrees, 70 degrees and 90 degrees (anatomical position= 0 degrees) of the knee joint were compared between the two hip positions. Muscle activations of the vastus lateralis, medialis, rectus femoris and biceps femoris were determined using surface electromyography. The peak torque was significantly greater in the flexed than in the extended hip position irrespective of angular velocity. The torques at 70 degrees and 90 degrees of the knee joint at both angular velocities and at 50 degrees at 180 degrees s(-1) were significantly greater in the flexed than in the extended hip position, whereas corresponding differences were not found at 30 degrees (at either angular velocity) and 50 degrees (at 30 degrees s(-1)) of the knee joint. No effect of hip position on muscle activation was observed in any muscle. These results supported our hypothesis and may be related to the force-length and force-velocity characteristics of the rectus femoris.

    DOI

  • Effect of knee alignment on the quadriceps femoris muscularity: Cross-sectional comparison of trained versus untrained individuals in both sexes

    Ema, R, Wakahara, T, Hirayama, K, Kawakami, Y

    PLoS One   12 ( 8 ) e0183148  2017.08  [Refereed]

     View Summary

    Knee alignment is suggested to be a factor affecting each quadriceps femoris muscle size, and knee alignment such as Q-angle differs between men and women. Also, training can induce inhomogeneous hypertrophy among the quadriceps femoris, thereby leading to different component characteristics of the muscles. If Q-angle is a major determinant of the quadriceps femoris muscularity, it is hypothesized that the sex-related difference in the quadriceps femoris muscularity, if any, is further highlighted in trained individuals, being associated with Q-angle. We tested this hypothesis. Magnetic resonance images of the right thigh were obtained from 26 varsity rowers as trained subjects (13 for each sex) and 34 untrained individuals as controls (17 for each sex). From the images, muscle volume of each constituent of the quadriceps femoris (vastus lateralis, VL; medialis, VM; intermedius; rectus femoris) was determined. The Q-angle was measured during quiet bilateral standing with hand support as needed. Percent volume of VM to the total quadriceps femoris was greater in female rowers than male rowers and female controls, and that of VL was greater in male rowers than male controls. There were no correlations between Q-angle and percent muscle volume in any muscles regardless of rowing experience or sex. The current study revealed that well-trained rowers have sex-related quadriceps femoris muscularity but no significant correlations between percent muscle volume in any muscles and Q-angle. Our findings suggest that Q-angle is not a major determinant of the quadriceps femoris muscularity in either well-trained or untrained individuals.

    DOI

  • Angular momentum compensation in yaw direction using upper body based on human running

    Otani, T, Hashimoto, K, Miyamae, S, Ueta, H, Sakaguchi, M, Kawakami, Y, Lim, H. O, Takanishi, A

    Proceedings - IEEE International Conference on Robotics and Automation     4768 - 4775  2017.07  [Refereed]

     View Summary

    © 2017 IEEE. Humans utilize their torsos and arms while running to compensate for the angular momentum generated by the lower-body movement during the flight phase. To enable this capability in a humanoid robot, the robot should have human-like mass, a center of mass position, and inertial moment of each link. To mimic this characteristic, we developed an angular momentum control method using a humanoid upper body based on human motion. In this method, the angular momentum generated by the movement of the humanoid lower body is calculated, and the torso and arm motions are calculated to compensate for the angular momentum of the lower body. We additionally developed the humanoid upper-body mechanism that mimics the human link length and mass property by using carbon fiber reinforced plastic and a symmetric structure. As a result, the developed humanoid robot could generate almost the same angular momentum as that of human through human-like running motion. Furthermore, when suspended in midair, the humanoid robot produced the angular momentum compensation in the yaw direction.

    DOI

  • Tissue elasticity of in vivo skeletal muscles measured in the transverse and longitudinal planes using shear wave elastography

    Chino, K, Kawakami, Y, Takahashi, H

    Clin. Physiol. Funct. Imaging   37 ( 4 ) 394 - 399  2017.07  [Refereed]

     View Summary

    The aim of the present study was to measure in vivo skeletal muscle elasticity in the transverse and longitudinal planes using shear wave elastography and then to compare the image stability, measurement values and measurement repeatability between these imaging planes. Thirty-one healthy males participated in this study. Tissue elasticity (shear wave velocity) of the medial gastrocnemius, rectus femoris, biceps brachii and rectus abdominis was measured in both the transverse and longitudinal planes using shear wave elastography. Image stability was evaluated by the standard deviation of the colour distribution in the shear wave elastography image. Measurement repeatability was assessed by the coefficient of variance obtained from three measurement values. Image stability of all tested muscles was significantly higher in the longitudinal plane (P&lt;0.001), but measurement repeatability did not differ significantly between the imaging planes (P&gt;0.05), except in the biceps brachii (P = 0.001). Measurement values of the medial gastrocnemius, rectus femoris and biceps brachii were significantly different between the imaging planes (P&lt;0.001). Image stability and measurement values of shear wave elastography images varied with imaging plane, which indicates that imaging plane should be considered when measuring skeletal muscle tissue elasticity by shear wave elastography.

    DOI

  • Localization of damage in the human leg muscles induced by downhill running

    Maeo, S, Ando, Y, Kanehisa, H, Kawakami, Y

    Sci. Rep.   7   5769  2017.07  [Refereed]

     View Summary

    We investigated localization of damage within the knee extensors (KEs) and plantar flexors (PFs) induced by downhill running (DR) by using transverse relaxation time (T-2)-weighted magnetic resonance imaging (MRI). Fourteen young adults performed 45-min DR (-15% slope) at their maximal tolerable velocity. At pre- and 24, 48, and 72 h post-exercise, T-2-MRI was scanned and T2 values for each muscle composing KEs and PFs at proximal, middle, and distal sites were calculated. Maximal isometric torque and rate of torque development (RTD: 0-30, 0-50, 0-100, 0-200 ms) were also measured. Maximal torque significantly decreased in KEs (14-17%) and PFs (6-8%) at 24-48 h post-exercise, with greater reductions for KEs. RTD in all phases, except for 0-200 ms in PFs, significantly decreased in KEs (11-42%) and PFs (13-23%) at least at one time point post-exercise. T2 significantly increased at several sites (3-5%) in both muscle groups at 24 and/or 48 h post-exercise. Among the T-2-increased sites, the peak effect size (Cohen's d) regarding T-2 change was pronounced at proximal (1.05) and middle (1.64) vastus intermedius compared to the other sites (0.72-0.77). These results suggest that DR induces damage in both KEs and PFs, and especially affects proximal-middle sites of the vastus intermedius.

    DOI

  • Detection of titin fragments in urine in response to exercise-induced muscle damage

    Kanda, K, Sakuma, J, Akimoto, T, Kawakami, Y, Suzuki, K

    PLoS One   12 ( 7 ) e0181623  2017.07  [Refereed]

     View Summary

    Many studies have attempted to determine the associations between blood biomarkers and exercise-induced muscle damage. However, poor correlations between the changes in biomarker levels and the magnitude of muscle symptoms have been reported. Recent advances in proteomic tools offer a strategy for the comprehensive analysis of protein expression, which can be used to identify biomarkers. Here, we used a proteomic analysis to identify urinary proteins that appear in response to a calf-raise exercise, including repetitive eccentric muscle contractions, and found that a titin (also known as connectin) N-terminal fragment molecule appears in the urine after eccentric exercise. We measured the titin fragment in urine samples from nine individuals before and after eccentric exercise using a newly-established enzyme-linked immunosorbent assay and found that the titin fragment excretion rate increased 96 h after the exercise (5.1 to 77.6 pg/min, p &lt; 0.01). The changes in the titin fragment excretion rate were correlated strongly with blood markers of muscle damage and with muscle symptoms. These findings suggest that the urinary titin fragment is potentially a noninvasive biomarker of muscle damage.

    DOI

  • Body mass-to-waist ratio strongly correlates with skeletal muscle volume in children

    Ohta, M, Midorikawa, T, Hikihara, Y, Sakamoto, S, Kawakami, Y, Fukunaga, T, Kanehisa, H

    PLoS One   12 ( 5 ) e0177155  2017.05  [Refereed]

     View Summary

    Purpose
    We hypothesized that body mass-to-waist ratio is strongly associated with the total-body skeletal muscle volume (SMV) in children. The purpose of the present study was to examine this hypothesis.
    Methods
    By using magnetic resonance imaging, total-body SMV (SMVMRI) was determined in 70 boys and 53 girls aged 6 to 12 years. Waist was measured at each of the level of umbilicus (Wumb) and the minimum circumference (Wmin), and the ratio of body mass to each of the two measured values was calculated (BM/Wumb and BM/Wmin, respectively). A single regression analysis was used to examine the relationships between SMVMRI and either BM/Wumb or BM/Wmin. On the basis of the obtained regression equations, SMVMRI was estimated and referred to as SMVBM/Wumb or SMVBM/Wmin.
    Results
    In both boys and girls, SMVMRI was highly correlated to BM/Wumb (r = 0.937 for boys and r = 0.939 for girls, P &lt; 0.0001) and BM/Wmin (r = 0.915 and 0.942, P &lt; 0.0001). R-2 and the standard error of estimate for SMVBM/Wumb were 0.878 and 706.2 cm(3), respectively, in boys and 0.882 and 825.3 cm(3), respectively, in girls, and those for SMVBM/Wmin were 0.837 and 814.0 cm(3), respectively, in boys and 0.888 and 804.1 cm(3), respectively, in girls. In both boys and girls, there were no significant differences between SMVMRI and either SMVBM/Wumb or SMVBM/Wmin, without systematic errors in Band-Altman plots. There was no significant effect of model on the absolute values of the residuals in both boys and girls.
    Conclusion
    The current results indicate that body mass-to-waist ratio can be a convenient outcome measure for assessing the total-body skeletal muscle volume in children.

    DOI

  • 大腿四頭筋の伸張性運動で生じる筋損傷の好発部位とその課題依存性

    前大純朗, 齋藤輝, 大塚俊, 単西瑶, 金久博昭, 川上泰雄

    J. Train. Sci. Exerc. Sport.   28 ( 3 ) 80 - 80  2017.04

    J-GLOBAL

  • Validity of segmental bioelectrical impedance analysis for estimating fat-free mass in children including overweight individuals

    Ohta, M, Midorikawa, T, Hikihara, Y, Masuo, Y, Sakamoto, S, Torii, S, Kawakami, Y, Fukunaga, T, Kanehisa, H

    Appl. Physiol. Nutr. Metabol.   42 ( 2 ) 157 - 165  2017.02  [Refereed]

     View Summary

    This study examined the validity of segmental bioelectrical impedance (BI) analysis for predicting the fat-free masses (FFMs) of whole-body and body segments in children including overweight individuals. The FFM and impedance (Z) values of arms, trunk, legs, and whole body were determined using a dual-energy X-ray absorptiometry and segmental BI analyses, respectively, in 149 boys and girls aged 6 to 12 years, who were divided into model-development (n = 74), cross-validation (n = 35), and overweight (n = 40) groups. Simple regression analysis was applied to (length)(2)/Z (BI index) for each of the whole-body and 3 segments to develop the prediction equations of the measured FFM of the related body part. In the model-development group, the BI index of each of the 3 segments and whole body was significantly correlated to the measured FFM (R-2 = 0.867-0.932, standard error of estimation = 0.18-1.44 kg (5.9%-8.7%)). There was no significant difference between the measured and predicted FFM values without systematic error. The application of each equation derived in the model-development group to the crossvalidation and overweight groups did not produce significant differences between the measured and predicted FFM values and systematic errors, with an exception that the arm FFM in the overweight group was overestimated. Segmental bioelectrical impedance analysis is useful for predicting the FFM of each of whole-body and body segments in children including overweight individuals, although the application for estimating arm FFM in overweight individuals requires a certain modification.

    DOI

  • 骨盤運動に着目した2足走行ロボットの開発(第16報:広範囲剛性関節機構のための台形CFRP重ね板ばね)

    赤堀孝太, 大谷拓也, 橋本健二, 橋本健二, 礒道貴矢, 夏原彬, 植田大貴, 尾原睦月, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   35th  2017

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第17報:低速走行から高速走行への遷移に対応した広範囲剛性可変機構)

    尾原睦月, 大谷拓也, 橋本健二, 橋本健二, 礒道貴矢, 夏原彬, 植田大貴, 赤堀孝太, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   35th  2017

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第19報:CFRP重ね板ばねによる弾性関節機構の小型化)

    夏原彬, ZHANG Chunyu, 大谷拓也, 橋本健二, 阪口正律, 川上泰雄, LIM Hun-ok, 高西淳夫

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM)   18th  2017

    J-GLOBAL

  • 04生−10−口−15 器具を用いた軟組織モビライゼーションが足関節柔軟性および筋スティフネスに与える影響

    池田尚樹, 大塚俊, 川西陽三, 川上泰雄

    日本体育学会大会予稿集   68 ( 0 ) 132_3 - 132_3  2017

    Authorship:Corresponding author

     View Summary

    <p>【目的】下腿後面への器具を用いた軟組織モビライゼーション(IASTM)が足関節柔軟性および筋スティフネスに与える影響を検証した。【方法】健常な成人14名(男性11名・女性3名、24.3±3.5歳)にIASTM条件と安静(CON)条件をそれぞれ別日に実施した。IASTMは下腿後面の軟部組織(腓腹筋内側頭・外側頭、ヒラメ筋、後脛骨筋などの骨格筋、筋膜、アキレス腱などの腱組織の皮膚上からの機械的刺激)を対象に5分間実施した。IASTMとCONの前後で、足関節受動背屈可動域、足関節スティフネス、腓腹筋内側頭およびヒラメ筋の筋腹部分のスティフネス(超音波エラストグラフィ)を測定した。【結果】足関節受動背屈可動域はIASTM後に有意に増加(p<0.05)、足関節スティフネスはIASTM後に有意に低下した(p<0.05)。腓腹筋内側頭およびヒラメ筋の筋スティフネスは変化しなかった。CON後ではすべての測定項目が変化しなかった。【結論】IASTMは下腿三頭筋の筋腹以外の軟組織のスティフネス低下を通じて足関節可動性を向上させる。IASTMは足部柔軟性確保のコンディショニング手法として有効である。</p>

    DOI CiNii J-GLOBAL

  • 事前の股関節屈曲筋力発揮が低強度・長時間の等尺性膝関節伸展時の大腿四頭筋の活動交替様相に与える影響

    齋藤輝, 飯泉拳, 川上泰雄

    トレーニング科学   28 ( 4 ) 205 - 213  2017  [Refereed]

    J-GLOBAL

  • Plyometric training favors optimizing muscle-tendon behavior during depth jumping

    Hirayama, K, Iwanuma, S, Ikeda, N, Yoshikawa, A, Ema, R, Kawakami, Y

    Front. Physiol.   8   16  2017.01  [Refereed]

     View Summary

    The purpose of the present study was to elucidate how plyometric training improves stretchshortening cycle (SSC) exercise performance in terms of muscle strength, tendon stiffness, and muscletendon behavior during SSC exercise. Eleven men were assigned to a training group and ten to a control group. Subjects in the training group performed depth jumps (DJ) using only the ankle joint for 12 weeks. Before and after the period, we observed reaction forces at foot, muscletendon behavior of the gastrocnemius, and electromyographic activities of the triceps surae and tibialis anterior during DJ. Maximal static plantar flexion strength and Achilles tendon stiffness were also determined. In the training group, maximal strength remained unchanged while tendon stiffness increased. The force impulse of DJ increased, with a shorter contact time and larger reaction force over the latter half of braking and initial half of propulsion phases. In the latter half of braking phase, the average electromyographic activity (mEMG) increased in the triceps surae and decreased in tibialis anterior, while fascicle behavior of the gastrocnemius remained unchanged. In the initial half of propulsion, mEMG of triceps surae and shortening velocity of gastrocnemius fascicle decreased, while shortening velocity of the tendon increased. These results suggest that the following mechanisms play an important role in improving SSC exercise performance through plyometric training: (1) optimization of muscletendon behavior of the agonists, associated with alteration in the neuromuscular activity during SSC exercise and increase in tendon stiffness and (2) decrease in the neuromuscular activity of antagonists during a counter movement.

    DOI

  • Validity of muscle thickness-based prediction equation for quadriceps femoris volume in middle-aged and older men and women.

    Nakatani, M, Takai, Y, Akagi, R, Wakahara, T, Sugisaki, N, Ohta, M, Kawakami, Y, Fukunaga, T, Kanehisa, H

    Eur. J. Appl. Physiol.   116 ( 11-12 ) 2125 - 2133  2016.12  [Refereed]  [International journal]

     View Summary

    BACKGROUND: This study examined the validity of muscle thickness (MT)-based prediction equation for the muscle volume of the quadriceps femoris (QFMV) by evaluating the applicability of a prediction equation previously derived from young men and by developing a new prediction equation in middle-aged and older individuals. METHODS: The MT at the midpoint of the thigh anterior and QFMV were determined using ultrasonography and magnetic resonance imaging in 30 men and 30 women aged 51 to 77 years. First, we examined the validity of the MT-based prediction equation previously developed for young men to estimate the QFMV of middle-aged and older individuals. Second, we allocated the subjects to validation or cross-validation group and developed a prediction equation for estimating the QFMV using a stepwise multiple regression analysis. RESULTS: The published equation generated a small but a significant difference between the measured and estimated QFMV, with a systematic error depending on the size of QFMV. A multiple regression analysis for the validation group produced the following equation: QFMV (cm3) = (sex × 267.7) + (MT × 249.3) + (thigh length × 41.1) - 1663.7 (sex: man = 1, woman = 0). R 2 and SEE of the regression equation were 0.888 and 124.4 cm3 (12.0 %), respectively. The developed equation was validated and cross-validated. CONCLUSION: For middle-aged and older individuals, the prediction equation previously derived from young men is not applicable, and the newly developed prediction equation with sex, MT, and thigh length as independent variables is applicable for estimating QFMV.

    PubMed

  • Unique muscularity in cyclists' thigh and trunk: A cross-sectional and longitudinal study

    Ema, R, Wakahara, T, Yanaka, T, Kanehisa, H, Kawakami, Y

    Scand. J. Med. Sci. Sports   26 ( 7 ) 782 - 793  2016.07  [Refereed]

    Authorship:Corresponding author

     View Summary

    This study examined the influence of regular training in competitive cycling on individual muscle volume of the thigh and psoas major cross-sectionally and longitudinally. T1-weighted magnetic resonance (MR) images of the trunk and right thigh were obtained from eight experienced varsity male cyclists (experience: &gt;4 years) and 10 untrained men (experiment 1), and from 12 (10 males, two females) varsity cyclists before and after competitive cycling training for 6 months (experiment 2). From the MR images, the volumes of each of the quadriceps femoris and hamstrings, total adductors, gracilis, sartorius, and psoas major were determined. The volumes of the monoarticular thigh muscles, semitendinosus, and psoas major muscles were significantly greater in the experienced cyclists than in the untrained men (experiment 1), and increased significantly after the competitive training for 6 months (experiment 2). In contrast, the volumes of the other biarticular thigh muscles were similar among the experienced cyclists and untrained men (experiment 1), and did not change by competitive cycling training (experiment 2). The results indicate that competitive cycling training induces muscle-specific hypertrophy of the synergistic muscles, especially between the monoarticular and biarticular muscles, leading to quantitative profiles of the musculature in experienced cyclists.

    DOI

  • Possible Factors Related to Lack of Hypertrophy of the Biarticular Muscles Induced by Multi-joint Training: Its Relation to Changes in Muscle Activation During the Training

    江間諒一, 稲見崇孝, 川上泰雄

    デサントスポーツ科学   37   138 - 146  2016.06

    J-GLOBAL

  • Anatomical cross-sectional area of the quadriceps femoris and sit-to-stand test score in middle-aged and elderly population: development of a predictive equation

    Saito, A, Ema, R, Inami, T, Maeo, S, Otsuka, S, Higuchi, M, Shibata, S, Kawakami, Y

    J. Physiol. Anthropol.   36 ( 3 )  2016.06  [Refereed]

     View Summary

    Background: Although the sit-to-stand (STS) test score has been shown to relate to the strength and size of the quadriceps femoris (QF) for elderly population, it is unknown whether this relationship is influenced by a posture (i.e., the trunk being allowed to stoop or not) during the STS test. The present study investigated the relationship between STS test score and QF anatomical cross-sectional area (ACSA) in the middle-aged and elderly population with regard to the difference in the posture during STS test, and aimed to develop an accurate predicting equation of the QF ACSA from the STS test score.
    Methods: 105 males (40-81 years) and 113 females (41-79 years) participated in the present study, then the subjects were divided at random as validation and cross-validation groups. Mid-thigh QF ACSA was determined by magnetic resonance imaging. Subjects performed a 10-repeated STS as fast as possible in two conditions: (1) with the trunk being allowed to stoop during the sitting phases, and (2) kept upright throughout the test. A power index of the STS test score was calculated based on an equation obtained in a previous study using the time taken for each test condition, the thigh and shank lengths, and body mass. In the validation group (n = 109), a stepwise multiple linear regression analysis was performed to create a predictive model of the ACSA with sex, age, the STS time, and power for both conditions as independent variables. The formulated predictive equation was examined in the cross-validation group (n = 109).
    Results: In the validation group, a stepwise regression analysis revealed that STS power with upright trunk condition, sex, and age but not with the stooping condition, were selected as variables to predict QF ACSA (R-2 = 0.64, P &lt; 0.001). There was no systematic error for the relationship between predicted and measured values in the cross-validation group.
    Conclusions: These results indicate that STS test score with upright trunk condition is one of the indices of QF muscle size of the middle-aged and elderly population. The estimated predicting equation should be useful in clinical and practical settings for the health promotion.

    DOI

  • Unique activation of the quadriceps femoris during single- and multi-joint exercises

    Ema, R, Sakaguchi, M, Akagi, R, Kawakami, Y

    Eur. J. Appl. Physiol.   116 ( 5 ) 1031 - 1041  2016.05  [Refereed]

     View Summary

    This study aimed to examine whether muscle activation of the quadriceps femoris differs between single- and multi-joint exercises, and to explore the factors resulting in muscle and exercise specificity in activation.
    Eleven adults developed isometric hip extension torque gradually while maintaining submaximal isometric knee extension torque (Experiment 1). In Experiment 2, 15 men performed knee extension and leg press separately at intensities of 20, 40, 60 and 80 % of their one repetition maximum (1RM) load, and 14 men conducted leg press at intensities of 40 and 80 % of 1RM until exhaustion (Experiment 3). Muscle activation during exercises was measured using surface electromyography from the rectus femoris, vastus lateralis and medialis.
    The addition of isometric hip extension torque significantly decreased rectus femoris activation (Experiment 1). In Experiment 2, the rectus femoris activation was significantly higher during knee extension than during leg press, whereas no differences were observed in the vasti. The rectus femoris activation was not significantly different between leg press at 80 % and knee extension at 20 % of 1RM. The results of Experiment 3 showed significant increases in vasti activation at both intensities, whereas rectus femoris activation did not change at 80 % of 1RM.
    The results revealed that even at high intensity, the rectus femoris activation during multi-joint exercise is low and does not increase with fatigue, unlike the vasti, and that the inter-muscle and inter-exercise differences in activation depend on whether hip extension torque is exerted in the exercise.

    DOI

  • Joint Mechanism Coping with Both of Active Pushing-off and Joint Stiffness Based on Human

    Otani, T, Hashimoto, K, Isomichi, T, Miyamae, S, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    CISM International Centre for Mechanical Sciences, Courses and Lectures   569   243 - 250  2016

     View Summary

    Human steady running is modeled using a spring-loaded inverted pendulum (SLIP). However, human pushes off the ground actively when starting to run. In this study, we describe a knee joint mechanism for coping with both of an active pushing-off and joint stiffness needed to continue running. To achieve this, knee is equipped with a mechanism comprising a worm gear that improves torque transmission efficiency in order to achieve active movement and two laminated leaf springs for mimicking joint stiffness. We evaluated the performance of the laminated leaf spring and performed an experiment in which the developed running robot started to run. Using the proposed mechanisms, this robot could accomplish hopping with an active pushing-off motion and continued to run using its joint elasticity.

    DOI

  • 骨盤運動に着目した2足走行ロボットの開発(第14報:弾性要素を有し能動動作と路面への倣い動作が可能な足関節・足部機構)

    夏原彬, 大谷拓也, 橋本健二, 橋本健二, 宮前俊介, 礒道貴矢, 植田大貴, 赤堀孝太, 尾原睦月, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   34th  2016

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第13報:人間と同等の角運動量が発生可能で人間の質量特性を模擬した上半身機構)

    植田大貴, 大谷拓也, 橋本健二, 橋本健二, 宮前俊介, 礒道貴矢, 夏原彬, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   34th  2016

    J-GLOBAL

  • ヒューマノイドロボットによる人間の走行模擬のための足関節に着目した人体運動解析

    大谷拓也, 夏原彬, 橋本健二, 橋本健二, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   34th  2016

    J-GLOBAL

  • ヒト走行時の骨盤運動解析に基づくヒューマノイドによる跳躍運動

    大谷拓也, 橋本健二, 阪口正律, 川上泰雄, LIM Hun-ok, 高西淳夫

    LIFE講演概要集(CD-ROM)   2016  2016

    J-GLOBAL

  • ひずみエラストグラフィによる筋硬度と筋損傷指標との関係

    米津貴久, 小野高志, 稲見崇孝, 川上泰雄, 広瀬統一, 福林徹

    トレーニング科学   27 ( 4 ) 101 - 109  2016  [Refereed]

    J-GLOBAL

  • 静的ストレッチングとランニングを組み合わせたウォームアップが跳躍能力に及ぼす影響

    池田尚樹, 稲見崇孝, 川上泰雄

    トレーニング科学   27 ( 4 ) 123 - 132  2016  [Refereed]

    J-GLOBAL

  • Joint mechanism that mimics elastic characteristics in human running

    Otani, T, Hashimoto, K, Isomichi, T, Sakaguchi, M, Kawakami, Y, Lim., H-O, Takanishi, A

    Machines   4 ( 1 ) 5  2016  [Refereed]

    DOI

  • Assessment of individual muscle hardness and stiffness using ultrasound elastography

    Inami, T, Kawakami, Y

    J. Phys. Fit. Sports Med.   5   313 - 317  2016  [Refereed]

  • Training-induced changes in architecture of human skeletal muscles: current evidence and unresolved issues

    Ema, R, Akagi, R, Wakahara, T, Kawakami, Y

    J. Phys. Fit. Sports Med.   5   37 - 46  2016  [Refereed]

  • Applicability of anthropometric measures for estimating whole-body skeletal muscle volume in prepubertal children

    Megumi Ohta, Taishi Midorikawa, Yuki Hikihara, Shizuo Sakamotro, Yasuo Kawakami, Hiroaki Kanehisa, Tetsuo Fukunaga

    EUROPEAN JOURNAL OF CLINICAL NUTRITION   69   S23 - S24  2015.12

  • Utilization of human-like pelvic rotation for running robot

    Otani, T, Hashimoto, K, Yahara, M, Miyamae, S, Isomichi, T, Hanawa, S, Sakaguchi, M, Kawakami, Y, Lim, H, Takanishi, A

    Front. Robot. AI   2 ( 17 )  2015.07  [Refereed]

  • Effect of exercise-induced muscle damage on muscle hardness evaluated by ultrasound real-time tissue elastography

    Yanagisawa, O, Sakuma, J, Kawakami, Y, Suzuki, K, Fukubayashi, T

    SpringerPlus   4   308  2015.07  [Refereed]

     View Summary

    Purpose: To assess the effect of exercise-induced muscle damage on muscle hardness and evaluate the relationship between muscle hardness and muscle damage indicators.
    Methods: Seven men (mean 25.3 years; 172.7 cm; 66.8 kg) performed the single-leg ankle plantar flexion exercise involving both concentric and eccentric contractions (10 sets of 40 repetitions). The hardness of the medial gastrocnemius (MG) was evaluated using ultrasound real-time tissue elastography before, from day 1 to 4, and day 7 after exercise. The strain ratio between the MG and a reference material was calculated. Simultaneously, we evaluated the magnetic resonance T2 value (an index of edema) of the triceps surae, the ankle dorsiflexion range of motion (ROM), and calf muscle soreness. Serum creatine kinase activity was assessed before, 2 and 4 h, and from day 1 to 4 after exercise.
    Results: The MG showed lower strain ratio, indicating increased muscle hardness, on day 4 post-exercise (P &lt; 0.01) and higher T2 values on days 1-7 post-exercise (P &lt; 0.01) relative to each pre-exercise value. The ankle dorsiflexion ROM was lower on days 2-4 post-exercise (P &lt; 0.01). The serum creatine kinase markedly increased on days 3 and 4 post-exercise (not significant). The degree of muscle soreness among the post-exercise time points was similar. The decreased strain ratio did not correlate with the increased T2, the decreased joint ROM or muscle soreness.
    Conclusion: Muscle hardness increased after strenuous resistance exercise, but the change was not related with muscle edema, decreased joint ROM, or muscle soreness resulting from muscle damage.

    DOI

  • 筋の硬さとストレッチング (特集 ストレッチングの効果を考える)

    稲見 崇孝, 川上 泰雄

    体育の科学   65 ( 6 ) 407 - 412  2015.06

    CiNii J-GLOBAL

  • Determination of contraction-induced changes in elbow flexor cross-sectional area for evaluating muscle size-strength relationship during contraction

    Akagi, R, Iwanuma S, Hashizume, S, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Strength Cond. Res.   29 ( 6 ) 1741 - 1747  2015.06  [Refereed]

     View Summary

    The aims of this study were to determine contraction-induced changes in the elbow flexor cross-sectional area (CSA) and to examine whether the maximal CSA during a high-intensity contraction is more closely related to the strength than that at rest in the elbow flexors. Fourteen young male subjects participated in this study. The elbow flexor CSAs were measured at sites from 1 cm proximal to 6 cm distal to the reference site (60% of the upper arm length from the acromial process of the scapula to the lateral epicondyle of the humerus) (every 1 cm; 8 sampling sites) using magnetic resonance imaging, at rest and during 10, 20, 40, 60, and 80% of maximal voluntary contraction (MVC) of isometric elbow flexion. The elbow flexor CSA changed greatly during low-intensity contractions, and this contraction-induced change was small over 60% MVC. Compared with at rest, greater CSA around the muscle belly and smaller CSA in the distal portion of the elbow flexors were found in contracted conditions. The MVC strength was significantly correlated with the maximal CSAs at rest and each contraction level, but stepwise multiple regression analysis selected only that during 80% MVC as a significant contributor for estimating the MVC strength. These results suggest that, in the elbow flexors, the contraction-induced change in the CSA reaches its peak under high contractile level and that the maximal CSA during 80% MVC is more closely related to the MVC strength than that at rest.

  • Influence of muscle hypertrophy on the moment arm of the triceps brachii muscle.

    Sugisaki, N, Wakahara, T, Murata, K, Miyamoto, N, Kawakami, Y, Kanehisa, H, Fukunaga, T

    J. Appl. Biomech.   31 ( 2 ) 111 - 116  2015.04  [Refereed]

     View Summary

    Although the moment arm of the triceps brachii muscle has been shown to be associated with the muscle's anatomical cross-sectional area, whether training-induced muscle hypertrophy alters the moment arm of the muscle remains unexplored. Therefore, the current study aimed to examine this. Eleven men underwent a 12-week resistance training program for the triceps brachii muscle. The maximum muscle anatomical cross-sectional area (ACSA(max)), the moment arm of the triceps brachii muscle, and the anterior-posterior dimension of the olecranon were measured using a magnetic resonance imaging system before and after intervention. The ACSA(max) (33.6 +/- 11.9%, P &lt; .001) and moment arm (5.5 +/- 4.0%, P = .001) significantly increased after training, whereas the anterior-posterior dimension of the olecranon did not change (P&gt;.05). The change in moment arm was smaller than that expected from the relationship between the ACSAmax and the moment arm before the intervention. The present results indicate that training-induced triceps brachii muscle hypertrophy could increase the muscle moment arm, but its impact can be small or negligible.

    DOI

  • No graduated pressure profile in compression stockings still reduces muscle fatigue

    Miyamoto, N, Kawakami, Y

    Int. J. Sports Med.   36 ( 3 ) 220 - 225  2015.03  [Refereed]

     View Summary

    Most sporting compression stockings possess a graduated pressure profile. However, it remains unclear whether the graduated pressure profile is an essential feature for reducing the development of muscle fatigue. This study sought to examine the effect of the pressure profile of compression stockings on the degree of muscle fatigue of lower leg muscles induced by submaximal running exercise. 15 male subjects performed 30-min treadmill running in 1 control and 4 compression stocking conditions with the following profiles; 1) graduated low pressure, 2) graduated high pressure, 3) uniform pressure distribution, and 4) localized pressure just over the gastrocnemius muscle belly. Before and immediately after the exercise, T2-weighted magnetic resonance images of the right lower leg were obtained without testing garments. T2 values of the triceps surae and tibialis anterior were calculated from the images. T2 was significantly increased after the running in all conditions. The magnitude of T2 increase was significantly greater in the control than in other 3 conditions except for the one with graduated low pressure, whereas there were no significant differences among the latter 3 conditions. The findings suggest that a graduated pressure profile is not an essential feature of compression stockings for reducing the development of muscle fatigue during submaximal running exercise.

    DOI

  • Hip rotation angle is associated with frontal plane knee joint mechanics during running

    Sakaguchi, M, Shimizu, N, Yanai, T, Stefanyshyn, D, J, Kawakami, Y

    Gait & Posture   41 ( 2 ) 557 - 561  2015.02  [Refereed]

    Authorship:Corresponding author

     View Summary

    Inability to control lower extremity segments in the frontal and transverse planes resulting in large knee abduction angle and increased internal knee abduction impulse has been associated with patellofemoral pain (PFP). However, the influence of hip rotation angles on frontal plane knee joint kinematics and kinetics remains unclear. The purpose of this study was to explore how hip rotation angles are related to frontal plane knee joint kinematics and kinetics during running. Seventy runners participated in this study. Three-dimensional marker positions and ground reaction forces were recorded with an 8-camera motion analysis system and a force plate while subjects ran along a 25-m runway at a speed of 4 m/s. Knee abduction, hip rotation and toe-out angles, frontal plane lever arm at the knee, internal knee abduction moment and impulse, ground reaction forces and the medio-lateral distance from the ankle joint center to the center of pressure (AJC-CoP) were quantified. The findings of this study indicate that greater hip external rotation angles were associated with greater toe-out angles, longer AJC-CoP distances, smaller internal knee abduction impulses with shorter frontal plane lever arms and greater knee abduction angles. Thus, there appears to exist a conflict between kinematic and kinetic risk factors of PFP, and hip external rotation angle may be a key factor to control frontal plane knee joint kinematics and kinetics. These results may help provide an appropriate manipulation and/or intervention on running style to reduce the risk of PFP. (C) 2014 Elsevier B.V. All rights reserved.

    DOI

  • 骨盤運動に着目した2足走行ロボットの開発(第10報:弾性要素と能動的な蹴り出しから跳躍力を獲得できる膝関節機構)

    礒道貴矢, 大谷拓也, 橋本健二, 橋本健二, 八原昌亨, 宮前俊介, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   33rd  2015

    J-GLOBAL

  • Quantitative profiles of the quadriceps femoris in sport athletes

    Ema, R, Kawakami, Y

    Sports Perf.     175 - 185  2015.01  [Refereed]

    Authorship:Corresponding author

     View Summary

    This brief review summarizes available evidence on the quantitative profiles of the quadriceps femoris in sports athletes. It is generally believed that sports athletes show event-related morphological profiles in muscle size that are specific to their competitive and training activities. Many previous analyses of cross-sectional data have indicated that athletes have greater size of the quadriceps femoris as comparedto untrained controls. However, little is known about which events have athletes with the greatest degree of quadriceps femoris. In addition, longitudinal studies on the adaptation of the quadriceps are few, and there is a paucity of quantitative evidence onadaptations of the quadriceps femoris induced by regular training for competitive activities. Only a limited number of studies have been carried out to examine the association between quadriceps femoris size and sport performance, e.g., sprinters, weightlifters and cyclists, with the conclusions controversial and inconsistent across studies. Furthermore, little is known regarding inter-muscle and/or intra-muscle differences inthe hypertrophic response, either in cross-sectional or longitudinal studies. There ishowever strong evidence that resistance training-induced changes in muscle size do notoccur evenly among the four muscles of the quadriceps femoris, nor along or across thesame muscle. Further studies will be needed if we are to develop an understanding of the mechanisms leading to the many differences seen in the quadriceps femoris, both within and across athletes.

    DOI

  • 個人のアキレス腱形状と筋力データを用いた有限要素シミュレーションによる運動時のアキレス腱局所変形の推定

    久野峻幸, 楠本一樹, 栗原俊之, 石川昌紀, 川上泰雄, 小田俊明

    バイオメカニクス研究   19 ( 1 ) 2 - 10  2015  [Refereed]

    J-GLOBAL

  • 地域性を考慮した体操の実施が中高齢女性の筋量および身体機能に及ぼす効果

    江間諒一, 加藤えみか, 川上泰雄

    トレーニング科学   26   197 - 209  2015  [Refereed]

  • Inter-and intra-muscular differences in training-induced hypertrophy of the quadriceps femoris: Association with muscle activation during the first training session

    Wakahara, T, Ema, R, Miyamoto, N, Kawakami, Y

    Clin. Physiol. Funct. Imaging    2015  [Refereed]

    DOI

  • Technical principles of Atemi-waza in the first technique of the Itsutsu-no-kata in Judo: from a viewpoint of Jujitsu-like Atemi-waza

    Shishida, F, Sakaguchi, M, Sato, T, Kawakami, Y

    Sport Sci. Res.   12   121 - 136  2015  [Refereed]

    Authorship:Corresponding author

  • Knee joint mechanism that mimics elastic characteristics and bending in human running

    Otani, T, Hashimoto, K, Hamamoto, S, Miyamae, S, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    2015 IEEE/RSJ International Conforence on Intelligent Robots and Systems   September 28-October 2   5156 - 5161  2015  [Refereed]

     View Summary

    Analysis of human running has revealed that the motion of the human leg can be modeled by a compression spring because the leg's joints behave like a torsion spring in the stance phase. Moreover, the knee bends rapidly to avoid contact of the foot with the ground in the swing phase. In this paper, we describe the development of a knee joint mechanism that mimics the elastic characteristics of the stance leg and rapid bending knee of the idling leg of a running human. The knee was equipped with a mechanism comprising two leaf springs and a worm gear for adjusting the joint stiffness and high-speed bending knee. Using this mechanism, we were able to achieve joint stiffness within the range of human knee joints that could be adjusted by varying the effective length of one of the leaf springs. In addition, the mechanism was able to bend rapidly by changing the angle between the two leaf springs. The equation proposed for calculating the joint stiffness considers the difference between the position of the fixed point of the leaf spring and the position of the rotational center of the joint. We evaluated the performance of the adjustable joint stiffness and the effectiveness of the proposed equation for joint stiffness and high-speed knee bending. We were able to make a bipedal robot hop using pelvic oscillation for storing energy produced by the resonance to leg elasticity and confirmed the mechanism could produce large torque 210 Nm.

  • Running with lower-body robot that mimics joint stiffness of humans

    Otani, T, Hashimoto, K, Yahara, M, Miyamae, S, Isomichi, T, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    2015 IEEE/RSJ International Conference on Intelligent Robots and Systems   September 28-October 2   3969 - 3974  2015  [Refereed]

     View Summary

    Human running motion can be modeled using a spring-loaded inverted pendulum (SLIP), where the linear-spring-like motion of the standing leg is produced by the joint stiffness of the knee and ankle. To use running speed control in the SLIP model, we should only decide the landing placement of the leg. However, for using running speed control with a multi-joint leg, we should also decide the joint angle and joint stiffness of the standing leg because these affect the direction of the ground reaction force. In this study, we develop a running control method for a human-like multi-joint leg. To achieve a running motion, we developed a running control method including pelvis oscillation control for attaining jumping power with the joint stiffness of the leg and running speed control by changing the landing placement of the leg. For using running speed control, we estimated the ground reaction force using the equation of motion and detected the joint angles of the leg for directing the ground reaction force toward the center of mass. To evaluate the proposed control methods, we compared the estimated ground reaction force with the force measured by the real robot. Moreover, we performed a running experiment with the developed running robot. By using ground reaction force estimation, this robot could accomplish the running motion with pelvic oscillation for attaining jumping power and running speed control.

  • Kinematic differences between faster and slower sprinters during the acceleration phase of sprint running

    Kobayashi, K, Tsuchie, H, Kanehisa, H, Yanai, T, Kawakami, Y

    Gazz. Med. Ital. Arch. Sci. Med.   174 ( 4 ) 163 - 172  2015  [Refereed]

     View Summary

    Aim: The purpose of this study was to examine kinematic differences between faster and slower sprinters during the acceleration phase of sprint running. Methods: Nineteen collegiate sprinters were divided into FAST (N.=9) and SLOW (N.=10) groups, based on their best 100 m race times. A two-dimensional videographic technique was used to record the side views of 40 m sprint performances using four high-speed digital camcorders. Using the recorded images, kinematic variables such as contact time, flight time, horizontal velocity, and horizontal acceleration were determined from the 1 step to the 19 step. A two-way repeated measures ANOVA (two groups of 10 steps each) with a Tukey post-hoc test was used to analyze the obtained data. Results: From the 7 step to the 19 step, the horizontal velocity was significantly higher for the FAST group as compared with that for the SLOW group. The horizontal acceleration from the 1 step to the 19 step and the horizontal velocity from the 7 step to the 19 step were significantly greater for the FAST group as compared with those for the SLOW group. In addition, the ground contact time was significantly lower for the FAST group as compared with that for the SLOW group. Conclusion: The results indicate that faster sprinters can achieve greater horizontal acceleration with shorter ground contact during the initial as well as the latter stage of the acceleration phase, during which they are already running faster. st th th th st th th th

  • 中高齢者における大腿部中央の筋厚および筋断面積に基づく膝関節伸展筋群の筋体積推定

    中谷深友紀, 高井洋平, 赤木亮太, 若原卓, 杉崎範英, 太田めぐみ, 川上泰雄, 福永哲夫, 金久博昭

    日本トレーニング科学会大会プログラム・抄録集   27th   50  2014.11

    J-GLOBAL

  • Effect of pressure intensity of compression short-tight on fatigue of thigh muscles

    Miyamoto, N, Kawakami, Y

    Med. Sci. Sports Exerc.   46 ( 11 ) 2168 - 2174  2014.11  [Refereed]

     View Summary

    Purpose: Existing studies have failed to provide evidence of a positive effect on exercise performance by wearing compression short tights covering only both thighs. This could be due to an inadequate pressure intensity that otherwise has a significant effect if applied on the crucial point in the thigh. This study aimed to examine the effect of pressure intensity of elastic compression short-tights on the metabolic state of thigh muscles during submaximal running. Methods: Two groups of 11 male subjects performed treadmill running at 12 km.h(-1) in three conditions in each of experiment 1 (short-tights with a compression intensity at the thigh of 8 mm Hg (LOW) and 15 mm Hg (MID) and noncompression shorts as control (CON1)) and experiment 2 (short-tights with 20 mm Hg (MID-HIGH) and 25 mm Hg (HIGH) and CON2). Before and immediately after the running exercises, T2-weighted magnetic resonance images of the right thigh were obtained without testing garments. From the images, skeletal muscle proton transverse relaxation time (T2) of each muscle in the thigh was calculated. Results: T2 was significantly increased after the treadmill running in all conditions in the hamstring and adductor muscles. In experiment 1, after the running, T2 elevation was significantly smaller in MID than that in CON1 for the biceps femoris, semimembranosus, adductor longus, and adductor magnus muscles. In experiment 2, after the running, T2 elevation was significantly lower in MID-HIGH than that in CON2 and HIGH for the biceps femoris, semimembranosus, and adductor longus. Conclusions: The findings suggest that wearing compression short tights with a pressure intensity of 15-20 mm Hg at the thigh can reduce development of fatigue of exercising muscles during submaximal running exercise in healthy adult males.

    DOI

  • The contraction-induced increase in Achilles tendon moment arm: A three-dimensional study

    Hashizume, S, Iwanuma, S, Akagi, R, Kanehisa, H, Kawakami, Y, Yanai, T

    J. Biomech.   47 ( 12 ) 3226 - 3231  2014.09  [Refereed]

     View Summary

    The present study aimed to re-examine the influence of the isometric plantarflexors contraction on the Achilles tendon moment arm (ATMA) and the factors influencing the ATMA in three-dimensions. A series of coronal magnetic resonance images of the right ankle were recorded at foot positions of 10 degrees of dorsiflexion, neutral position, and 10 degrees of plantarflexion for the rest condition and the plantarflexors contraction condition at 30% maximal voluntary effort The shortest distance between the talocrural joint axis and the line of action of the Achilles tendon force projected to the orthogonal plane of the talocrural joint axis was determined as the ATMA. The ATMA determined in the contraction condition was significantly greater by 8 mm than that determined in the rest condition. The talocrural joint axis was displaced anteriorly by 3 mm and distally by 2 mm due to the muscle contraction. As the same time, the line of action of the Achilles tendon force was displaced posteriorly by 5 mm and medially by 2 mm. These linear displacements of the talocrural joint axis and the line of action of the Achilles tendon force accounted for the difference in the ATMAs between the two conditions by 35.9 and 62.4%, respectively. These angular displacements accounted for the total of 0.4% increase in the ATMA. These results confirm the previous findings reported in two-dimensional studies and found that the linear displacement of the line of action of the Achilles tendon force is the primary source of the contraction-induced increase in the ATIVIA. (C) 2014 Elsevier Ltd. All rights reserved.

    DOI

  • Influence of the intensity of squat exercises on the subsequent jump performance

    Fukutani, A, Takei, S, Hirata, K, Miyamoto, N, Kanehisa, H, Kawakami, Y

    J. Strength Cond. Res.   28 ( 8 ) 2236 - 2243  2014.08  [Refereed]

     View Summary

    Jump performance can be enhanced after performing squat exercises, and this is thought to be because of the phenomenon of postactivation potentiation (PAP). However, the influence of the intensity of squat exercises on jump performance enhancement and its association to PAP have not been elucidated. Thus, we examined the influence of the intensity of squat exercises on the subsequent jump performance and the magnitude of PAP. Eight weightlifters (age, 19.8 +/- 1.3 years; height, 1.67 +/- 0.07 m; body mass, 77.1 +/- 14.8 kg) were recruited as subjects. The intensity of squat exercises was set in 2 conditions: heavy condition (HC) (45% 1 repetition maximum [1RM] x 5 repetitions [reps], 60% 1RM x 5 reps, 75% 1RM x 3 reps, and 90% 1RM x 3 reps) and moderate condition (MC) (45% 1RM x 5 reps, 60% 1RM x 5 reps, and 75% 1RM x 3 reps). Before and after the squat exercises, the subjects performed countermovement jumps 3 times. In addition, a twitch contraction was concurrently elicited before and after the squat exercises. In both conditions, twitch torque and jump height recorded after the squat exercises increased significantly compared with those recorded beforehand. The extents of increase in both twitch torque and jump height were significantly larger in HC than in MC. We conclude therefore that a high-intensity squat exercise is better than a moderate-intensity squat exercise as a warm-up modality for enhancing subsequent jump performance.

    DOI

  • Effect of Compression of Muscle and Its Intensity on Force-generating Capacity of the Muscle

    宮本直和, 川上泰雄

    デサントスポーツ科学   35   31 - 36  2014.06

    CiNii J-GLOBAL

  • Applicability of ultrasound muscle thickness measurements for predicting fat-free mass in elderly population

    Takai, Y, Ohta, M, Akagi, R, Kato, E, Wakahara, T, Kawakami, Y, Fukunaga, T, Kanehisa, H

    J. Nutr. Health Aging.   18 ( 6 ) 579 - 585  2014.06  [Refereed]

     View Summary

    Objective: This study aimed to examine the applicability of ultrasound muscle thickness (MT) measurements for predicting whole body fat-free mass (FFM) in elderly individuals. Design and setting: Crosssectional study of 77 healthy elderly individuals. Methods: MTs at nine sites of the body and FFM were determined using B-mode ultrasound and dual-energy x-ray absorptiometry (DXA), respectively, in 44 women and 33 men aged 52 to 78 yrs. Stepwise multiple regression analysis produced two equations for predicting DXA-based FFM with sex (dummy: woman = 0 and man = 1) and either MTs at the anterior and posterior of thigh and lower leg (Eq1) or the product of MT and limb length (MTxLL) at thigh anterior and posterior, lower leg posterior, and upper arm anterior (Eq2) as independent variables. Results: The R2 and SEE for each of the two equations were 0.929 and 2.5 kg for Eq1 and 0.955 and 2.0 kg for Eq2. The estimated FFM from each of Eq1 (44.4 +/- 8.9 kg) and Eq2 (44.4 +/- 9.0 kg) did not significantly differ from that of the DXA-based FFM (44.4 +/- 9.2 kg), without systematic error. However, the absolute value of the difference between the DXA-based and estimated FFM was significantly greater with Eq1 (2.0 +/- 1.5 kg) than with Eq2 (1.5 +/- 1.3 kg). Conclusion: The current results indicate that ultrasound MT measurement is useful to predict FFM in the elderly, and its accuracy is improved by using the product of MT and limb length as an independent variable.

    DOI

  • Inferior muscularity of the rectus femoris to vasti in varsity oarsmen

    Ema, R, Wakahara, T, Kanehisa, H, Kawakami, Y

    Int. J. Sports Med.   35 ( 4 ) 293 - 297  2014.04  [Refereed]

    Authorship:Corresponding author

     View Summary

    The purpose of this study was to examine the morphological profiles of 4 constituents (vastus lateralis, vastus medialis, vastus intermedius and rectus femoris) of the quadriceps femoris in oarsmen through comparison with non-athletes. T1-weigheted magnetic resonance (MR) images of the thigh were obtained from 14 oarsmen and 19 non-athlete men. From the MR images, serial anatomical cross-sectional areas (ACSAs) and muscle volume of each muscle were determined. The muscle volume of the total quadriceps femoris, vastus lateralis, vastus medialis and vastus intermedius were significantly larger in the oarsmen than in the non-athlete men, whereas that of the rectus femoris was comparable for the 2 groups. The portion of the rectus femoris as a percentage of total quadriceps femoris volume was significantly higher in the non-athlete men than in the oarsmen, and vice versa for the vastus lateralis. The proximal-to-distal and middle-to-distal ACSA ratios in each muscle did not differ between the 2 groups. The present results indicate inferior muscular hypertrophy of the rectus femoris compared to the vasti in oarsmen, and that the vasti are equally hypertrophied along their lengths. This may be due to muscle-specific adaptation to the rowing exercise.

    DOI

  • Effect of conditioning contraction intensity on postactivation potentiation is muscle dependent

    Fukutani, A, Hirata, K, Miyamoto, N, Kanehisa, H, Yanai, T, Kawakami, Y

    J. Electromyogr. Kinesiol.   24 ( 2 ) 240 - 245  2014.04  [Refereed]

     View Summary

    We aimed to examine whether the influence of conditioning contraction intensity on the extent of post-activation potentiation (PAP) is muscle dependent. Eleven healthy males performed both thumb adduction and plantar flexion as a conditioning contraction. The conditioning contraction intensities were set at 20%, 40%, 60%, 80%, or 100% of the maximal voluntary isometric contraction (MVC).
    Before and after the conditioning contraction, twitch torque was measured for the respective joint to calculate the extent of PAP. In plantar flexion, the extent of PAP became significantly larger as the conditioning contraction intensity increased up to 80% MVC (p &lt; 0.05). In contrast, the extent of PAP in thumb adduction increased significantly only up to 60% MVC (p &lt; 0.05), but not at higher intensities.
    These results indicate that the influence of the conditioning contraction intensity on the extent of PAP is muscle dependent. Our results suggest that a conditioning contraction with submaximal intensity can sufficiently evoke sizable PAP in the muscle where most of muscle fibers are recruited at submaximal intensities, thereby attenuating muscle fatigue induced by the conditioning contraction. (C) 2014 Elsevier Ltd. All rights reserved.

    DOI

  • Regular training of competitive cycling induces muscle-specific adaptation of synergistic muscles

    Ema Ryoichi, Wakahara Taku, Kawakami Yasuo

      11   71 - 71  2014

    CiNii

  • 骨盤運動に着目した2足走行ロボットの開発(第8報:膝関節に能動屈伸機構と弾性要素を有する2足走行ロボット脚部)

    濱元伸也, 大谷拓也, 飯塚晃弘, 宮前俊介, 瓜生和寛, 八原昌亨, 橋本健二, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   32nd  2014

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第6報:走行運動を目指した腰部関節の強度強化)

    宮前俊介, 大谷拓也, 飯塚晃弘, 濱元伸也, 八原昌亨, 橋本健二, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   32nd  2014

    J-GLOBAL

  • Gender differences in hip and ankle joint kinematics on knee abduction during running

    Sakaguchi, M, Ogawa, H, Shimizu, N, Kanehisa, H, Yanai, T, Kawakami, Y

    Eur. J. Sport Sci.   14   S302 - S309  2014.01  [Refereed]

    Authorship:Corresponding author

     View Summary

    The knee is the most common site of running injuries, particularly prevalent in females. The purpose of this study was to clarify gender differences in the lower extremity kinematics during running, with a specific emphasis on the relationships between the distal and proximal factors and the knee joint kinematics. Eleven female and 11 male runners participated in this study. Three-dimensional marker positions were recorded with a motion analysis system while the subjects ran along a 25 m runway at a speed of 3.5 m/s. Kinematic variables were analyzed for the stance phase of the right leg. Female runners demonstrated significantly greater peak knee abduction (P&lt;0.05), hip adduction (P&lt;0.01) and internal rotation (P&lt;0.05), whereas male runners demonstrated significantly greater peak rearfoot eversion (P&lt;0.01). The knee abduction angles were positively correlated with hip adduction angles (r=0.49, P&lt;0.05) and negatively correlated with rearfoot eversion (r= -0.69, P&lt;0.001). There was no significant difference in normalised step width between genders (P&gt;0.05). Smaller rearfoot eversion and greater hip adduction related closely to the greater knee abduction as the distal and proximal factors, respectively. These relationships are thought to be the compensatory joint motions in the frontal plane, because there was no significant difference in the normalised step width between females and males. The current results suggest that if the step width is identical, the subjects with greater knee abduction had smaller rearfoot eversion to compensate for greater hip adduction, which were more apparent in females. This explains greater knee abduction found in female runners, which can be linked to a high risk of knee injury.

    DOI

  • Association between contraction-induced increases in elbow flexor muscle thickness and distal biceps brachii tendon moment arm depends on the muscle thickness measurement site

    Akagi, R, Iwanuma, S, Hashizume, S, Kanehisa, H, Yanai, T, Kawakami, Y

    J. Appl. Biomech.   30 ( 1 ) 134 - 139  2014  [Refereed]

     View Summary

    The purpose of this study was to investigate how the contraction-induced increase in distal biceps brachii tendon moment arm is related to that in elbow flexor muscle thickness, with a specific emphasis on the influence of the site-related differences in muscle thickness. The moment arm and muscle thickness were determined from sagittal and cross-sectional images, respectively, of the right arm obtained by magnetic resonance imaging of nine young men. The muscle thickness was measured at levels from the reference site (60% of the upper arm length from the acromial process of the scapula to the lateral epicondyle of the humerus) to 60 mm distal to it (every 10 mm; 7 measurement sites). At 80° of elbow flexion, the moment arm and muscle thickness were determined at rest and during 60% of maximal voluntary contraction (60%MVC) of isometric elbow flexion. Only the relative change from rest to 60%MVC in muscle thickness at the level 60 mm distal to the reference site correlated significantly with that of the moment arm. This result indicates that the contraction-induced increase in distal biceps brachii tendon moment arm is related to that in elbow flexor muscle thickness near the corresponding muscle-tendon junction. © 2014 Human Kinetics, Inc.

    DOI PubMed

  • Evaluation of serum leaking enzymes and investigation into new biomarkers for exercise-induced muscle damage

    Kanda, K, Sugama, K, Sakuma, J, Kawakami, Y, Suzuki, K

    Exerc. Immunol. Rev.   20   39 - 54  2014  [Refereed]

     View Summary

    This investigation determined whether existing muscle damage markers and organ damage markers respond to an acute eccentric exercise protocol and are associated with affected muscle symptoms. Nine healthy-young men completed one-leg calf-raise exercise with their right leg on a force plate. They performed 10 sets of 40 repetitions of exercise at 0.5 Hz with a load corresponding to half of their body weight, with 3 mm rest between sets. The tenderness of medial gastrocnemius, lateral gastrocnemius and soleus, and the ankle active range of motion (ROM) were assessed before, immediately after, 24 h and 48 h, 72 h, 96 h and 168 h after exercise. Blood and urine were collected pre-exercise and 2 h, 4 h, 24 h, 48 h, 72 h and 96 h post-exercise. Serum was analyzed for creatine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH) and aldolase (ALD) activities. We also determined hearttype fatty acid-binding protein (H-FABP), intestinal-type fatty acid-binding protein (I-FABP) and liver-type fatty acid-binding protein (L-FABP), neutrophil gelatinase-associated lipocalin (NGAL), interleukin (IL)-17A, IL-23, nerve growth factor (NGF), soluble-Endothelial (sE)-selectin, s-Leukocyte (L)-selectin, 5Platelets (P)-selectin, and 8-isoprostane in plasma and urine. The tenderness of proximal and middle gastrocnemius increased significantly 72 h (p&lt;0.05, p&lt;0.01) after exercise. Ankle active ROM in dorsal flexion decreased significantly 48 h (p&lt; 0.05) and 72 h (p&lt;0.01) after exercise. CK and ALD activities significantly increased at 72 h (p&lt;0.05) and remained elevated at 96 h (p&lt; 0.01) postexercise compared to pre-exercise values. Also, ALD which showed relatively lower interindividual variability was significantly correlated with tenderness of middle gastrocnemius at 72 h. LDH activity significantly increased 96 h postexercise (p&lt; 0.01), whereas the increase in AST and ALT activities 96 h post-exercise was not significantly different from pre-exercise values. There were no significant changes in FABPs, NGAL, IL-17A, IL-23, NGF, selectins and 8-isoprostanes in plasma and urine. In conclusion, calf-raise exercise induced severe local muscle damage symptoms which were accompanied by increases in both serum CK and ALD activities, but we could not detect any changes in examined markers of organ damage, inflammation and oxidative stress. Further research is needed to determine other more sensitive biomarkers and the underlying mechanisms of exercise-induced muscle damage.

  • Increase in vastus lateralis aponeurosis width induced by resistance training: implications for a hypertrophic model of pennate muscle

    Wakahara, T, Ema, R, Miyamoto, N, Kawakami, Y

    Eur. J. Appl. Physiol.   115 ( 2 ) 309 - 316  2014  [Refereed]

     View Summary

    Purpose: This study aimed to ascertain whether training-induced muscle hypertrophy is accompanied by an increase in the aponeurosis width, and to infer its impact on the training-induced increase in the pennation angle.
    Methods: Eleven young men completed a resistance training program of unilateral knee extensions for 12 weeks. Before and after training, anatomical cross-sectional area (ACSA) of the vastus lateralis and its distal aponeurosis width in the transverse plane were measured with magnetic resonance imaging. The pennation angle and fascicle length were also determined with ultrasonography at the midbelly of the muscle. The effect of change in aponeurosis width on the magnitude of training-induced increase in pennation angle was estimated by using a parallelepipedon model.
    Results: After the training, there were significant increases in ACSA (10.7 ± 7.6 %), pennation angle (10.8 ± 7.3 %) and aponeurosis width (1.9 ± 3.1 %), whereas no significant change was found in the fascicle length. The model simulation shows that the increase in aponeurosis width by 1.9 % reduces the magnitude of increase in pennation angle by only 0.4°.
    Conclusions: These results indicate that (1) the aponeurosis width of the vastus lateralis increases after 12 weeks of resistance training and (2) the increase in the aponeurosis width accompanying muscle hypertrophy by the amount of ~10 % does not substantially affect the increase in pennation angle.

    DOI PubMed

  • Running model and hopping robot using pelvic movement and leg elasticity

    Otani, T, Yahara, M, Uryu, K, Iizuka, A, Hashimoto, K, Kishi, T, Endo, N, Sakaguchi, M, Kawakami, Y, Hyon, S, H, Lim, H, O, Takanishi, A

    2014 IEEE International Conference on Robotics and Automation     2313 - 2318  2014  [Refereed]

     View Summary

    Human running motion can be modeled by a spring loaded inverted pendulum (SLIP). However, this model, despite being widely used in robotics, does not include human-like pelvic motion. In this study, we show that the pelvis actually contributes to the increase in jumping force and absorption of landing impact, both of which findings can be used to improve running robots. On the basis of the analysis of human running motion, we propose a new model named SLIP 2 (spring loaded inverted pendulum using pelvis). This model is composed of a body mass, a pelvis, and leg springs; the model can control its springs during running by use of pelvic movement in the frontal plane. To achieve hopping and running motions, we developed pelvis oscillation control, running velocity control, and stabilization control using an upper body, as control methods. We also developed a new hopping robot using the SLIP 2 model. To evaluate the proposed model and control methods, we performed hopping and running simulations. The simulation results showed that the SLIP 2 model successfully achieves hopping and running motions. The hopping robot was also able to accomplish hopping motion. The simulation results also showed that the difference between the pelvic rotational phase and the phase of oscillation of the mass vertical displacement affects the jumping force. In particular, the results revealed that the human-like pelvic rotation contributes to the absorption of landing impact and to the increase in takeoff forces, which validates our observations in human motion analysis.

  • Hopping robot using pelvic movement and leg elasticity

    Otani, T, Uryu, K, Yahara, M, Iizuka, A, Hamamoto, S, Miyamae, S, Hashimoto, K, Destephe, M, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    Mechanisms and Machine Science   22   235 - 243  2014  [Refereed]

     View Summary

    Analysis of human running has revealed that the motion of the human leg can be modeled by a compression spring because leg’s joints behave like a torsion spring. In addition, the pelvic movement in the frontal plane contributes to the increase in jumping force. We therefore assumed that human-like running, which requires higher output power than that of existing humanoid robots, could be realized based on these characteristics. Hence, we developed a model composed of a body mass, a pelvis and a rotational joint leg, and fabricated the leg by incorporating a stiffness adjustment mechanism that uses two leaf springs. In this way, we were able to achieve a human-like joint stiffness, which could be adjusted by varying the effective length of one of the leaf springs. We achieved hopping by resonance of the pelvic movement and joints’ elasticity.

    DOI

  • Leg with rotational joint that mimics elastic characteristics of human leg in running stance phase

    Otani, T, George, T, Uryu, K, Yahara, M, Iizuka, A, Hamamoto, S, Miyamae, S, Hashimoto, K, Destephe, M, Sakaguchi, M, Kawakami, Y, Lim, H, O, Takanishi, A

    2014 14th IEEE-RAS International Conference on Humanoid Robots     481 - 486  2014  [Refereed]

     View Summary

    In this paper, we describe the development of a leg with a rotational joint that mimics the elastic characteristics of the leg of a running human. The purpose of this development was to realize the dynamics of human running, the analysis of which has revealed that the motion of the leg can be modeled by a compression spring and that of the leg joint by a torsion spring. We, therefore, assumed that these elastic characteristics could be used to develop robots capable of human-like running, which requires higher output power than that of existing humanoid robots. Hence, we developed a model of a leg with a rotational joint and fabricated the leg by incorporating a mechanism comprising of two leaf springs for adjusting the joint stiffness. By this means, we were able to achieve human-like joint stiffness, which could be adjusted by varying the effective length of one of the leaf springs. We evaluated the performance of the adjustable stiffness of the joints, and were also able to achieve hopping by resonance of the rotational leg joint.

  • 骨格筋のバイオメカニクス

    川上泰雄

    月刊健康づくり     12 - 15  2014

    Authorship:Lead author, Corresponding author

  • 子どもの動きと筋力

    川上泰雄

    体育の科学   64 ( 11 ) 770 - 775  2014

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • ヒト生体腱における力学的特性の計測:つま先領域と線形領域の識別方法の提案

    茂木康嘉, 川上泰雄, 矢内利政

    バイオメカニクス研究   18 ( 2 ) 63 - 71  2014  [Refereed]

    J-GLOBAL

  • 柔道の「五の形」一本目における当身技の術理:柔道的当身技の視点から

    志々田文明, 阪口正律, 佐藤忠之, 川上泰雄

    スポーツ科学研究   11   212 - 224  2014  [Refereed]

    Authorship:Corresponding author

  • Nonuniform muscle hypertrophy: its relation to muscle activation in training session

    Wakahara, T, Fukutani, A, Kawakami, Y, Yanai, T

    Med. Sci. Sports Exerc.   45 ( 11 ) 2158 - 2165  2013.11  [Refereed]

     View Summary

    Purpose: Muscle hypertrophy in response to resistance training has been reported to occur nonuniformly along the length of the muscle. The purpose of the present study was to examine whether the regional difference in muscle hypertrophy induced by a training intervention corresponds to the regional difference in muscle activation in the training session. Methods: Twelve young men participated in a training intervention program for the elbow extensors with a multijoint resistance exercise for 12 wk (3 d.wk(-1)). Before and after the intervention, cross-sectional areas of the triceps brachii along its length were measured with magnetic resonance images. A series of transverse relaxation time (T2)-weighted magnetic resonance images was recorded before and immediately after the first session of training intervention. The T2 was calculated for each pixel within the triceps brachii. In the images recorded after the session, the number of pixels with a T2 greater than the threshold (mean + 1 SD of T2 before the session) was expressed as the ratio to the whole number of pixels within the muscle and used as an index of muscle activation (percent activated area). Results: The percent activated area of the triceps brachii in the first session was significantly higher in the middle regions than that in the most proximal region. Similarly, the relative change in cross-sectional area induced by the training intervention was also significantly greater in the middle regions than the most proximal region. Conclusion: The results suggest that nonuniform muscle hypertrophy after training intervention is due to the region-specific muscle activation during the training session.

    DOI

  • Inhomogeneous architectural changes of the quadriceps femoris induced by resistance training

    Ema, R, Wakahara, T, Miyamoto, N, Kanehisa, H, Kawakami, Y

    Eur. J. Appl. Physiol.   113 ( 11 ) 2691 - 2703  2013.11  [Refereed]

    Authorship:Corresponding author

     View Summary

    Purpose: This study aimed to clarify whether resistance training-induced changes in muscle architecture are homogeneous among the quadriceps and over different regions within each muscle. Methods: Eleven recreationally active men (27 ± 2 years) completed a 12-week resistance training program for knee extensors. Before and after the intervention, muscle thicknesses, fascicle lengths, and pennation angles of the four muscles (vastus lateralis, vastus medialis, vastus intermedius, rectus femoris) in several regions (2-4 regions per each muscle) were measured using ultrasonography. Anatomical cross-sectional areas (ACSAs) at the same positions as the ultrasound measurements were determined from magnetic resonance images. Results: Relative increases in the ACSA, muscle thickness, and pennation angle of the rectus femoris were significantly greater than those of the vasti. Relative increases in the ACSAs of the vastus lateralis and rectus femoris were significantly greater in the distal than in the proximal region, and those in the muscle thickness and pennation angle of the vastus intermedius were significantly greater in the medial than in the lateral region. Fascicle lengths did not change in any muscles. The interrelations between muscle thickness and pennation angle remained unchanged after the intervention, with a significant association between the relative changes of the two variables. Conclusion: The current results indicate that (1) hypertrophy of the quadriceps femoris is associated with a proportional increase in pennation angle but not necessarily in fascicle length, and (2) training-induced changes in muscle size and pennation do not evenly occur among the quadriceps, along or across a muscle. © 2013 Springer-Verlag Berlin Heidelberg.

    DOI PubMed

  • Validity of ultrasound muscle thickness measurements for predicting leg skeletal muscle mass in healthy Japanese middle-aged and older individuals

    Takai, Y, Ohta, M, Akagi, R, Kato, E, Wakahara, T, Kawakami, Y, Fukuunaga, T, Kanehisa, H

    J. Physiol. Anthropol.   32   12 - 12  2013.09  [Refereed]  [International journal]

     View Summary

    BACKGROUND: The skeletal muscle mass of the lower limb plays a role in its mobility during daily life. From the perspective of physical resources, leg muscle mass dominantly decreases after the end of the fifth decade. Therefore, an accurate estimate of the muscle mass is important for the middle-aged and older population. The present study aimed to clarify the validity of ultrasound muscle thickness (MT) measurements for predicting leg skeletal muscle mass (SM) in the healthy Japanese middle-aged and older population. FINDINGS: MTs at four sites of the lower limb and the bone-free lean tissue mass (LTM) of the right leg were determined using brightness-mode ultrasonography and dual-energy X-ray absorptiometry (DXA), respectively, in 44 women and 33 men, 52- to 78-years old. LTM was used as a representative variable of leg skeletal muscle mass. In the model-development group (30 women and 22 men), regression analysis produced an equation with R2 and standard error of the estimate (SEE) of 0.958 and 0.3 kg, respectively: LTM (kg) = 0.01464 × (MTSUM×L) (cm2) - 2.767, where MTSUM is the sum of the product of MTs at four sites, and L is length of segment where MT is determined. The estimated LTM (7.0 ± 1.7 kg) did not significantly differ from the measured LTM (7.0 ± 1.7 kg), without a significant systematic error on a Bland-Altman plot. The application of this equation for the cross-validation group (14 women and 11 men) did not yield a significant difference between the measured (7.2 ± 1.6 kg) or estimated (7.2 ± 1.6 kg) LTM and systematic error. CONCLUSION: The developed prediction equation may be useful for estimating the lean tissue mass of the lower extremity for the healthy Japanese middle-aged and older population.

    DOI PubMed

  • Relationship between muscle architecture and joint performance during concentric contractions in humans

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T, Yanai, T

    J. Appl. Biomech.   29 ( 4 ) 405 - 412  2013.08  [Refereed]

     View Summary

    The purpose of this study was to examine the relationship between muscle architecture of the triceps brachii (TB) and joint performance during concentric elbow extensions. Twenty-two men performed maximal isometric and concentric elbow extensions against various loads. Joint torque and angular velocity during concentric contractions were measured, and joint power was calculated. Muscle length, cross-sectional areas, and volume of TB were measured from magnetic resonance images. Pennation angle (PA) of TB at rest was determined by ultrasonography. The PA was significantly correlated with the maximal isometric torque (r = .471), but not to the torque normalized by muscle volume (r = .312). A significant correlation was found between PA and the angular velocity at 0 kg load (r = .563), even when the angular velocity was normalized by the muscle length (r = .536). The PA was significantly correlated with the maximal joint power (r = .519), but not with the power normalized by muscle volume (r = .393). These results suggest that PA has a positive influence on the muscle shortening velocity during an unloaded movement, but does not have a significant influence on the maximum power generation in untrained men.

  • In vivo measurement of human rectus femoris architecture by ultrasonography: validity and applicability

    Ema, R, Wakahara, T, Mogi, Y, Miyamoto, N, Komatsu, T, Kanehisa, H, Kawakami, Y

    Clin. Physiol. Funct. Imaging   33 ( 4 ) 267 - 273  2013.07  [Refereed]

    Authorship:Corresponding author

     View Summary

    The architectural feature of the rectus femoris (RF) has been scarcely investigated despite its substantial contribution to knee extension torque and large plasticity in the muscularity. This study aimed to examine the reproducibility and validity of ultrasound measurements of RF architecture and interrelationships among the architectural parameters. After confirming the measurement accuracy of an examiner (measurement errors &lt;1%), in vivo and cadaveric measurements of fascicle lengths and pennation angles of RF were performed. Day-to-day reproducibility of measurements was investigated in vivo including muscle thickness measurement. Validity of measurements was investigated by comparing the values between direct and ultrasound measurements for the cadaver. The intraclass correlation coefficients were 0 center dot 984, 0 center dot 960 and 0 center dot 932, and root mean square difference between measured values on 2days was 0 center dot 8mm, 3 center dot 1mm and 1 center dot 4 degrees for muscle thickness, fascicle length and pennation angle, respectively. The validity of measurements was similar or better than those of previous reports on other muscles. We also confirmed a positive correlation between the muscle thickness and the pennation angle as has been shown in other muscles. The current results warrant the use of B-mode ultrasonography for examining the architectural characteristics of RF in vivo.

    DOI

  • Further potentiation of dynamic muscle strength after resistance training

    Miyamoto, N, Wakahara, T, Ema, R, Kawakami, Y

    Med. Sci. Sports Exerc.   45 ( 7 ) 1323 - 1330  2013.07  [Refereed]

     View Summary

    Purpose: One bout of 5-6 s of maximal voluntary isometric contraction (MVC) is known to enhance subsequent dynamic joint performance such as dynamic joint torque and power with maximal voluntary effort. On the other hand, such a muscle contraction can also induce muscle fatigue. It is then possible that individual differences in fatigue resistance is a factor that affects the balance between potentiation and fatigue. Here, we examined the effect of chronic heavy-resistance training on the extent and time course of the potentiation of maximal voluntary dynamic torque. Methods: Before and after a 12-wk intervention, maximal voluntary concentric knee extension torque at 210 degrees.s(-1) was measured in the following sequence: before and immediately after a 5-s MVC of knee extension and 1, 3, and 5 min thereafter. The training group performed heavy-resistance training exercise of knee extension consisting of five sets of eight repetitions with 80% of one-repetition maximum, three sessions a week during the intervention period. Results: Before the resistance training intervention, maximal voluntary concentric torque was significantly enhanced only at 1 and 3 min post-MVC. After the 12-wk resistance training, the maximal voluntary concentric torque was potentiated also immediately after the conditioning MVC and was further increased at 1-min point. Conclusion: These findings indicate that the contraction-induced potentiation of maximal voluntary dynamic torque is pronounced in strength-trained individuals.

    DOI

  • 1A2-A11 Effects on Lift Force of Feathering Motions of a Flapping Robot(Bio-Mimetics and Bio-Mechatronics (2))

    IDESAWA Yoshihito, KUWABARA Takeru, ANSAI Kenichiro, ITABASHI Kanto, SAWANE Satoru, TOMINAGA Shunpei, SAKAGUCHI Masanori, MATSUMOTO Nana, KAWAKAMI Yasuo, WATANABE Takanobu

      2013   "1A2 - A11(1)"-"1A2-A11(3)"  2013.05

     View Summary

    We have developed a flapping robot with active feathering wings by using a "scissors swing motor (SSM)". In the present study, we investigate how the feathering motion, which changes the angle of attack of the wing, affects the lift by means of motion capture experiment. Infrared reflective makers were placed on the wing frames, and their 3D-coordinates were tracked. The weight change of the robot was monitored simultaneously with a load cell, and we measured the lift force produced by flapping motion. The results show that deformation of wing surface during the flapping motion deteriorates the lift, and the feathering motion effectively suppresses the deformation of the wing.

    CiNii J-GLOBAL

  • 04生-29-口-08 女子ボート選手における大腿四頭筋の量的特徴(04 運動生理学,一般研究発表抄録)

    江間 諒一, 若原 卓, 平山 邦明, 金久 博昭, 川上 泰雄

    日本体育学会大会予稿集   64   162 - 163  2013

    DOI CiNii J-GLOBAL

  • 04生-30-ポ-69 筋疲労軽減を目的とした弾性圧迫ストッキングに段階的着圧設計は有効か?(04 運動生理学,一般研究発表抄録)

    宮本 直和, 川上 泰雄

    日本体育学会大会予稿集   64   186 - 187  2013

    DOI CiNii J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第3報:板ばねを用いた弾性可変機構を持つ回転関節脚)

    瓜生和寛, 大谷拓也, 八原昌亨, 飯塚晃弘, 濱元伸也, デステフ マチュー, 橋本健二, 橋本健二, 保原浩明, 阪口正律, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   31st  2013

    J-GLOBAL

  • 骨盤運動に着目した2足走行ロボットの開発(第1報:骨盤運動と脚弾性を活用した走行モデルの考案)

    大谷拓也, 八原昌亨, 瓜生和寛, 橋本健二, 阪口正律, 川上泰雄, LIM Hun-ok, 高西淳夫

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM)   2013  2013

    J-GLOBAL

  • Morphological and mechanical properties of the Achilles tendon in adolescent boys

    Mogi, Y, Torii, S, Kawakami, Y, Yanai, T

    Japanese J. Phys. Fit. Sports Med.   62 ( 4 ) 303 - 313  2013

     View Summary

    The present study aimed to investigate how the morphological and mechanical properties of Achilles tendon change in adolescent boys. Twenty-nine adolescent boys and 12 male adults participated. Ultrasonography was used to measure Achilles tendon elongation. The transition point, that is, the intersection point of the "Toeδ and "Linearδ regions was determined from tendon elongation-tendon force relationship, and the stiffness and Young's modulus of the Achilles tendon were calculated from linear region. The hysteresis was calculated as the ratio of the area within the tendon elongation-tendon force loop to the area beneath the load portion of the curve. The stiffness, Young's modulus and stress at transition point were greater in adults (544 ± 231 N/mm, 1.6 ± 0.7 GPa, 23 ± 6 MPa) than in adolescents (374 ± 177 N/mm, 1.1 ± 0.7 GPa, 19 ± 10 MPa). However, no differences were observed in the tendon length and the tendon cross-sectional area and stress at transition point between adolescents (174 ± 23 mm, 60 ± 11 mm , 6.1 ± 2.0 %) and adults (180 ± 30 mm, 63 ± 7 mm , 5.5 ± 2.2 %). The hysteresis in adolescents (20 ± 18 %) was greater than that of adults (12 ± 10 %). These results suggest that the morphological properties of Achilles tendon are similar between adolescents and adults, but that mechanical properties are altered with growth to become a stiffer and more spring-like structure. 2 2

    DOI J-GLOBAL

  • Nonuniform muscle oxygenation despite uniform neuromuscular activity within the vastus lateralis during fatiguing heavy resistance exercise

    Miyamoto N, Wakahara T, Ema R, Kawakami Y

    Clin. Physiol. Funct. Imaging   33 ( 6 ) 463 - 469  2013  [Refereed]

    DOI

  • Eccentric exercise-induced delayed-onset muscle soreness and changes in markers of muscle damage and inflammation.

    Kanda K, Sugama K, Hayashida H, Sakuma J, Kawakami Y, Miura S, Yoshioka H, Mori Y

    Exer Immunol Rev (EIR)   19   74 - 87  2013

  • The activation time-course of contractile elements estimated from in vivo fascicle behaviours during twitch contractions

    Oda, T, Himeno, R, Hay, D, C, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Sports Sci.   31 ( 11 ) 1233 - 1241  2013  [Refereed]

     View Summary

    To better understand the cascade from neural activation up to force production within in vivo contracting muscle-tendon units, we estimated activation of contractile elements from experimentally measured human fascicle length change and force using a Hill-type muscle model. The experiment was conducted with respect to twitch contractions of the tibialis anterior muscle at three joint angles. As muscle contractile element force is a function of its length and velocity, the activation of contractile elements was calculated using a Hill-type muscle model and measured data. The results were able to reproduce the continuous rising activation of contractile elements after termination of electromyographic activity, the earlier shift of peak activation in time compared to twitch force, and the differences in time-course activation at three different joint angles. These findings are consistent with the predicted change in the activation of contractile elements from previous reports. Also, the results suggest that the time-course of the activation of contractile elements was greatly influenced by the change in force generating capacities related to both length and velocity, even in fixed end contractions, which could result from muscle-tendon interaction. © 2013 Taylor &amp
    Francis.

    DOI PubMed

  • Validity of three-dimensional photonic scanning technique for estimating percent body fat

    Shitara, K, Kanehisa, H, Fukunaga, T, Yanai, T, Kawakami, Y

    J. Frailty Aging   2   192 - 197  2013  [Refereed]

  • Potentiation of isokinetic torque is velocity-dependent following an isometric conditioning contraction

    Fukutani, A, Miyamoto, N, Kanehisa, H, Yanai, T, Kawakami, Y

    SpringerPlus   2 ( 1 ) 1 - 10  2013  [Refereed]

     View Summary

    Not only twitch torque but also the maximal voluntary concentric torque increases after a high-intensity contraction (conditioning contraction). The purpose of this study was to test the hypothesis that the increase in the maximal voluntary concentric torque induced by a conditioning contraction is prominent when tested at fast angular velocities conditions. Twelve healthy male participants performed the maximal voluntary isometric plantar flexion for six seconds as a conditioning contraction. Before and after the conditioning contraction, peak torques during the maximal voluntary concentric plantar flexions were measured at 30°/s (slow) and 180°/s (fast), each of which was carried out in a separate condition. Isometric twitch torque was also recorded before and after the conditioning contraction in each of the two velocity conditions to confirm the extent of the positive effect of the conditioning contraction. The extent of increase in isometric twitch torque was similar between the two velocity conditions, whereas the maximal voluntary concentric torque increased significantly only in the fast velocity condition (p = 0.003). These results support the hypothesis and indicate that the maximal voluntary concentric torque can be potentiated by the conditioning contraction if the joint angular velocity during the maximal voluntary concentric contraction is sufficiently high. © 2013 Fukutani et al.

    DOI

  • Combined effects of stretching and resistance training on ankle joint flexibility

    Kato, E, Kurihara, T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Physiol. J.    2013  [Refereed]

    DOI

  • 思春期男子におけるアキレス腱の形態学的・力学的特性

    茂木康嘉, 鳥居俊, 川上泰雄, 矢内利政

    体力科学   62   303 - 313  2013  [Refereed]

  • 大腿部への圧迫が電気刺激による誘発膝関節伸展トルクに及ぼす影響

    松本奈々, 宮本直和, 浦中宏典, 丸茂智彦, 谷口耕一, 川上泰雄

    トレーニング科学   25 ( 1 ) 55 - 60  2013  [Refereed]

    J-GLOBAL

  • Potentiation of maximal voluntary concentric torque in human quadriceps femoris

    Miyamoto, N, Kanehisa, H, Kawakami, Y

    Med. Sci. Sports Exerc.   44 ( 9 ) 1738 - 1746  2012.09  [Refereed]

     View Summary

    MIYAMOTO, N., H. KANEHISA, and Y. KAWAKAMI. Potentiation of Maximal Voluntary Concentric Torque in Human Quadriceps Femoris. Med. Sci. Sports Exerc., Vol. 44, No. 9, pp. 1738-1746, 2012. Purpose: Previous studies have shown that one bout of 6-s maximal voluntary contraction (MVC) can enhance subsequent dynamic joint performance with maximal voluntary effort. However, the conditioning contraction also induces central fatigue, which attenuates the enhancement of the subsequent voluntary joint performance. Here, as a modality for minimizing the fatigue while enhancing joint performance, we examined the effects of one bout of a short-duration isometric MVC and neuromuscular electrical stimulation (NMES). Methods: In the first experiment, the optimal duration of NMES for inducing twitch potentiation of the quadriceps femoris muscle was determined, which was found to be 5 s. Then in the second experiment, 13 subjects performed maximal voluntary isokinetic concentric knee extensions at 210 degrees s(-1) in the following sequence: before and immediately after each of the 3-, 5-, and 10-s MVCs and 5-s NMES of knee extension and 1, 3, and 5 min thereafter. Results: When the isometric MVC was used as a conditioning contraction, the maximal voluntary concentric torque was significantly enhanced at 1 and 3 mm after MVC only in the 5-s MVC trial (106.6% +/- 2.3% and 107.2% +/- 2.6% of the initial value, respectively) but not in the 3- and 10-s MVC trials. In the 5-s NMES trial, the voluntary concentric torque was significantly increased immediately after the conditioning contraction (105.1% +/- 2.2%) as well as 1 and 3 min thereafter (107.5% +/- 3.3% and 107.8% +/- 2.7%, respectively). Conclusions: These results suggest that conditioning contraction of around 5 s, performed with isometric MVC or NMES, can be a modality to enhance dynamic voluntary joint performance, with the latter having a more immediate effect.

    DOI

  • Neural modulation of muscle-tendon control strategy after a single practice session

    Hirayama, K, Yanai, T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Med. Sci. Sports Exerc.   44 ( 8 ) 1512 - 1518  2012.08  [Refereed]

     View Summary

    Purpose: The purpose of the present study was to examine a hypothesis that the musculotendinous behavior during a propelling action with a countermovement can be altered by a single practice session through modulation of neuromuscular activities. Methods: Eight males performed unilateral maximal plantarflexion with (CMJ) and without (noCMJ) countermovement before and after a practice consisting of six sets of three repetitions of unilateral CMJ exercises. Measurements included EMG activities of the triceps surae and tibialis anterior muscles and the fascicle behavior of the gastrocnemius by ultrasonography, and impulse was calculated from the force-time data. The change in tendon length was also estimated. Results: The impulse in CMJ increased after the practice, but that in noCMJ did not. After the practice, the magnitude of fascicle lengthening and shortening in CMJ decreased, which was accompanied by an increase in tendon shortening without change in the ankle joint range of motion. The time lag from the onset of reaction force to that of EMG activities of the triceps surae muscles was shortened after the practice. Conclusions: The results support the hypothesis and indicate that, as a neural modulation through a single practice, the muscle-tendon unit behavior during CMJ can be optimized to improve the performance. © 2012 by the American College of Sports Medicine.

    DOI PubMed

  • Influence of the intensity of a conditioning contraction on the subsequent twitch torque and maximal voluntary concentric torque

    Fukutani, A, Miyamoto, N, Kanehisa, H, Yanai, T, Kawakami, Y

    J.Electromyogr. Kinesiol.   22 ( 4 ) 560 - 565  2012.08  [Refereed]

    Authorship:Corresponding author

     View Summary

    This study aimed to clarify the influence of the intensity of a conditioning contraction on subsequent isometric twitch and maximal voluntary concentric torques. Subjects (n = 12 men) performed voluntary isometric plantar flexion for six seconds as a conditioning contraction, at intensities of 40%, 60%, 80% and 100% of a maximal voluntary isometric contraction (MVIC). Before and immediately after the conditioning contraction, isometric twitch and maximal voluntary concentric (180 degrees/s) plantar flexion torques were determined. Surface electromyograms were recorded from the triceps surae muscles and M-wave amplitudes and root-mean-square values of the electromyographic signals (RMSEMG) were calculated. The isometric twitch torque increased significantly after conditioning contraction at all intensities (P &lt; 0.05), whereas maximal voluntary concentric torque increased significantly only at 80% and 100% MVIC conditions (P &lt; 0.05). It is concluded that during a six second conditioning contraction, the effect of the intensity of a conditioning contraction on subsequent torque development is different between an isometric twitch and maximal voluntary concentric contractions, with the latter being less affected. (c) 2012 Elsevier Ltd. All rights reserved.

    DOI

  • Estimation of local strain and stress in human Achilles tendon tissue during jumping

    小田俊明, 川上泰雄, 片岡弘之, 横田秀夫, 姫野龍太郎

    バイオメカニクス研究   16 ( 2 ) 54 - 63  2012.07

    J-GLOBAL

  • Comparison of skeletal muscle mass to fat-free mass ratios among different ethnic groups

    Abe, T, Bemben, M, G, Kondo, M, Kawakami, Y, Fukunaga, T

    J. Nutrition Health Aging   16 ( 6 ) 534 - 538  2012.06  [Refereed]

     View Summary

    Asians seem to have less skeletal muscle mass (SMM) than other ethnic groups, but it is not clear whether relative SMM, i.e., SMM / height square or SMM to fat-free mass (FFM) ratio, differs among different ethnic groups at the same level of body mass index (BMI).
    To compare the SMM to fat-free mass (FFM) ratio as well as anthropometric variables and body composition among 3 ethnic groups.
    Three hundred thirty-nine Japanese, 343 Brazilian, and 183 German men and women were recruited for this cross-sectional study.
    Muscle thickness (MTH) and subcutaneous fat thickness (FTH) were measured by ultrasound at nine sites on the anterior and posterior aspects of the body. FTH was used to estimate the body density, from which fat mass and fat-free mass (FFM) was calculated by using Brozek equation. Total SMM was estimated from ultrasound-derived prediction equations.
    Percentage body fat was similar among the ethnic groups in men, while Brazilians were higher than Japanese in women. In German men and women, absolute SMM and FFM were higher than in their Japanese and Brazilians counterparts. SMM index and SMM:FFM ratios were similar among the ethnic groups in women, excluding SMM:FFM ratio in Brazilian. In men, however, these relative values (SMM index and SMM:FFM ratio) were still higher in Germans. After adjusting for age and BMI, the SMM index and SMM:FFM ratios were lower in Brazilian men and women compared with the other two ethnic groups, while the SMM index and SMM:FFM ratios were similar in Japanese and German men and women, excluding SMM:FFM ratio in women.
    Our results suggest that relative SMM is not lower in Asian populations compared with European populations after adjusted by age and BMI.

    DOI

  • Fascicle-tendon behavior of the gastrocnemius and soleus muscles during ankle bending exercise at different movement frequencies

    Sakuma, J, Kanehisa, H, Yanai, T, Fukunaga, T, Kawakami, Y

    Eur. J. Appl. Physiol.   112 ( 3 ) 887 - 898  2012.03  [Refereed]

    Authorship:Corresponding author

     View Summary

    The present study investigated the effect of movement frequencies on the behavior of fascicles and tendons of synergistic muscles. Seven male subjects performed ankle bending (calf-raise) exercises at four movement frequencies (1.33, 1.67, 1.84, and 2.00 Hz), performed with an identical range of ankle joint motion. The fascicle and tendon behavior of medial gastrocnemius (MG) and soleus (SOL) was measured by ultrasonography while kinematic and kinetic parameters of the ankle were recorded. The torque of ankle joint was larger at higher exercise frequencies. The length change of muscle decreased and that of tendon increased at higher frequencies both for MG and for SOL, with no significant inter-muscle differences in the relative changes of muscle or tendon lengths to that of MTU. Changes of pennation angles and electromyographic activities as a function of movement frequency were also comparable for MG and SOL. These results suggest that under a stretch-shortening cycle action, the muscle-tendon interaction is altered by the movement frequency toward greater use of tendon elastic energy to provide greater MTU power at a higher frequency. Results also suggest that the movement frequency dependence of fascicle and tendon behavior is comparable between MG and SOL.

    DOI

  • Task-dependent inhomogeneous muscle activities within the bi-articular human rectus femoris muscle

    Miyamoto, N, Wakahara, T, Kawakami, Y

    PLoS One   7 ( 3 ) e34269  2012.03  [Refereed]

     View Summary

    The motor nerve of the bi-articular rectus femoris muscle is generally split from the femoral nerve trunk into two sub-branches just before it reaches the distal and proximal regions of the muscle. In this study, we examined whether the regional difference in muscle activities exists within the human rectus femoris muscle during maximal voluntary isometric contractions of knee extension and hip flexion. Surface electromyographic signals were recorded from the distal, middle, and proximal regions. In addition, twitch responses were evoked by stimulating the femoral nerve with supramaximal intensity. The root mean square value of electromyographic amplitude during each voluntary task was normalized to the maximal compound muscle action potential amplitude (M-wave) for each region. The electromyographic amplitudes were significantly smaller during hip flexion than during knee extension task for all regions. There was no significant difference in the normalized electromyographic amplitude during knee extension among regions within the rectus femoris muscle, whereas those were significantly smaller in the distal than in the middle and proximal regions during hip flexion task. These results indicate that the bi-articular rectus femoris muscle is differentially controlled along the longitudinal direction and that in particular the distal region of the muscle cannot be fully activated during hip flexion.

    DOI

  • In vivo measurement of moment arm lengths of three elbow flexors at rest and during isometric contractions

    Akagi, R, Iwanuma, S, Hashizume, S, Kanehisa, H, Yanai, T, Kawakami, Y

    J. Appl. Biomech.   28 ( 1 ) 63 - 69  2012.02  [Refereed]

     View Summary

    The purpose of this study was to determine in vivo moment arm lengths (MAs) of three elbow flexors at rest and during low- and relatively high-intensity contractions, and to examine the contraction intensity dependence of MAs at different joint positions. At 50 degrees,80 degrees and 110 degrees of elbow flexion, MAs of the biceps brachii, brachialis and brachioradialis were measured in 10 young men using sagittal images of the right arm obtained by magnetic resonance imaging, at rest and during 20% and 60% of isometric maximal voluntary elbow flexion. In most conditions, MAs increased with isometric contractions, which is presumably due to the contraction-induced thickening of the muscles. This phenomenon was especially evident in the flexed elbow positions. The influence of the contraction intensities on the increases in MAs varied across the muscles. These results suggest that in vivo measurements of each elbow flexor MA during contractions are essential to properly examine the effects on the interrelationships between elbow flexion torque and individual muscle forces.

  • Association between regional differences in muscle activation in one session of resistance exercise and in muscle hypertrophy after resistance training

    Wakahara, T, Miyamoto, N, Sugisaki, N, Murata, K, Kanehisa, H, Kawakami, Y, Fukunaga, T, Yanai, T

    Eur. J. Appl. Physiol.   112   1569 - 1576  2012  [Refereed]

  • In vivo determination of the Achilles tendon moment arm in three-dimensions

    Hashizume, S, Iwanuma, S, Akagi, R, Kanehisa, H, Kawakami, Y, Yanai, T

    J. Biomech.   45   409 - 413  2012  [Refereed]

  • Twitch potentiation after voluntary contraction and neuromuscular electrical stimulation at various frequencies in human quadriceps femoris

    Miyamoto, N, Fukutani, A, Yanai, T, Kawakami, Y

    Muscle Nerve   45 ( 1 ) 110 - 115  2012.01  [Refereed]

     View Summary

    Introduction: In this study we aimed to compare the extent of twitch potentiation (TP) after voluntary contraction and percutaneous electrical stimulation of muscles (neuromuscular electrical stimulation: NMES) with various stimulation frequencies at equivalent target levels. Methods: Isometric knee extensions of 10 s were performed at a 40% maximal voluntary contraction level by voluntary or NMES conditioning contractions at 20, 40, and 80 HZ of the quadriceps femoris muscle. Twitch responses were elicited by stimulating the femoral nerve transcutaneously at supramaximal intensity. Results: NMES at 80 HZ induced significantly less TP (128.7 +/- 17.1%) than voluntary contraction (156.2 +/- 23.1%), whereas no statistical difference was found in TP among voluntary and 20- and 40-HZ NMES conditioning contractions (170.8 +/- 21.1% and 162.7 +/- 16.9% for 20- and 40-HZ NMES, respectively). Conclusion: Stimulation frequency of NMES determines whether NMES can induce TP comparable to that after voluntary contraction. Muscle Nerve 45: 110115, 2012

    DOI

  • 骨盤の傾斜角度が最大随意膝関節伸展トルクに及ぼす影響

    江間諒一, 平田浩祐, 若原卓, 金久博昭, 川上泰雄

    バイオメカニクス研究   16   74 - 81  2012  [Refereed]

  • Morphological and functional characteristics of the muscle-tendon unit

    Kawakami, Y

    J. Phys. Fit. Sports Med.   1 ( 2 ) 287 - 296  2012  [Refereed]

    Authorship:Lead author, Corresponding author

  • Comparison of skeletal muscle mass to fat-free mass ratio between Japanese-Brazilians and Japanese

    Abe, T, Kawakami, Y, Bass, M, Kondo, M, Fukunaga, T

    J. Aging Res. Clin. Pract.    2012  [Refereed]

  • ボート競技の効率測定

    川上泰雄

    体育の科学   62 ( 10 ) 767 - 770  2012

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • Comparison of age-related, site-specific muscle loss between young and old active and inactive Japanese women

    Abe, T, Kawakami, Y, Bemben, M, G, Fukunaga, T

    J. Geriat. Phys. Ther.   34 ( 4 ) 168 - 173  2011.10  [Refereed]

     View Summary

    Purpose: To compare the effect of habitual recreational sports and exercise activity on age-related, site-specific muscle loss in young and old women in Japan.
    Methods: Participants included 152 young (aged 20-35 years) and 157 old (aged 60-85 years) women who were classified into 4 subgroups on the basis of their habitual (more than once a week) sports and exercise activity: young active (n = 86), young inactive (n = 66), old active (n = 43), and old inactive (n = 114). Muscle thickness (MTH) and fat thickness (FTH) were measured by ultrasonography at 8 sites, with MTH expressed in terms relative to limb length (MTH/L) or height (MTH/Ht). Percent fat was estimated from FTH, and fat-free mass was calculated.
    Results: Fat-free mass was similar between younger and older women and between active and inactive women. MTH/L in the quadriceps (P &lt; .001), abdomen (P &lt; .001), and triceps surae (P &lt; .05) was lower in the older women than in the younger women. In contrast, MTH/L in the hamstrings, subscapula, and biceps was higher (P &lt; .01) in the older women than in the younger women. Compared with the MTH of the young inactive women, the MTH of the young active women was greater (P &lt; .05) in 5 sites. Similarly, MTH/L in the quadriceps and triceps was higher (P &lt; .05) in the old active women than in the old inactive women. However, quadriceps MTH/L and abdomen MTH/Ht were still lower (P &lt; .001) in the old active women than in the young inactive women.
    Conclusion: Age-related muscle loss remains site-specific in both active and inactive young and old women, even when habitual physical activity has an effect on muscle size.

    DOI

  • Ultrasound method for estimating the cross-sectional area of the psoas major muscle

    Takai, Y, Katsumata, Y, Kawakami, Y, Kanehisa, H, Fukunaga, T

    Med. Sci. Sports Exerc.   43 ( 10 ) 2000 - 4  2011.10  [Refereed]  [International journal]

     View Summary

    PURPOSE: The present study aimed to develop an ultrasonographic method for estimating the cross-sectional area of the psoas major muscle. METHODS: The muscle cross-sectional area (CSA(MRI)) and thickness (MT(MRI)) of the psoas major muscle at L4-L5 on the right and left sides of the body were measured using magnetic resonance imaging in 11 healthy sedentary men age 21 to 25 yr. Ultrasonographic images were obtained at the corresponding sites where CSA(MRI) and MT(MRI) measurements were performed. From the ultrasonographic images, the thickness of the psoas major muscle (MT(US)) was analyzed on both sides of the body. RESULTS: The interclass correlation coefficient of MT(US) measurements performed on two separated days was 0.951 for the right side and 0.971 for the left side. CSA(MRI) was significantly correlated to MT(MRI) (r = 0.934 for the right side and r = 0.910 for the left side). There was no significant difference between MT(MRI) (4.68 ± 0.39 cm for the right side and 4.73 ± 0.39 cm for the left side) and MT(US) (4.67 ± 0.40 cm for the right side and 4.72 ± 0.43 cm for the left side). The MT(US) was significantly correlated to MT(MRI) (r = 0.979 for the right side and r = 0.980 for the left side) and CSA(MRI) (r = 0.947 for the right side and r = 0.916 for the left side). CONCLUSION: The current results indicate that the psoas major muscle thickness determined by the ultrasonographic method is useful for estimating the cross-sectional area of the psoas major muscle.

    DOI PubMed

  • Development of equations for predicting body surface area in children by the use of three-dimensional photonic image scanning

    Shitara, K, Midorikawa, T, Ohta, M, Yanai, T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Japanese Journal of Physical Fitness and Sports Medicine   60 ( 4 ) 453 - 462  2011.09

    Authorship:Corresponding author

     View Summary

    In this study, we examined applicability of existing equations to predicting the body surface area (BSA) of children, and newly developed prediction equations for the BSA of children. BSA of 87 children of both genders (7 ∼ 12 yr) was determined by the three-dimensional photonic image scanning (3DPS), which was used as reference. BSA predicted using existing equations yielded overestimation or underestimation and/or a systematic error with respect to the reference. BSA prediction equations for boys and girls were developed using height and body mass as independent variables for the validation group and cross-validated for another group. The standard errors of estimation of the prediction equations were 105 cm 2 (0.9 %) for boys and 158 cm 2 (1.4 %) for girls. In the cross-validation group, there was no significant difference between the predicted and measured values without systematic errors. These findings indicate that existing equations cannot accurately predict BSA of children, and that the newly developed prediction equations are capable of predicting BSA of children with adequate accuracy.

  • Unique spatial distribution of in vivo human muscle activation

    Kinugasa, R, Kawakami, Y, Sinha, S, Fukunaga, T

    Exp. Physiol.   96 ( 9 ) 938 - 948  2011.09  [Refereed]

     View Summary

    The present study examined spatial changes in the muscle activation pattern with different contraction intensity using magnetic resonance imaging (MRI). Transverse relaxation time (T2)-weighted MRI was used to acquire 22 axial slices, which covered the entire medial gastrocnemius muscle, before and immediately after seven sets of 10 plantarflexions with loads that were approximately 20 and 60% of their one-repetition maximum, respectively. Reconstructions of the activated regions from MR images revealed the following: (1) the muscle activation determined by MRI correlated significantly (P &lt; 0.05) with the results of electromyography; (2) the activated area distribution increased with increasing force levels; and (3) differential activation between 20 and 60% load was distributed in a spatially non-uniform manner within the muscle, and some regions indicated reduced activity. These results indicate that at submaximal contraction intensity, activation does not necessarily increase in the whole muscle with increase in contraction intensity.

    DOI

  • Comparison of ultrasound-measured age-related, site-specific muscle loss between healthy Japanese and German men

    Abe, T, Kawakami, Y, Kondo, M, Fukunaga, T

    Clin. Physiol. Funct. Imaging   31 ( 4 ) 320 - 325  2011.07  [Refereed]

     View Summary

    The purpose of this study was to compare the age-related muscle loss in both the appendicular and trunk regions in 207 Japanese and 111 German men aged 20-62 years. Ultrasound-measured muscle thickness (MTH) was taken at eight sites from the anterior and posterior aspects of the body, and the MTH was expressed in terms relative to limb length (MTH/L) or standing height (MTH/Ht). In both the Japanese and Germans, age was correlated with quadriceps MTH (Japanese, r = -0.347; Germans, r = -0.292; both P&lt;0.01) and abdomen MTH (Japanese, r = -0.300, P&lt;0.01; Germans, r = -0.232; P&lt;0.05). On the other hand, hamstring MTH was correlated with age in the Japanese (r = -0.188, P&lt;0.01), but not in the Germans (r = 0.100). There were no significant correlations between age and other limb (i.e. triceps surae MTH/L, Japanese, r = 0.04; Germans, r = 0.05) and trunk sites (subscapula MTH/Ht, Japanese, r = -0.09; Germans, r = -0.02). In conclusion, age-related skeletal muscle loss was strongly observed in the quadriceps and abdominal sites in both the Japanese and German men, although the rate of regular physical activity was different between the two groups.

    DOI

  • Effect of muscle contraction levels on the force-length relationship of the human Achilles tendon during lengthening of the triceps surae muscle-tendon unit

    Sugisaki, N, Kawakami, Y, Kanehisa, H, Fukunaga, T

    J. Biomech.   44 ( 11 ) 2168 - 2171  2011.07  [Refereed]

     View Summary

    Findings from animal experiments are sometimes contradictory to the idea that the tendon structure is a simple elastic spring in series with muscle fibers, and suggest influence of muscle contraction on the tendon mechanical properties. The purpose of the present study was to investigate the influence of muscle contraction levels on the force-length relationship of the human Achilles tendon during lengthening of the triceps surae muscle-tendon unit. For seven subjects, ankle dorsiflexion was performed without (passive condition) and with contraction of plantar flexor muscles (eccentric conditions, at 3 contraction levels) on an isokinetic dynamometer. Deformation of the Achilles tendon during each trial was measured using ultrasonography. The Achilles tendon force corresponding to the tendon elongation of 10 mm in the passive condition was significantly smaller than those in the eccentric conditions (p &lt; 0.05 or p &lt; 0.01). Within the eccentric conditions, the Achilles tendon force corresponding to the tendon elongation of 10 mm was significantly greater in the maximal contraction level than those in submaximal eccentric conditions (p &lt; 0.05 or p &lt; 0.01). In addition, the tendon stiffness was greater in higher contraction levels (p &lt; 0.05 or p &lt; 0.01). Present results suggest that the human tendon structure is not a simple elastic spring in series with muscle fibers. (c) 2011 Elsevier Ltd. All rights reserved.

    DOI

  • Methodological issues related to thickness-based muscle size evaluation

    Akagi, R, Iwanuma, S, Fukuoka, M, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Physiol. Anthropol.   30 ( 4 ) 169 - 174  2011.07  [Refereed]

     View Summary

    The purpose of this study was to highlight the issues related to thickness-based muscle size evaluation that is commonly done in :field studies. The cross-sectional area, thickness (the vertical distance from the upper end of the elbow flexors to that of the humerus) and width (the horizontal distance from the left to the right end of the elbow flexors) of the elbow flexors at levels from the reference site (60% of the upper arm length from the acromial process of the scapula to the lateral epicondyle of the humerus) to 5 cm distal to it were determined in 11 young men using magnetic resonance imaging, both at rest and during isometric elbow flexion at 30% of maximal voluntary contraction. During 30% of maximal voluntary contraction, the thickness increased but the width decreased at each measurement site compared with those at rest. This was possibly due to difference in muscle slackness between both conditions. The correlation coefficients between the thickness and cross-sectional area for the elbow flexors were significantly lower at rest (r=0.551-0.856) than during 30% of maximal voluntary contraction (r=0.711-0.922). The present findings indicate that the thickness-based muscle size measurement at rest includes errors owing to the slackness of the resting muscles. J Physiol Anthropol 30(4): 169-174, 2011 http://www.jstage.jst.go.jp/browse/jpa2 [DOI: 10.2114/jpa2.30.169]

    DOI

  • Effect of pressure intensity of graduated elastic compression stocking on muscle fatigue following calf-raise exercise

    Miyamoto, N, Hirata, K, Mitsukawa, N, Yanai, T, Kawakami, Y

    J. Electrtomyogr. Kinesiol.   21 ( 2 ) 249 - 254  2011.04  [Refereed]

     View Summary

    The purpose of the present study was to examine the effects of wearing a graduated elastic compression (EC) stocking, with different pressure profiles during a fatiguing calf-raise exercise session, on the torque generating capacity after exercise. Fourteen subjects performed 15 sets of 10 repetitions of calf-raise exercise, wearing one of three stockings of different compression pressure profiles: two kinds of EC stockings (one (EC30) with 30 mm Hg at the ankle, 21-25 mm Hg at the calf, and 10 mm Hg below the knee, and the other (EC18) with 18, 12-14, and 7 mm Hg at the same regions, respectively) and a non-EC sport stocking as a control (CON). Before and after the exercise, torque and electromyographic (EMG) signals of medial gastrocnemius and soleus muscles were recorded during an evoked triplet contraction and the maximal voluntary contraction (MVC). All stockings had no effect on the decline of the MVC torque whereas the reduction of the evoke triplet torque in EC30 stocking condition was significantly smaller compared with that in CON (-6.4 +/- 8.5% for EC30 and -16.5 +/- 9.0% for CON, P &lt; 0.05). The reduction of the mean power frequency of EMG during MVC in the EC30 condition was significantly smaller than that in CON (-4.4 +/- 10.9 Hz for EC30 and -18.7 +/- 7.9 Hz for CON, P &lt; 0.05). These results suggest that the EC stocking with adequate pressure at the calf region relieves muscle fatigue of the triceps surae induced by calf-raise exercise. (C) 2010 Elsevier Ltd. All rights reserved.

    DOI

  • Twitch potentiation induced by stimulated and voluntary isometric contractions at various torque levels in human knee extensor muscles

    Miyamoto, N, Yanai, T, Kawakami, Y

    Muscle Nerve   43 ( 3 ) 360 - 366  2011.03  [Refereed]

     View Summary

    The purpose of this study was to compare the extent of twitch potentiation (TP) after stimulated or voluntary contractions at identical intensities for the human knee extensor muscles. Isometric knee extensions of 10 s. were performed at 20%, 40%, and 60% of maximal voluntary contraction (MVC) torque level, through percutaneous electrical stimulation of the quadriceps at 80 Hz or voluntary contraction. Twitch responses were evoked by stimulating the femoral nerve percutaneously with supramaximal intensity. The extent of TP after the stimulated contraction was greater than that after the voluntary contraction at the 20% MVC torque level, whereas a stimulated contraction induced a smaller extent of TP than did a voluntary contraction at contraction intensities higher than 40% MVC. We suggest that this contraction intensity dependence of differences in TP after stimulated and voluntary isometric conditioning contractions is responsible for differences in the recruitment pattern of motor units during the conditioning contractions. Muscle Nerve 43: 360-366, 2011

    DOI

  • Age-related, site-specific muscle loss in 1507 Japanese men and women aged 20 to 95 years

    Abe, T, Sakamaki, M, Yasuda, T, Bemben, M, G, Kondo, M, Kawakami, Y, Fukunaga, T

    J. Sports Sci. Med.   10 ( 1 ) 145 - 150  2011.03  [Refereed]

     View Summary

    We investigated the relationship between age and muscle size in both the appendicular and trunk regions of 1507 Japanese men and women aged 20 to 95 years. Seven hundred twenty-two men (young [aged 20-39 years], n = 211; middle-aged [aged 40-59 years], n = 347; and old [aged 6095 years], n = 164) and 785 women (young, n = 207; middle-aged, n = 341; and old, n = 237) were recruited for this cross-sectional study. Muscle thickness (MTH) and subcutaneous fat thickness (FTH) were measured by ultrasound at 8 sites on the anterior and posterior aspects of the body. MTH was expressed in terms relative to limb length (MTH/L) or height (MTH/Ht). Percent body fat was estimated from FTH, and fat-free mass (FFM) was calculated. In men, a graded decrease in FFM was found in all age groups. In women, FFM was similar in the young and middle-aged groups, but was lower in the oldest group. Age was significantly and inversely correlated with FFM in men (r = -0.358, p &lt; 0.01), but not in women (r = -0.08). On the other hand, age was strongly and inversely correlated with quadriceps MTH/L (men, r = -0.529; women, r = -0.489; both p &lt; 0.001) and abdomen MTH/Ht (men, r = -0.464; women, r = -0.446; both p &lt; 0.001) in both men and women, while there were only weak correlations between age and other lower limb and trunk sites. Our results indicated that sarcopenia is observed as a site-specific loss of skeletal muscle mass, especially for the quadriceps and abdominal muscles, in Japanese men and women aged 20 to 95 years.

  • 04生-25-口-07 筋の力発揮能力を一時的に高める方法としての筋電気刺激法の効果(04.運動生理学,一般研究発表抄録)

    宮本 直和, 福谷 充輝, 矢内 利政, 川上 泰雄

    日本体育学会大会予稿集   62   121 - 121  2011

    DOI CiNii J-GLOBAL

  • 04生-25-口-08 1回のトレーニングセッションにおける筋活動の部位差と長期トレーニングによる筋肥大の部位差の関係(04.運動生理学,一般研究発表抄録)

    若原 卓, 福谷 充輝, 川上 泰雄, 矢内 利政

    日本体育学会大会予稿集   62   121 - 121  2011

    DOI CiNii J-GLOBAL

  • 04生-25-口-04 膝関節角度が最大随意収縮中の腓腹筋内側頭の筋活動レベルに及ぼす影響 : Postactivation potentiationを利用しての検証(04.運動生理学,一般研究発表抄録)

    福谷 充輝, 江間 諒一, 宮本 直和, 金久 博昭, 矢内 利政, 川上 泰雄

    日本体育学会大会予稿集   62   120 - 120  2011

    DOI CiNii J-GLOBAL

  • 04生-25-口-06 反動動作を伴う跳躍中の神経筋活動および筋腱動態に1セッションの練習が及ぼす影響(04.運動生理学,一般研究発表抄録)

    平山 邦明, 矢内 利政, 金久 博昭, 福永 哲夫, 川上 泰雄

    日本体育学会大会予稿集   62   120 - 120  2011

    DOI CiNii J-GLOBAL

  • 05バ-25-ポ-01 中学生期における足関節 : 『てこ』としての特徴(05.バイオメカニクス,一般研究発表抄録)

    橋詰 賢, 岩沼 聡一朗, 川上 泰雄, 矢内 利政

    日本体育学会大会予稿集   62   137 - 137  2011

    DOI CiNii J-GLOBAL

  • 05バ-26-ポ-36 プロ野球投手におけるInternal Impingementのリスク(05.バイオメカニクス,一般研究発表抄録)

    矢内 利政, 近田 彰治, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   62   148 - 148  2011

    DOI CiNii J-GLOBAL

  • Size-strength relationships of the elbow flexors and extensors are not affected by age or gender

    Akagi, R, Takai, Y, Ohta, M, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Eur. J. Sport Sci.   11 ( 4 ) 277 - 282  2011  [Refereed]

     View Summary

    In the present study, we examined the relationships between muscle volume and joint torque for the elbow flexors and extensors in young and elderly individuals, with the aim of evaluating age effects on these relationships. The participants were 45 young (27 men and 18 women aged 20-37 years) and 51 elderly (19 men and 32 women aged 60-77 years) individuals. The joint torques developed during isometric maximal voluntary elbow flexion and extension were measured using a torque meter. The muscle volumes of the elbow flexors and extensors were determined by magnetic resonance imaging. For the elbow flexors, joint torque was significantly correlated with muscle volume in both young and elderly individuals (r=0.564-0.872). There were also significant correlations between muscle volume and joint torque for the elbow extensors in elderly men and women as well as in young men and women (r=0.715-0.826). None of the y-intercepts of the regression lines between muscle volume and joint torque were significantly different from zero. Furthermore, no significant age or gender effects on the joint torque per muscle volume of the elbow flexors and extensors were observed. The present results suggest that muscle volume is a main determinant of joint torque regardless of age and gender, for both muscle groups.

    DOI

  • Effect of postactivation potentiation on the maximal voluntary isokinetic concentric torque in humans

    Miyamoto, N, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Strength Cond. Res.   25 ( 1 ) 186 - 192  2011.01  [Refereed]

     View Summary

    Miyamoto, N, Kanehisa, H, Fukunaga, T, and Kawakami, Y. Effect of postactivation potentiation on the maximal voluntary isokinetic concentric torque in humans. J Strength Cond Res 25(1): 186-192, 2011-The purpose of this study was to examine whether postactivation potentiation (PAP) influences dynamic torque development in humans. Nine recreationally active men performed sets of 3 maximal isokinetic concentric plantar flexions at 180 degrees/second in the following sequence: before and immediately (5 seconds) after a 10-second maximal voluntary contraction (MVC) and then every 1 minute until the 5-minute point, followed by 1 more stimulation at the 10-minute point. Twitch responses were recorded before every set of 3 concentric contractions to examine whether the PAP exists. The twitch and concentric torques were potentiated at 0 through 5 minutes and 1 through 3 minutes post-MVC, respectively (p &lt; 0.05), whereas there was no significant difference in concentric torque in the control (without MVC) condition (p &gt; 0.05). For electromyographic signals during concentric contractions, muscle activity of the medial gastrocnemius was significantly depressed only immediately after the conditioning MVC (p &lt; 0.05). These results indicate that a brief maximal voluntary isometric contraction enhances voluntary dynamic performance through PAP, within proper recovery interval. From a practical point of view, in sports activities we suggest undertaking PAP through high-intensity contractions 1 to 3 minutes before voluntary ballistic or plyometric actions for improved performance.

    DOI

  • Longitudinal and transverse deformation of human Achilles tendon induced by isometric plantar flexion at different intensities

    Iwanuma, S, Akagi, R, Kurihara, T, Ikegawa, S, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Appl. Physiol.   110   1615 - 1621  2011  [Refereed]

    Authorship:Corresponding author

  • カーフレイズ運動中の腓腹筋およびヒラメ筋の筋腱動態の動作負荷依存性

    佐久間淳, 栗原俊之, 矢内利政, 金久博昭, 福永哲夫, 川上泰雄

    東京体育学研究   2   5 - 12  2011  [Refereed]

    J-GLOBAL

  • 活動後増強を生じさせるためのコンディショニング収縮の時間が最大随意短縮性足関節底屈トルクに与える影響

    福谷充輝, 宮本直和, 金久博昭, 川上泰雄, 矢内利政

    トレーニング科学   23   31 - 38  2011  [Refereed]

  • Ball arrival position in basketball free throw from performance level

    元安陽一, 栗原俊之, 勝亦陽一, 金久博昭, 倉石平, 川上泰雄, 福永哲夫, 矢内利政

    スポーツ科学研究   8 ( 8 ) 155 - 165  2011  [Refereed]

    CiNii

  • Triceps surae muscle-tendon unit length changes as a function of ankle joint angles and contraction levels: the effect of foot arch deformation

    Iwanuma, S, Akagi, R, Hashizume, S, Kanehisa, H, Yanai, T, Kawakami, Y

    J. Biomech.   44   2579 - 2583  2011  [Refereed]

    Authorship:Corresponding author

  • 座面に可動性のあるオフィスチェアでのデスクワーク時の骨盤の動きと体幹筋群の筋活動

    江間諒一, 川上泰雄

    スポーツ科学研究   8   320 - 330  2011  [Refereed]

    Authorship:Corresponding author

    J-GLOBAL

  • 運動機能の加齢変化

    川上泰雄

    内科   108 ( 6 ) 948 - 951  2011

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • 光学3次元人体形状計測法を用いた内臓脂肪断面積の評価

    設楽佳世, 矢内利政, 川上泰雄

    体力科学   59 ( 6 ) 706 - 706  2010.12

  • 安静立位時における骨盤傾斜角の3次元計測の試み

    石川早帆, 設楽佳世, 矢内利政, 川上泰雄

    体力科学   59 ( 6 ) 710 - 710  2010.12

    J-GLOBAL

  • 身体長軸方向の負荷に対する体幹筋の筋活動に関する研究

    丸山祐丞, 川上泰雄, 矢内利政

    体力科学   59 ( 6 ) 906 - 906  2010.12

    J-GLOBAL

  • Effect of countermovement on elbow joint extension power-load characteristics

    Miyamoto, N, Wakahara, T, Sugisaki, N, Murata, K, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Sports Sci.   28 ( 14 ) 1535 - 1542  2010.12  [Refereed]

    DOI PubMed

  • Influence of muscle anatomical cross-sectional area on the moment arm length of the triceps brachii muscle at the elbow joint

    Sugisaki, N, Wakahara, T, Miyamoto, N, Murata, K, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Biomech.   43 ( 14 ) 2844 - 2847  2010.10  [Refereed]

     View Summary

    The purpose of this study was to test the hypothesis that the musculotendon moment arm length is affected by the muscle anatomical cross-sectional area. The moment arm length of the triceps brachii (TB) muscle at 30 degrees, 50 degrees, 70,degrees 90 degrees, 110 degrees elbow flexion positions was measured in sagittal magnetic resonance images (MRI) of 18 subjects as the perpendicular distance between the center of the pulley of the humerus to the line through the center of the TB tendon. The moment arm increased as the elbow flexion angle decreased, from 1.74 +/- 0.13 cm at 110 degrees to 2.39 +/- 0.14 cm at 30 degrees. The maximal anatomical cross-sectional area of the TB muscle was significantly correlated with the moment arms at all joint positions (r=0.545-0.803, p &lt; 0.05). Furthermore, the circumference of the upper arm was also significantly correlated with the moment arms at all joint positions, except for 70 (r=0.504-0.702, p &lt; 0.05). These results indicate that the moment arm length of the TB muscle is affected by the muscle anatomical cross-sectional area. (C) 2010 Elsevier Ltd. All rights reserved.

    DOI

  • Shift in optimal joint angle of the ankle dorsiflexors following eccentric exercise

    Lee, H, -D, Kim, S, -J, Lee, D, -Y, Kurihara, T, Lee, Y, -S, Kawakami, Y

    Exp. Mechanics   50 ( 5 ) 661 - 666  2010.06  [Refereed]

     View Summary

    Exposure to unaccustomed eccentric exercise causes muscle damage. Popping sarcomere theory [1] has been proposed and assumed that eccentric contraction-induced muscle damage predominantly occurs at muscle length on the descending limb of the force-length relationship. This study investigated changes in the mechanical properties following maximum effort eccentric exercise at systematically different muscle lengths for the human ankle dorsiflexors. The results of this study showed that the eccentric exercise of the ankle dorsiflexors decreased the peak torque, shifted the optimal joint angle towards longer muscle length without changes in the level of muscle activation. However, no difference in the shift of the optimal ankle joint angle was observed between the groups that performed eccentric exercise at long muscle length (ECC_L) and at short muscle length (ECC_S). In conclusion, the muscle length at which the eccentric exercise was performed did not produce differential effects on the neuro-mechanical properties of in-vivo human ankle dorsiflexors, and thus the popping sarcomere theory might not be the sole mechanism to account for the eccentric contraction-induced optimal muscle length change.

    DOI

  • Development of an equation to predict muscle volume of elbow flexors for men and women with a wide range of age

    Akagi, R, Takai, Y, Kato, E, Wakahara, T, Ohta, M, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Eur. J. Appl. Physiol.   108 ( 4 ) 689 - 94  2010.03  [Refereed]  [International journal]

     View Summary

    The present study examined the age-related changes in muscle thickness (MT) and volume (MV) of elbow flexors and developed a prediction equation of the MV based on the MT applicable to men and women with a wide range of age. The MT and MV were determined from a single ultrasonographic image and multiple magnetic resonance imaging scans, respectively, in 72 men and 75 women aged 19-77 year. As a result of examining the age-MT and age-MV relationships by calculation of partial correlation coefficients with the control variable of gender, MV was decreased with aging whereas the corresponding decline in MT was not significant. The subjects were randomly separated into either a validation (38 men and 42 women) or a cross-validation (34 men and 33 women) group, and a multiple regression equation to estimate MV using not only MT but also upper arm length (L), age and gender as independent variables [MV (cm(3)) = 60.8 x MT (cm) + 6.48 x L (cm) - 0.709 x age (year) + 51.4 x gender (0 women, 1 men) - 187.4] was validated and cross-validated. Thus, the prediction equation for MV of elbow flexors newly developed was shown to be applicable to men and women with a wide range of age.

    DOI PubMed

  • 04生-3P-P19 日常生活動作時の筋活動水準と随意最大筋力との関係(04.運動生理学,一般研究発表抄録)

    高井洋平, 澤井史穂, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会大会予稿集   61 ( 0 ) 143 - 143  2010  [Refereed]

    DOI CiNii J-GLOBAL

  • 生体力学シミュレーション研究 骨格筋の有限要素シミュレーション

    小田俊明, 衣笠竜太, 川上泰雄, 片岡弘之, 山村直人, ALVES Luis, TEODOSIU Cristian, RAJENDRA Mayoran, 山本晃生, 横田秀夫, 高木周, 姫野龍太郎

    生体力学シミュレーション研究 理研シンポジウム 平成22年     51 - 60  2010

    J-GLOBAL

  • Variability of limb muscle size in young men

    Wakahara, T, Takeshita, K, Kato, E, Miyatani, M, Tanaka, N, I, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Am. J. Human Biol.   22 ( 1 ) 55 - 59  2010  [Refereed]

     View Summary

    The purpose of this study was to determine the interindividual variability of the upper and lower limb muscle size in young men. Subjects were 655 Japanese men aged 18-39 years. They were sedentary and mildly to highly active individuals, including college athletes of various sports. Muscle thicknesses at each of the anterior and posterior portions of the upper arm, thigh, and lower leg were measured using B-mode ultrasonography. Interindividual variability of muscle thickness was evaluated by coefficients of variation (CVs). The CVs of muscle thicknesses were found to be in the order of upper arm posterior (17.7%), thigh anterior (14.8%), thigh posterior (12.6%), upper arm anterior (12.2%), lower leg anterior (9.8%), and lower leg posterior (9.4%). The CVs were significantly different between each pair of measurement sites except for those of upper arm anterior-thigh posterior and lower leg anterior-posterior. These differences remain significant even when the muscle thicknesses were normalized to the segment length. The observed differences in the size variability can be interpreted as muscle-related differences in hypertrophic responsiveness to resistance training. The muscle-dependent size variability may be related to the differences in the fiber-type composition and/or muscle usage in daily life among examined muscle groups. © 2009 Wiley-Liss, Inc.

    DOI PubMed

  • Changes in ankle joint stiffness due to stretching: The role of tendon elongation of the gastrocnemius muscle

    Kato, E, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Eur. J. Sport Sci.   10 ( 2 ) 111 - 119  2010  [Refereed]

     View Summary

    The purpose of this study was to investigate changes in ankle joint stiffness and the associated changes in the gastrocnemius muscle and tendon due to static stretching. Seven healthy male participants lay supine with the hip and knee joints fully extended. The right ankle joint was rotated into dorsiflexion from a 30 degrees plantar flexed position and the torque measured by a dynamometer. The ankle joint was maintained in a dorsiflexed position for 20 min (static stretching of the calf muscles). We performed surface electromyography of the medial and lateral gastrocnemii, the soleus, and the tibialis anterior of the right leg to confirm no muscle activity throughout static stretching and the passive test (passive dorsiflexion). During static stretching, the ankle joint angle and elongation of the gastrocnemius were recorded by goniometry and ultrasonography, respectively. Tendon elongation of the gastrocnemius was calculated based on the changes in the ankle joint angle and muscle elongation. In addition, the relationships between passive torques and ankle joint angles, and elongation of muscle and tendon, were examined before and after static stretching. The ankle dorsiflexion angle and tendon elongation increased significantly by 10 min after the onset of static stretching, while there was no further increase in muscle length. In addition, ankle dorsiflexion angle and tendon elongation at an identical passive torque (30 N center dot m) increased significantly (from 24 +/- 7 degrees to 33 +/- 5 degrees and from 17 +/- 2 mm to 22 +/- 1 mm, respectively) after static stretching. However, muscle elongation was unchanged. In conclusion, the current results suggest that an increase in the ankle joint dorsiflexion angle due to static stretching is attributable to a change in tendon not muscle stiffness.

    DOI

  • Joint angle dependence of inter-muscle difference in postactivation potentiation

    Miyamoto, N, Mitsukawa, N, Sugisaki, N, Fukunaga, T, Kawakami, Y

    Muscle Nerve   41   519 - 523  2010  [Refereed]

  • Fatigue-induced changes in synergistic muscle force do not match tendon elongation

    Mitsukawa, N, Sugisaki, N, Miyamoto, N, Yanai, T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Biomech.   43   1632 - 1634  2010  [Refereed]

    Authorship:Corresponding author

  • 肘関節屈曲筋群および伸展筋群の直列サルコメア数の推定

    赤木亮太, 杉崎範英, 矢内利政, 福永哲夫, 川上泰雄

    東京体育学研究   1   33 - 36  2010  [Refereed]

    J-GLOBAL

  • ストレッチングが足関節背屈可動域に与える一過性の効果と長期的な効果の比較

    加藤えみか, 金久博昭, 福永哲夫, 矢内利政, 川上泰雄

    東京体育学研究   1   37 - 43  2010  [Refereed]

    J-GLOBAL

  • 等尺性足関節底屈トルク発揮に伴う足アーチの開裂および踵骨隆起の変位

    岩沼聡一朗, 赤木亮太, 栗原俊之, 福永哲夫, 川上泰雄

    東京体育学研究   1   59 - 63  2010  [Refereed]

    J-GLOBAL

  • 女性ダンサーの大腿部筋形態:大腿部筋横断面積に着目して

    石川早帆, 岩沼聡一朗, 川上泰雄

    東京体育学研究   1   83 - 86  2010  [Refereed]

    J-GLOBAL

  • 陸上競技選手の100-mスプリントタイムと外側広筋腱の力学的特性との関係

    小林海, 光川眞壽, 矢内利政, 福永哲夫, 金久博昭, 川上泰雄

    東京体育学研究   1   87 - 91  2010  [Refereed]

    J-GLOBAL

  • 腱スティフネス,筋力および筋活動が反動動作による機械的仕事量増強の個人差に与える影響

    平山邦明, 杉崎範英, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    体育学研究   55   33 - 43  2010  [Refereed]

  • 肘関節屈筋群の新たな筋横断面積指標の確立

    赤木亮太, 矢内利政, 金久博昭, 福永哲夫, 川上泰雄

    バイオメカニズム学会誌   20  2010  [Refereed]

    J-GLOBAL

  • Effect of counter-movement on elbow joint extension power-load characteristics

    Miyamoto, N, Wakahara, T, Sugisaki, N, Murata, K, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Sports Sci.   3   1 - 8  2010  [Refereed]

  • 股関節および膝関節角度が等尺性膝関節伸展トルクと大腿四頭筋の電気的活動に与える影響

    江間諒一, 若原卓, 金久博昭, 矢内利政, 川上泰雄

    スポーツ科学研究   7   109 - 118  2010  [Refereed]

    Authorship:Corresponding author

    J-GLOBAL

  • 高齢者の骨格筋の形態と機能

    川上泰雄

    Geriatric Medicine(老年医学)   48 ( 2 ) 227 - 230  2010

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • Muscle volume compared to cross-sectional area is more appropriate for evaluating muscle strength in young and elderly individuals.

    Akagi, R. Takai, Y, Ohta, M, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Age Aging   38 ( 5 ) 564 - 9  2009.09  [Refereed]  [International journal]

     View Summary

    OBJECTIVE: the present study examined which of muscle volume (MV) and cross-sectional area (CSA) is appropriate for evaluating the relation with elbow flexor muscle strength in young and elderly individuals. METHODS: the subjects were 52 young (20-34 year; 30 men and 22 women) and 51 elderly individuals (60-77 year, 19 men and 32 women). The MV and maximal anatomical CSA (ACSA) of elbow flexors were determined by magnetic resonance imaging. The torque developed during maximal voluntary contraction of isometric elbow joint flexion was converted to force by dividing it by the forearm length of each subject. RESULTS: torque was significantly correlated with MV in young and elderly individuals (r = 0.564-0.926). Similarly, force was also significantly correlated with ACSA in each of them (r = 0.637-0.906). However, the y-intercepts of the regression lines for the ACSA-force relationship in young men and women were significantly higher than zero. There was no age effect on torque per MV, whereas force per ACSA was significantly higher in young adults than in elderly individuals. CONCLUSION: for elbow flexors, MV compared to ACSA is appropriate for evaluating the size-strength relationship and the existence of age-related difference in muscle strength per size.

    DOI PubMed

  • DEVELOPMENT OF AN EQUATION FOR PREDICTING BODY SURFACE AREA BASED ON THREE-DIMENSIONAL PHOTONIC IMAGE SCANNING

    Kayo Shitara, Yohei Takai, Megumi Ohta, Taku Wakahara, Hiroaki Kanehisa, Tetsuo Fukunaga, Yasuo Kawakami

    JAPANESE JOURNAL OF PHYSICAL FITNESS AND SPORTS MEDICINE   58 ( 4 ) 463 - 474  2009.08  [Refereed]

     View Summary

    This study was conducted to examine the reliability of three-dimensional photonic image scanning (3DPS) for measuring body surface area (BSA), and formulate equations for predicting BSA based on 3DPS. The surface area (SA) of a cylinder with known SA and BSA of 7 males were repeatedly measured by 3DPS. BSA was determined by 3DPS for 122 subjects (25 similar to 76 yrs). BSA prediction equations for both genders were developed for the validation group (16 males and 45 females) using body height and mass as independent variables, and were cross-validated for the cross-validation group (16 males and 45 females). The standard error of measurement was 2.2cm(2) (0.16%). The coefficients of variation (CV) for repeated measurements of SA were less than 0.2%. The BSA of subjects did not differ significantly on any given day nor between days, with a CV of less than 1%. The coefficient of determination and standard error of estimation of the prediction equations were 0.98 and 183cm(2) (1.1%), respectively, for males and 0.98 and 204cm(2) (1.3%), respectively, for females. There was no significant difference between the predicted and measured values. In the cross-validation group, there was no significant difference between the predicted and measured values without systematic errors. These findings indicate that 3DPS is reliable for measuring BSA, and the formulated equations are valid and applicable to individuals within a wide age-range. (Jpn. J. Phys. Fitness Sports Med. 2009, 58 : 463 similar to 474)

    J-GLOBAL

  • Relationships between muscle strength and indices of muscle cross-sectional area determined during maximal voluntary contraction in middle-aged and elderly individuals.

    Akagi, R, Takai, Y, Kato, E, Fukuda, M, Wakahara, T, Ohta, M, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Strength Cond. Res.   23 ( 4 ) 1258 - 62  2009.07  [Refereed]  [International journal]

     View Summary

    The present study examined how muscle cross-sectional area (CSA) indices determined at rest and during maximal voluntary contraction (MVC) are related to muscle strength in middle-aged and elderly individuals (22 men and 36 women, 51-77 years). The muscle thickness (MT) of elbow flexors and circumference (C) at the level 60% distal to the upper arm was measured by ultrasonography and a measuring tape, respectively, both at rest and during isometric MVC of elbow flexion. The muscle strength (F) of elbow flexors was calculated by dividing the torque developed during MVC by the forearm length of each subject. The product of MT and C (MTxC) and the square of MT (MT) were defined as the muscle CSA indices. The F was significantly correlated with MTxC during MVC (r = 0.905, p < or = 0.001) and at rest (r = 0.778, p < or = 0.001), with the former relationship significantly stronger than the latter (p < or = 0.001). Similarly, F was significantly correlated with MT both during MVC (r = 0.896, p < or = 0.001) and at rest (r = 0.780, p < or = 0.001), and there was also a significant difference between the correlation coefficients (p < or = 0.01). These findings show that, in middle-aged and elderly individuals, muscle strength is more closely related to muscle CSA indices during MVC than at rest. It is concluded that the present muscle CSA indices taken during MVC enable easy and practical evaluation of the muscle strength per size of elbow flexors in middle-aged and elderly individuals.

    DOI PubMed

  • The influence of fascicle behavior on the lack of velocity dependence in eccentric joint torque in humans: in vivo observation

    Chino, K, Mitsukawa, N, Kobayashi, K, Miyoshi, Y, Oda, T, Kanehisa, H, Fukunaga, T, Fukashiro, S, Kawakami, Y

    J. Appl. Biomech.   25 ( 2 ) 111 - 118  2009.05  [Refereed]

     View Summary

    To investigate the relationship between fascicle behavior and joint torque, the fascicle behavior of the triceps surae during isometric and eccentric (30 and 60 deg/s) plantar flexion by maximal voluntary and submaximal electrical activation (MVA and SEA) was measured by real-time ultrasonography. Eccentric torque at 30 and 60 deg/s was significantly higher than isometric torque under SEA, but not under VIVA. However, fascicle length did not significantly differ between isometric and eccentric trials under either condition. Therefore, the difference in developed torque by VIVA and SEA cannot be explained by fascicle behavior. Under both MVA and SEA conditions, eccentric torque at 30 and 60 deg/s was equivalent. Similarly, fascicle lengthening velocities at 30 and 60deg/s did not show any significant difference. Such fascicle behavior can be attributed to the influence of tendinous tissue and pennation angle, and lead to a lack of increase in eccentric torque with increasing angular velocity.

  • Evidence for intermuscle difference in postactivation potentiation in the human triceps surae: a mechanomyographic study

    Miyamoto, N, Fukunaga, T, Kawakami, Y

    Muscle Nerve   39 ( 5 ) 703 - 706  2009.05  [Refereed]

     View Summary

    This study compared the postactivation potentiation of the medial gastrocnemius (MG) and soleus muscles by using mechanomyography (MMG). Twitch responses were evoked by stimulating the posterior tibial nerve with supramaximal intensity before and after a 10-s maximal voluntary plantar flexion, and potentiation of each muscle was evaluated by peak-to-peak amplitude of the MMG signal. The MG showed greater potentiation than the soleus, reflecting the reported fiber type composition of these muscles. This result points to the possibility that one can delineate contrasting responses of synergist muscles to postactivation potentiation by this method.

    DOI

  • 遅発性筋肉痛と運動形態の関連性

    栗原俊之, 川上泰雄, 宮本直和, 佐久間淳

    デサントスポーツ科学   30   52-61  2009

    J-GLOBAL

  • 視覚フィードバックを伴う最大随意収縮が筋活動および筋横断面積あたりの筋力に及ぼす影響

    福田誠, 赤木亮太, 金久博昭, 川上泰雄, 福永哲夫

    スポーツ科学研究   6   17 - 29  2009  [Refereed]

    J-GLOBAL

  • Sit-to-stand test to evaluate knee extensor muscle size and strength in the elderly: a novel approach.

    Takai, Y, Ohta, M, Akagi, R, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Physiol. Anthrop.   28 ( 3 ) 123 - 8  2009  [Refereed]  [International journal]

     View Summary

    The present study examined whether a sit-to-stand score can be related to the force-generating capacity of knee extensor muscles. Fifty-seven subjects (28 men, 63.0+/-7.8 yrs, and 29 women, 64.2+/-7.5 yrs, means+/-SDs) performed a 10-repeated sit-to-stand test as fast as possible, on a steel molded chair. The time taken (T(sit-stand)) was measured with a manual stopwatch. The leg length (L), defined as the distance from the great trochanter of the femur to the malleolus lateralis, was measured using a tape. A power index of the test (P(sit-stand)) was calculated by using the following equation: P(sit-stand)=(L-0.4) x body mass x g x 10/T(sit-stand). The cross-sectional area of the quadriceps femoris muscle (CSA(KE)) and the maximal voluntary isometric knee extension force (F(KE)) were measured using MRI and a static myometer, respectively. There was no significant correlation between T(sit-stand) and each of CSA(KE) and F(KE). On the other hand, the P(sit-stand) was highly correlated with CSA(KE) and F(KE), even after the influence of body mass and L was statistically eliminated. These results indicate that P(sit-stand), derived from three variables of body mass, leg length, and time taken for a sit-to-stand test, can be a useful index to assess the force-generating capacity of the knee extensor muscles of elderly individuals.

    PubMed

  • Fatigue-related changes in fascicle-tendon geometry over repeated contractions: difference between synergist muscles

    Mitsukawa, N, Sugisaki, N, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Muscle Nerve   40   395 - 401  2009  [Refereed]

    Authorship:Corresponding author

  • 段階的弾性圧迫ストッキングの着用が歩行中の足関節底屈筋群の血液量・筋活動および主観的運動強度に与える影響

    光川眞壽, 宮本直和, 平田浩祐, 利光徹哉, 川村明, 福永哲夫, 川上泰雄

    スポーツ科学研究   6   88 - 96  2009  [Refereed]

    Authorship:Corresponding author

    J-GLOBAL

  • 筋疲労を伴う動的足関節底屈運動中の下腿三頭筋の筋腱動態の変化

    佐久間淳, 栗原俊之, 矢内利政, 金久博昭, 川上泰雄

    スポーツ科学研究   6   97 - 110  2009  [Refereed]

    J-GLOBAL

  • スプリント走の加速局面における一流短距離選手のキネティクスに関する研究

    小林海, 土江寛裕, 松尾彰文, 彼末一之, 礒繁雄, 矢内利政, 金久博昭, 福永哲夫, 川上泰雄

    スポーツ科学研究   6   119 - 130  2009  [Refereed]

    J-GLOBAL

  • The relationship between the functions of knee extensor muscles and scores on the sit-to-stand in middle-aged and older individuals

    Yohei Takai, Megumi Ohta, Ryota Akagi, Hiroaki Kanehisa, Yasuo Kawakami, Tetsuo Fukunaga

    JOURNAL OF AGING AND PHYSICAL ACTIVITY   16   S202 - S203  2008.07

  • Effect of tendon mechanical properties on strain of triceps surae muscle-tendon unit under eccentric contraction

    Oda, T, Kato, E, Chino, K, Himeno, R, Kanehisa, H, Kawakami, Y

    Med. Sci. Sports Exerc.   40 ( 5 ) S296  2008.05  [Refereed]

    DOI

  • The relationship between passive ankle plantar flexion joint torque and gastrocnemius muscle and Achilles tendon stiffness: Implications for flexibility

    Kawakami, Y, Kanehisa, H, Fukunaga, T

    J. Orthop. Sports Phys. Ther.   38 ( 5 ) 269 - 276  2008.05  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    STUDY DESIGN: Experimental laboratory study.
    OBJECTIVES: We tested the hypothesis that the muscle fibers and the connective tendinous structures, combined in series, provide the resistance to passive joint movement at the ankle. We also determined the relative association between passive joint torque and each of these 2 elements.
    BACKGROUND: The reason for individual variation in joint flexibility or tightness is not clearly understood, but the influence of musculotendinous stiffness has been inferred.
    METHODS AND MEASURES: Each of the subjects (6 women and 6 men) was seated with the right knee extended and right ankle positioned at a 30 degrees, 20 degrees, 10 degrees, 0 degrees, -10 degrees, -20 degrees, and -30 degrees (0, neutral position, positive values reflecting plantar flexion) angle while passive plantar flexion torque was measured. The distal muscle-tendon junction of the medial gastrocnemius was visualized by ultrasonography, and its positional change was defined as muscle belly length change, The whole muscle-tendon unit length change was estimated from joint angle changes, from which Achilles tendon length change was estimated.
    RESULTS: Both the muscle belly and tendon were significantly elongated as the ankle was dorsiflexed (at 0 degrees the mean +/- SD muscle belly elongation was 10.3% +/- 1.8%, and the tendon elongation was 2.8% +/- 1.2%, of the initial length of their respective structures measured at 30 degrees of ankle plantar flexion), from which stiffness indices were determined both for muscle belly and tendon. The passive torque at 0 degrees, -10 degrees, -20 degrees, and -30 degrees was significantly correlated with the stiffness indices of the Achilles tendon (at 0 degrees, r(2) = 0.70 and 0.62 for overall and specific stiffness, respectively; P&lt;.05). A tendon stiffness index, separately obtained from tendon lengthening during maximal isometric contraction, was also correlated with passive ankle plantar flexion torque at 0 degrees, -10 degrees -20 degrees, and -30 degrees (at 0 degrees, r(2) = 0.76, P&lt;.05), The specific stiffness index of the muscle belly was correlated (r(2) = 0.47, P&lt;.05) with the passive ankle plantar flexion torque at 0 degrees, but its overall stiffness index was not (r(2) = 0.32, P&gt;.05).
    CONCLUSION: Results suggest that extensibility of the muscle-tendon unit of the Achilles tendon for the most part is related to passive ankle plantar flexion joint torque.

    DOI

  • Strain distribution within human triceps surae muscles during isometric contraction: in vivo study by Tagging MRI

    Toshiaki Oda, Ryuta Kinugasa, Mayoran Rajendra, Ryutaro Himeno, Hiroyuki Kataoka, Hideo Yokota, Akio Yamamoto, Hiroaki Kanehisa, Tetsuo Fukunaga, Yasuo Kawakami

    FASEB JOURNAL   22  2008.04

  • In vivo fascicle behavior of synergistic muscles in concentric and eccentric plantar flexions in humans

    Chino, K, Oda, T, Kurihara, T, Nagayoshi, T, Yoshikawa, K, Kanehisa, H, Fukunaga, T, Fukashiro, S, Kawakami, Y

    J. Electromyogr. Kinesiol.   18 ( 1 ) 79 - 88  2008.02  [Refereed]

    Authorship:Corresponding author

     View Summary

    Ultrasonography was used to directly measure in vivo fascicle behavior of the medial gastrocnemius (MG) and soleus (SOL) muscles while the subjects (n = 6 men) performed maximal voluntary concentric and eccentric plantar flexions at 60, 120, 180 and 240 deg/s. Fascicle shortening and lengthening velocities of MG, obtained from fascicle length changes over time, were significantly higher than those of SOL at +/- 120, +/- 180 and +240 deg/s, possibly reflecting physiological and mechanical differences between these muscles. On the other hand, the effective fascicle shortening and lengthening velocities, defined as the velocities in the longitudinal direction of muscle belly, were not significantly different between MG and SOL. This could be due to difference in fascicle architecture and/or the existence of mechanical linkages between these muscles. Moreover, when the contribution of tendinous tissues to muscle-tendon complex length change was determined from fascicle length, pennation angle, moment arm and joint angle, it accounted for approximately 50% in both concentric and eccentric trials, but showed considerable intra-subject variations. This result quantifiably demonstrates the importance of tendinous tissues in isokinetically controlled joint movements. (C) 2006 Elsevier Ltd. All rights reserved.

    DOI

  • 生体電気インピーダンス法を用いたセグメント別骨格筋量推定の可能性(運動生理学1,04.運動生理学,一般研究発表抄録)

    太田めぐみ, 緑川泰史, 高井洋平, 増尾善久, 坂本静男, 川上泰雄, 福永哲夫

    日本体育学会大会予稿集   59 ( 0 ) 128 - 128  2008  [Refereed]

    DOI CiNii J-GLOBAL

  • A30 Influence of different shock-absorbing capacities of running shoes on body kinetics and kinematics during running

    HIGURASHI Nao, SAKAGUCHI Masanori, KOBAYASHI Kai, MOTOYASU Yoichi, MARUYAMA Takeo, KAWAKAMI Yasuo

    The Proceedings of Joint Symposium: Symposium on Sports Engineering, Symposium on Human Dynamics   2008 ( 0 ) 152 - 156  2008

     View Summary

    The impact force which runners receive passively during running reaches approximately 1.5〜5.0 times the body weight. The joint movements of lower extremity have strategy which absorbs the impact force. In addition, shoes have an important role of absorbing the impact force. This study investigated the relationship between the impact force and joint movements wearing different shoes. Eight subjects ran at 3.5m/s wearing 3-types of shoes with different shock-absorbing capacities. Shoes with thicker outer-sole were defined as shoes with higher shock-absorbing. GRF, joint angle, joint angular velocity, sole angle which is angle between foot and ground at touch down, and time of maximum joint angular velocity were sampled and computed. Time of GRF first peak and loading rate were longer and smaller significantly and knee joint angle at touchdown tended to be smaller when runners wore shoes with higher shock-absorbing. It was suggested that shoes with higher shock-absorbing attenuated the impact to the body and influenced running motion.

    DOI CiNii J-GLOBAL

  • Elastic properties of human in vivo triceps brachii tendon

    Murata, K, Sugisaki, N, Miyamoto, N, Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   6   162 - 168  2008  [Refereed]

    DOI

  • In vivoヒト骨格筋の筋腱相互作用が発揮張力の立ち上がりに及ぼす影響

    小田俊明, 姫野龍太郎, 金久博昭, 福永哲夫, 川上泰雄

    バイオメカニズム   19  2008  [Refereed]

    J-GLOBAL

  • Muscle force per cross-sectional area is inversely related with pennation angle in strength trained athletes

    Ikegawa, S, Funato, K, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Strength Cond. Res.   22 ( 1 ) 128 - 131  2008.01  [Refereed]

     View Summary

    The present study aimed to examine the effect of pennation angle on the force per cross-sectional area for elbow extensor muscles in strength-trained athletes. A total of 52 male bodybuilders (n = 32) and Olympic weightlifters (n = 20) did maximal isometric elbow extension on an isokinetic dynamometer. Muscle cross-sectional area (CSA) and muscle-fiber pennation angle (PA) of the triceps brachii muscles were measured by ultrasonography. Bodybuilders had significantly greater isometric elbow extension force (F), CSA and PA than weightlifters. The ratio of force to CSA (F/CSA) of bodybuilders was significantly lower than that of weightlifters. A significant positive correlation was observed between CSA and PA in both groups (r = 0.832, P &lt; 0.001, and r = 0.682, P &lt; 0.001, for bodybuilders and weightlifters, respectively). The F/CSA was negatively correlated to PA both for bodybuilders (r = -0.408, P &lt; 0.05) and weightlifters (r = -0.465, P &lt; 0.05). Thus present study indicates that the larger pennation angle is associated with the lower force relative to muscle CSA in strength-trained athletes.

  • 間欠的足関節底屈運動中の筋疲労に収縮間インターバルが及ぼす影響

    下田学, 福永哲夫, 金久博昭, 川上泰雄

    体育学研究   53   87 - 97  2008  [Refereed]

    Authorship:Corresponding author

  • Stroke power consistency and 2000 m rowing performance in varsity rowers

    Shimoda, M, Higuchi, M, Fukunaga, T, Kawakami, Y

    Scand. J. Med. Sci. Sports   19   85 - 90  2008  [Refereed]

    Authorship:Corresponding author

  • 骨格筋の力学的特性

    川上泰雄

    整形外科リハビリテーション    2008

    Authorship:Lead author, Corresponding author

  • Establishing a new index of muscle cross-sectional area and its relationship with isometric muscle strength

    Akagi, R, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Strength Cond. Res.   22 ( 1 ) 82 - 87  2008.01  [Refereed]

     View Summary

    The present study aimed i) to establish an index of muscle cross-sectional area (CSA) based on muscle thickness and circumference through a comparison with muscle CSA determined by magnetic resonance imaging (MRI), and ii) to examine the relationships between muscle strength and the index determined at rest and during the maximal isometric contraction. The muscle CSA of elbow flexors at 60% of the upper arm length (CSA(60)) and the maximal CSA of elbow flexors (CSA(max)) were measured using MRI in 26 men and 8 women. The muscle thickness (MT) of elbow flexors and the circumference (C) of upper arm at 60% of the upper arm length were measured using ultrasonography and anthropometry, respectively, in 29 men and 9 women. The measurements of MT and C were performed in the resting (MTr and C-r) and contracted condition (MTm and C-m), where the subjects performed maximal voluntary contraction (MVC) of isometric elbow joint flexion. The torque developed during MVC was converted into the muscle force (F) of elbow flexors. The MTr X C-r was significantly correlated both with CSA(60) and CSA(max) (P &lt; 0.001). The F was significantly correlated with MTm X C-m (r = 0.847, P &lt; 0.001) and MTr X C-r (r = 0.839, P &lt; 0.001). However, stepwise multiple regression analysis selected only MTm X C-m as a significant contributor for estimating F. The present study indicates that MT X C reflects muscle CSA, and can be an index for assessing muscle CSA. In addition, the findings obtained here showed a possibility that MT X C during MVC is more closely related to F than that at rest.

  • 定期的な体操教室の実施が高齢者の身体諸機能に及ぼす影響

    加藤えみか, 奥原直樹, 福永哲夫, 川上泰雄

    スポーツ科学研究   5   10 - 18  2008  [Refereed]

    J-GLOBAL

  • 野球選手における投球スピードと年齢との関係

    勝亦陽一, 金久博昭, 川上泰雄, 福永哲夫

    スポーツ科学研究   5   224 - 234  2008  [Refereed]

    J-GLOBAL

  • Assessment of sprint running abilities using a resisted self-driven treadmill

    Tsuchie, H, Kobayashi, K, Kanehisa, H, Kawakami, Y, Iso, S, Fukunaga, T

    Int. J Sport Health Sci.   6   85 - 90  2008  [Refereed]

  • Effects of knee joint angle on the fascicle behavior of the gastrocnemius muscle during eccentric plantar flexions

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Electromyogr. Kinesiol.   19   980 - 987  2008  [Refereed]

  • Age and sex differences in the levels of muscular activities during daily physical actions

    Takai, Y, Sawai, S, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   6   169 - 181  2008  [Refereed]

  • Elastic behavior of human in vivo triceps brachii tendon

    Murata, K, Sugisaki, N, Miyamoto, N, Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   6   182 - 187  2008  [Refereed]

  • 発育に伴う柔軟性の変化

    川上泰雄

    子どもと発育発達   6 ( 2 ) 115 - 117  2008

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • 受動伸長時における下腿三頭筋の局所ひずみの大きさ・分布に腱膜が与える影響.

    小田俊明, 姫野龍太郎, 金久博昭, 加藤えみか, 福永哲夫, 川上泰雄

    東京体育学研究   2007   19 - 27  2007.11  [Refereed]

    J-GLOBAL

  • Estimation of strain and stress in human Achilles tendon tissue during jumping.

    小田俊明, 川上泰雄, 片岡弘之, 横田秀夫, 姫野龍太郎

    日本機械学会スポーツ工学シンポジウム・シンポジウムヒューマン・ダイナミクス講演論文集   2007   209 - 213  2007.11

    J-GLOBAL

  • In vivo behavior of muscle fascicles and tendinous tissues of human gastrocnemius and soleus muscles during twitch contraction

    Oda, T, Kanehisa, H, Chino, K, Kurihara, T, Nagayoshi, T, Fukunaga, T, Kawakami, Y

    J. Electromyogr. Kinesiol.   17 ( 5 ) 587 - 595  2007.10  [Refereed]

    Authorship:Corresponding author

     View Summary

    The present study investigated the differences between the human medial gastrocnemius (MG) and soleus (SOL) muscles in length changes of muscle fascicles and tendinous tissues during twitch contraction induced by an electrical nerve stimulus. Also, the time-course characteristics of twitch torque were related with changes in the length of muscle fascicles and tendinous tissues. No significant difference was observed between MG and SOL in contraction and half relaxation times of the changes in lengths and velocities of both muscle fascicles and tendinous tissues. The time-course of changes in twitch torque was nearly identical to that of the length of muscle fascicles and tendinous tissues. It was suggested that the behavior of MG and SOL during twitch contraction is practically similar in spite of their known physiological and architectural differences, and that the time-course of twitch torque is greatly influenced by the changes in the length of muscle fascicles and tendinous tissues. (c) 2006 Elsevier Ltd. All rights reserved.

    DOI

  • 受動伸長時における下腿三頭筋の局所ひずみの大きさ・分布に腱膜が与える影響

    小田俊明, 姫野龍太郎, 金久博昭, 加藤えみか, 福永哲夫, 川上泰雄

    東京体育学研究   2006   83  2007.02  [Refereed]

    J-GLOBAL

  • Fascicle behavior of medial gastrocnemius muscle in extended and flexed knee positions

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    J. Biomech.   40 ( 10 ) 2291 - 2298  2007  [Refereed]

     View Summary

    The present study tested the hypotheses that Achilles tendon forces during fast concentric actions do not differ between extended and flexed knee positions, and this phenomenon is attributable to the force-length characteristics and electromyograms (EMGs) of gastrocnemius muscle. Seven healthy men performed static and concentric plantarflexions at fully extended (K0) and 0.785 rad (45 degrees) Flexed (K45) knee positions with the maximal effort. In concentric actions, the angular velocities were set at 0.524 (slow) and 6.109 rad s(-1) (fast). Fascicle length of medial gastrocnemius (MG) was determined with ultrasonography. Surface EMGs of the MG were recorded luring each action. Achilles tendon force was calculated from the torque and moment arm of the tendon. Peak tendon forces in fast concentric actions were similar in KO and in K45, but those in static and slow concentric actions significantly (P &lt; 0.05) differed between :he two positions. When the tendon force peaked, the fascicle lengths in each action and fascicle velocities in both concentric actions were significantly (P&lt;0.05) greater in KO than in K45. The EMGs were significantly (P&lt;0.05) higher in KO than K45 during each action. The results suggest that (1) the difference in the tendon forces between the two positions can be explained by the force-length and -velocity Characteristics and the EMGs of the MG, and (2) the contribution of the MG to the tendon force in flexed knee positions is greater in concentric actions than expected from the results in static actions. (C) 2006 Elsevier Ltd. All rights reserved.

    DOI

  • 運動間のアイシングが骨格筋の循環動態および筋力に与える影響

    光川眞壽, 福永哲夫, 川上泰雄

    トレーニング科学   19 ( 1 )  2007  [Refereed]

    J-GLOBAL

  • In vivo behavior of muscle fascicles and tendinous tissues in human tibialis anterior muscle during twitch contraction

    Oda, T, Himeno, R, Hay, D. C, Chino, K, Kurihara, T, Nagayoshi T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    J. Biomech.   40 ( 14 ) 3114 - 3120  2007  [Refereed]

     View Summary

    In this study we investigated the time course of length and velocity of muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the tibialis anterior muscle were induced at 30 degrees, 10 degrees and -10 degrees plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ins delay of each onset, with a significant difference in half relaxation times at -10 degrees. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9N/mm for fascicles and 5.4 to 14.3N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. (c) 2007 Elsevier Ltd. All rights reserved.

    DOI

  • 年齢および野球経験の有無が投球速度と筋力との関係に及ぼす影響

    勝亦陽一, 金久博昭, 川上泰雄, 福永哲夫

    トレーニング科学   19   149 - 154  2007  [Refereed]

  • 短距離トップランナーの400m走中脚筋電図の記録

    五味宏生, 土江寛裕, 木村孝三, 小林海, 保原浩明, 村岡哲郎, 礒繁雄, 川上泰雄, 福永哲夫, 彼末一之

    スポーツ科学研究   4   10 - 17  2007  [Refereed]

    J-GLOBAL

  • ローイングのバイオメカニクス−艇速に影響を及ぼす力学的要因−

    下田学, 福永哲夫, 川上泰雄

    バイオメカニクス研究   11 ( 2 ) 102 - 112  2007  [Refereed]

    J-GLOBAL

  • 大学野球選手にみられる筋量および筋量分布の特徴が投球スピードに与える影響

    勝亦陽一, 高井洋平, 太田めぐみ, 佐久間淳, 川上泰雄, 福永哲夫

    スポーツ科学研究   4   10 - 17  2007  [Refereed]

    J-GLOBAL

  • Mapping activation levels of skeletal muscle in healthy volunteers: An MRI study

    Kinugasa, R, Kawakami, Y, Fukunaga, T

    J. Magn. Reson. Imaging   24 ( 6 ) 1420 - 1425  2006.12  [Refereed]

     View Summary

    Purpose: To use muscle functional MRI (mfMRI) to compare activation levels within and among triceps surae (TS) muscles.
    Materials and Methods: Seven healthy males performed five sets of 10 repetitions of a unilateral heel-raise exercise. T2-weighted images were obtained before and immediately after the exercise. Pixels that showed T2 greater than the mean + 1 SD of the region of interest (ROI) in pre-exercise images and lower than the mean + 1 SD of the ROI in post-exercise images were identified. The remaining T2 values in the post-exercise images were assigned to five categories indicated by color: red (highest level of activation), yellow, green, sky blue, and blue (lowest level of activation). The images were then used to construct three-dimensional (3D) images from which the volumes at each level of activation were determined.
    Results: Within each of the TS muscles the % activated volumes with low and moderate levels of activation were larger than those with a high level of activation (P &lt; 0.05). The % activated volumes with a high level of activation were larger in the medial gastrocnemius than the soleus (Sol; P &lt; 0.05). The Sol had a larger % activated volume with a low level of activation than the lateral gastrocnemius (P &lt; 0.05). Each activation level was nonuniformly distributed along the length within each TS muscle.
    Conclusion: There is substantial variation in the level of activation within and among the TS muscles; however. the activation level is mainly in the moderate to low range in all three muscles.

    DOI

  • Human skeletal muscle size and architecture: Variability and interdependence

    Kawakami, Y, Abe, T, Kanehisa, H, Fukunaga, T

    Am. J. Human Biol.   18 ( 6 ) 845 - 848  2006.11  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Seven hundred and eleven women and men (aged 3-94 years, including normal individuals and highly trained bodybuilders) were tested for the thickness and pennation angles of their triceps brachii (TB), vastus lateralis (VL), and gastrocnemius medialis (GM) muscles. The variations of muscle thickness and pennation angles were largest in TB (6-66 mm and 5-55 degrees), followed by VL (8-45 mm and 7-33 degrees) and GM (11-36mm and 12-33 degrees), and women showed smaller variations than men. These results suggest the existence of muscle- and gender-specificity in the variability of muscle dimensions. Significant positive correlations were observed between muscle thickness and pennation angles (r = 0.81, 0.61, and 0.56, for TB, VL, and GM, respectively), indicating that the size-dependence of the pennation angle is a general feature of pennate muscles.

    DOI

  • Quantitative assessment of skeletal muscle activation using muscle functional MRI

    Kinugasa, R, Kawakami, Y, Fukunaga, T

    Magn. Reson. Imaging   24 ( 5 ) 639 - 644  2006.06  [Refereed]

     View Summary

    The purpose of the present study is to determine whether muscle functional MRI (mfMRI) can be used to obtain three-dimensional (3-D) images useful for evaluating muscle activity, and if so, to measure the distribution of muscle activity within a medial gastrocnemius (MG) muscle. Seven men performed 5 sets of 10 repetitions of a calf-raise exercise with additional 15% of body-weight load. Magnetic resonance images were obtained before and immediately after the exercise. To threshold images, only those pixels showing transverse relaxation time (T2) greater than the mean+1 S.D. of the entire regions of interest (ROIs) in the preexercise image and T2 lower than the mean+1 S.D. of the entire ROIs in the postexercise image were identified. The survived pixels showing T2 are defined as active muscle. Those thresholded images were 3-D reconstructed, and this was used to determine area of active muscle along transverse, longitudinal and vertical axes. At the exercise level used in the present study, the percentage volume of activated muscle in the MG was 62.8 +/- 4.5%. There was a significant correlation between percentage volume of activated muscle and integrated electromyography (r=.78, P&lt;.05). Percentage areas of activated muscle were significantly larger in the medial than in the lateral region, in the anterior than in the posterior region and in the distal than in the proximal region (P&lt;.05). These results suggest that mfMRI can be used to evaluate the muscle activity and to determine intramuscular variations of activity within skeletal muscle. (C) 2006 Elsevier Inc. All rights reserved.

    DOI

  • New insights into in vivo human skeletal muscle function

    Kawakami, Y, Fukunaga, T

    Exerc. Sport Sci. Rev.   34 ( 1 ) 16 - 21  2006.01  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Approaches to understanding human muscle function through measuring in vivo muscle fiber behavior in humans are described briefly. Experimental results show the discrepancy between joint actions and muscle fiber behavior in many occasions, which complicates prediction of muscle mechanics from sole observations of joint actions. This is the result of muscle-tendon interaction during contraction, which is efficiently used during human movements.

  • ゴルフスイング中の筋活動およびキネティクス:プロゴルファーの事例研究

    川上泰雄, 井出敦夫, 野澤むつこ, 永吉俊彦, 小林海, 小田俊明, 千野謙太郎, 栗原俊之, 加藤えみか, 福永哲夫

    スポーツ科学研究   3   18 - 29  2006  [Refereed]

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • 投球速度と筋力および筋量の関係

    勝亦陽一, 長谷川伸, 川上泰雄, 福永哲夫

    スポーツ科学研究   3   1 - 7  2006  [Refereed]

    J-GLOBAL

  • ウォーキングにおけるバネの役割

    川上泰雄, 福永哲夫

    バイオメカニクス研究   10 ( 1 )  2006  [Refereed]

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • 科学の目でスポーツを楽しむ

    川上泰雄

    ワセダ・コム    2006

    Authorship:Lead author, Corresponding author

  • 筋活動における筋腱複合体のふるまい

    川上泰雄

    学術の動向   11 ( 10 ) 28 - 31  2006

    Authorship:Lead author, Corresponding author

  • 早稲田大学スポーツ科学部授業報告ー演習「身体運動のメカニズム」

    川上泰雄, 阪口正律, 清水美奈

    スポーツ科学研究   3   30 - 47  2006  [Refereed]

    Authorship:Corresponding author

    J-GLOBAL

  • 合気道競技の投技における「崩し」の方法: 隅落と引落を中心に

    佐藤忠之, 川上泰雄, 志々田文明

    スポーツ科学研究   3   69 - 77  2006  [Refereed]

  • Muscle activation and its distribution within human triceps surae muscles

    Kinugasa, R, Kawakami, Y, Fukunaga, T

    J. Appl. Physiol.   99 ( 3 ) 1149 - 1156  2005.09  [Refereed]

     View Summary

    The purposes of this study were 1) to quantify the volume of activated parts within a whole muscle and 2) to examine activated area distributions along the length of muscle. Seven male subjects performed five sets of 10 repetitions of a single-leg calf-raise exercise with the knee fully extended. Transverse relaxation time (T2)-weighted spin echo images were acquired before and immediately after the exercise. A range of pixels with a T2 greater than the mean + 1 SD of the region of interest (ROI) from the preexercise image and pixels with a T2 lower than the mean + SD of the ROI from the postexercise image were defined as "active" muscle. The active muscle images were three dimensionally reconstructed, from which the volume of the activated muscle was determined for individual triceps surae (TS) muscles. Our data indicate that similar to 46% of the medial gastrocnemius (MG) muscle was activated during the exercise, with activation of the lateral gastrocnemius (LG) and soleus (Sol) muscles being similar to 35%. In the MG, distal portions had a greater percentage area of activated muscle than the proximal portions (P &lt; 0.05), which was consistent with the results regarding electromyogram, activity. In contrast, regional activation differences were not observed in the LG and Sol. These findings suggest that the amounts of activated muscle and its distribution would be different among TS muscles.

    DOI

  • Modeling and simulating the deformation of human skeletal muscle based on anatomy and physiology

    Lemos, R. R, Rokne, J, Baranoski, V. G, Kawakami, Y, Kurihara, T

    Comp. Anim. Virtual Worlds   16 ( 3-4 ) 319 - 330  2005.07  [Refereed]

     View Summary

    This paper describes the modeling and simulation of the deformation of human skeletal muscle at different structural levels based on sound scientific principles, experimental evidence, and state-of-art muscle anatomy and physiology. The equations of a continuum model of a muscle with realistic architecture, including internal arrangement Of muscle fibers and passive structures, and deformation, including activation relations, was developed and solved with the finite element method. The continuum model is used as the basis of a strategy for controlling muscle deformation using activation relations. In order to demonstrate the functionality of the model, it was used to investigate force production and structural changes during contraction of the human tibialis anterior for maximally and submaximally activated muscle behavior. From a comparison with experimental data obtained from ultrasound imaging, we concluded that the modeling and simulation of the continuum based on physiologically meaningful parameters as described in the paper is both an excellent predictor of force production observations and of changes in internal geometry under various test conditions. It is therefore a valuable tool for controlling muscle deformation during movement. Copyright (c) 2005 John Wiley & Sons, Ltd.

    DOI

  • Muscle and tendon interaction during human movements

    Fukunaga, T, Kawakami, Y

    4th International Scientific Conference on Kinesiology, Proceedings Book     67 - 69  2005  [Refereed]

     View Summary

    Real-time ultrasonography enabled in vivo MTC scanning and promised a realistic determination of the interactions between muscle and tendon during human movements. The tendinous tissues were quite compliant, and the elastic property was different among muscles. Internal shortening of fascicle was caused by the tendon elasticity. During human movements such as jumping, walking and ankle extension-flexion exercise the muscle fiber contracted with nearly constant length, while the tendon performed stretch-shortening cycle. It is suggested that human MTC are designed to match muscle force generation and tendon elasticity for efficient movement performance.

  • 垂直跳びにおいて重りを持つことが跳躍動作に及ぼす影響

    金子 潤, 竹下香寿美, 川上泰雄, 福永哲夫

    スポーツ科学研究   2   63 - 71  2005

    J-GLOBAL

  • Study on the Application of Bio-Electrical Impedance Method for Estimating Tendon Elongation.

    Ohta M, Masuo Y, Kanehisa H, Kawakami Y, Fukunaga T

    Int J Sport Health Sci   3 ( Special Issue ) 296 - 303  2005

  • 第18回日本バイオメカニクス学会大会傍聴記

    千野謙太郎, 小田俊明, 永吉俊彦, 川上泰雄

    体育の科学   55   145 - 149  2005  [Refereed]

  • 筋厚と形態計測値の組み合わせによる筋形状指標の有効性

    赤木亮太, 東香寿美, 太田めぐみ, 高田佑輔, 川上泰雄, 福永哲夫

    スポーツ科学研究   2   1 - 8  2005  [Refereed]

    J-GLOBAL

  • Levels of muscle activities in unloaded sit-up and squat movements

    高井洋平, 杉崎範英, 竹下香寿美, 川上泰雄, 福永哲夫

    スポーツ科学研究   2 ( 2 ) 9 - 19  2005  [Refereed]

    CiNii J-GLOBAL

  • シングルスカルの艇速にストロークレートと漕手の発揮する力とパワーが及ぼす影響

    下田学, 福永哲夫, 川上泰雄

    スポーツ科学研究   2   97 - 106  2005  [Refereed]

    Authorship:Corresponding author

  • Surface mechanomyogram reflects length changes in fascicles of human skeletal muscles

    Yoshitake, Y, Kawakami, Y, Kanehisa, H, Fukunaga, T

    Int. J. Sport Health Sci.   3   280 - 285  2005  [Refereed]

  • Effects of age and gender on the power generation capabilities of lower limb muscles in the elderly

    Yanagiya, Y, Kanehisa, H, Tachi., M, Takeshita, K, Sugisaki, N, Wakahara, T, Murata, K, Takata, Y, Kawakami, Y, Fukunaga, T, Kuno, S

    Int. J. Sport Health Sci.    2005  [Refereed]

  • Effects of passive ankle and knee joint motions on the length of fascicle and tendon of the medial gastrocnemius muscle

    Wakahara, T, Ushiyama, J, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   3   75 - 82  2005  [Refereed]

  • Effects of gender on age-related changes in muscle thickness in the elderly

    Takeshita, K, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.    2005  [Refereed]

  • Behavior of fascicle and tendinous tissue of medial gastrocnemius muscle during rebound exercise of ankle joint

    Sugisaki, N, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   3   100 - 109  2005  [Refereed]

  • Behavior of aponeurosis and external tendon of the gastrocnemius muscle during dynamic plantar flexion exercise

    Sugisaki, N, Kanehisa, H, Kawakami, Y, Fukunaga, T

    Int. J. Sport Health Sci.   3   235 - 244  2005  [Refereed]

  • Critical power determination with ergometry rowing: relation to rowing performance

    Shimoda, M, Kawakami, Y

    Int. J. Sport Health Sci.   3   21 - 26  2005  [Refereed]

    Authorship:Corresponding author

  • In vivo length-force relationships of muscle fiber and muscle tendon complex in the tibialis anterior muscle

    Oda, T, Kanehisa, H, Chino, K, Kurihara, T, Nagayoshi T, Kato, E, Fukunaga, T, Kawakami, Y

    Int. J. Sport Health Sci.   3   245 - 252  2005  [Refereed]

  • Use of three-dimensional ultrasonography for the analysis of the fascile length of human gastrocnemius muscle during contractions

    Kurihara, T, Oda, T, Chino, K, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Int. J. Sport Health Sci.   3   226 - 234  2005  [Refereed]

  • The effects of strength training on muscle architecture in humans

    Kawakami, Y

    Int. J. Sport Health Sci.   3   208 - 217  2005  [Refereed]

    Authorship:Lead author, Corresponding author

  • Musculotendious Factors influencing difference in ankle joint flexibility between women and men

    Kato, E, Oda, T, Chino, K, Kurihara, T, Nagayoshi, T. Fukunaga, T, Kawakami, Y

    Int. J. Sport Health Sci.    2005  [Refereed]

  • 高齢者にみられる足関節可動域の性差(04.運動生理学,一般研究発表)

    川上泰雄, 小田俊明, 永吉俊彦, 久野譜也, 金久博昭, 福永哲夫

    Proceedings of the Congress of the Japanese Society of Physical Education   0 ( 55 ) 270  2004.09

    Authorship:Lead author

  • The accuracy of volume estimates using ultrasound muscle thickness measurements in different muscle groups

    Miyatani, M, Kanehisa, H, Ito, M, Kawakami, Y, Fukunaga, T

    Eur. J. Appl. Physiol.   91 ( 2-3 ) 264 - 272  2004.03  [Refereed]

     View Summary

    This study aimed to investigate the accuracy of estimating the volume of limb muscles (MV) using ultrasonographic muscle thickness (MT) measurements. The MT and MV of each of elbow flexors and extensors, knee extensors and ankle plantar flexors were determined from a single ultrasonographic image and multiple magnetic resonance imaging (MRI) scans, respectively, in 27 healthy men (23-40 years of age) who were allocated to validation (n=14) and cross-validation groups (n=13). In the validation group, simple and multiple regression equations using MT and a set of MT and limb length, respectively, as independent variables were derived to estimate the MV measured by MRI. However, only the multiple regression equations were cross-validated, and so the prediction equations with r(2) of 0.787-0.884 and the standard error of estimate of 22.1 cm(3) (7.3%) for the elbow flexors to 198.5 cm(3) (11.1%) for the knee extensors were developed using the pooled data. This approach did not induce significant systematic error in any muscle group, with no significant difference in the accuracy of estimating MV between muscle groups. In the multiple regression equations, the relative contribution of MT for predicting MV varied from 41.9% for the knee extensors to 70.4% for the elbow flexors. Thus, ultrasonographic MT measurement was a good predictor of MV when combined with limb length. For predicting MV, however, the unsuitability of a simple equation using MT only and the difference between muscle groups in the relative contribution of MT in multiple regression equations indicated a need for further research on the limb site selected and muscle analyzed for MT measurement.

    DOI

  • 筋肉と筋収縮のバイオメカニクス

    川上泰雄

    パリティ   19 ( 8 ) 6 - 10  2004

    Authorship:Lead author, Corresponding author

    J-GLOBAL

  • 中高齢者の筋特性

    川上泰雄, 金久博昭, 福永哲夫

    体育の科学   54 ( 3 ) 197 - 202  2004

    Authorship:Lead author

    J-GLOBAL

  • 刺激から関節トルク発揮に至るまでの人体筋の収縮様相

    小田俊明, 千野謙太郎, 栗原俊之, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    東京体育学研究   2004   57 - 60  2004  [Refereed]

    J-GLOBAL

  • ローイングパワーの安定性がボートの艇速に及ぼす効果−大学ボート選手を対象として−

    下田学, 川上泰雄

    トレーニング科学   16   33 - 40  2004  [Refereed]

    Authorship:Corresponding author

  • Effect of gender on mechanical power output during repeated bouts of maximal running in trained teenagers

    Yanagiya, T, Kanehisa, H, Kouzaki, M, Kawakami, Y, Fukunaga, T

    Int. J. Sports Med.   24 ( 4 ) 304 - 310  2003.05  [Refereed]

     View Summary

    Seven high school boys (16.4 +/- 0.5y, mean +/- SD) and 7 girls (16.4 +/- 0.5y), who specialized in track and field events, performed ten 5-s maximal sprint runs with an interval of 10s between each sprint on a non-motorized running ergometer. In each sprint, the mean mechanical power (MP) from the start until the belt velocity of the ergometer (i.e., running velocity) peaked was calculated. The boys showed significantly higher MP than the girls in all sprints. However, when MP was expressed as the ratio to the total volume of muscles located in the right lower limb (MP x MV-1), estimated using a bioelectrical impedance analysis, significant gender effect was limited to the values at the 1(st) and 2(nd) sprints. The decline of MP over the ten sprints, expressed as a relative value to that at the 1(st) sprint, was greater in boys (46.2 +/- 7.6%) than in girls (33.9 +/- 8.6%), and significantly correlated with MP x MV-1 at the 1(st) sprint (r = 0.568, p &lt; 0.05). However, no significant difference between the boys and girls Was found in the relative difference between NIP values at the 3(rd) and 10(th) sprints, where the gender difference in MP x MV-1 at every sprint was insignificant. The findings here indicate that, for trained teenage boys and girls, 1) significant gender difference in mechanical power developed during repeated bouts of maximal running exists only in the initial phase of the task, when the difference in the volume of the lower limb muscles is normalized, and 2) it may be a reason for a greater decline of mechanical power developed during the bout in boys compared to girls.

  • Resistance training during unweighting maintains muscle size and function in human calf

    Akima, H, Ushiyama, J, Kubo, J, Tonosaki, S, Itoh, M, Kawakami, Y, Fukuoka, H, Kanehisa, H, Fukunaga, T

    Med. Sci. Sports Exerc.   35 ( 4 ) 655 - 662  2003.04  [Refereed]

     View Summary

    Purpose: A 20-d 6degrees head-down tilt bed rest project was conducted to evaluate the effect of dynamic leg press and plantar flexion resistance training on muscle size and function in human plantar flexors (PF) throughout the prolonged bed rest. Methods: Twelve healthy men participated in this study and were divided two groups: resistance training (BR-Tr group: N=6, age: 23+/-2 yr, height: 170+/-3 cm, weight: 66+/-7 kg) and nontraining (BR-Cont group: N=6, age: 23+/-1 yr, height: 170+/-3 cm, weight: 67+/-6 kg) during the bed rest. Physiological cross-sectional area (PCSA) and peak torque of the PF muscle group was determined. Spin-spin relaxation times (T2) of the medial (MG) and lateral gastrocnemius (LG) and soleus (Sol) muscle was measured at rest and immediately after unilateral calf-raising exercise (5 sets of 10 reps). Results: PCSA of the PF muscle group did not show any significant change in BR-Tr group; however, for the BR-Cont group, PCSA decreased by 13% after bed rest (P&lt;0.05). There was no significant change in exercise-induced T2 change of the MG, LG, or Sol muscles between before and after the bed rest in BR-Tr group; however, in the BR-Cont group, significant increases in T2 were found in these three muscles after the bed rest (P&lt;0.05 to 0.01). Conclusion: We conclude that dynamic leg press and plantar flexion resistance training during bed rest maintains muscle size and function (torque and T2), and that this training could be useful for prevention of progressive muscle deconditioning during spaceflight.

    DOI

  • Fascicle arrangements of vastus lateralis and gastrocnemius muscles in highly trained soccer players and swimmers of both genders

    Kanehisa, H, Muraoka, Y, Kawakami, Y, Fukunaga, T

    Int. J. Sports Med.   24 ( 2 ) 90 - 95  2003.02  [Refereed]

     View Summary

    The thickness, fascicle angles of pennation, and fascicle length of the vastus lateralis (VL) and medial gastrocnemius (MG) muscles in highly trained soccer players and swimmers of both genders were determined from ulrasonograms to investigate whether the fascicle arrangements of the lower limb muscles in the athletes could be related to the requirements of the events, i.e., intensive muscular activities in the water versus on the ground. In comparisons between the two events, the soccer players tended to show shorter fascicles and greater fascicle angles, and the swimmers thicker muscles and longer fascicles, especially in VL. In both events, the males showed thicker muscles and greater fascicle angles than the females. In both VL and MG, the thickness, fascicle length and fascicle angle were related to each other in a right-angled triangle model, and so, most of the event-and/or gender-related differences observed in the fascicle angle depended on the difference in muscle thickness relative to fascicle length. The present data cannot answer the question of whether the athletes had muscles suited to their respective sports prior to beginning their sports or whether the muscles adapted specifically to the competitive and/or training styles. However, it might be assumed that the lower limb muscles for swimmers are suitable to perform rapid, powerful kick movements during competitive swims by having greater thickness and longer fascicle, i.e., priorities in both force production and shortening velocity, but those for soccer players do not show architectural profiles which can be related to intensive activity on the ground, except that the thickness values exceed the normal range.

  • 英文論文はこう書く−その2

    川上泰雄

    体育の科学   53 ( 5 ) 377 - 380  2003

    Authorship:Lead author

  • 英文論文はこう書く−その1

    川上泰雄

    体育の科学   53 ( 4 ) 285 - 290  2003

    Authorship:Lead author

  • 運動中の筋線維収縮動態

    川上泰雄

    バイオメカニズム学会誌   27 ( 2 ) 67 - 71  2003  [Refereed]

    Authorship:Lead author

    J-GLOBAL

  • 中高年齢者における足関節可動域の規定因子

    川上泰雄, 小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫, 久野譜也

    体力科学   52   149 - 156  2003  [Refereed]

    Authorship:Lead author

  • 下腿三頭筋の短縮性,伸張性運動中の筋線維動態

    千野謙太郎, 小田俊明, 栗原俊之, 永吉俊彦, 金久博昭, 深代千之, 福永哲夫, 川上泰雄

    バイオメカニクス研究   7 ( 3 ) 206 - 213  2003  [Refereed]

    J-GLOBAL

  • The relationships between ankle dorsiflexion torque and muscle size indices

    Nagayoshi, T, Kawakami, Y, Maeda, M, Maeda, Y, Hidaka, S, Ikeda, K, Maruyama, A

    Int. J. Sport Health Sci.   1   216 - 221  2003  [Refereed]

  • Non-invasive estimation of the joint torque of the vastus lateralis during pedaling based on tendon elongation

    Muraoka, T, Muramatsu, T, Tachi, M, Kawakami, Y, Kanehisa, H, Fukunaga, T

    Jpn. J. Biomech. Sports Exerc.   7   214 - 221  2003  [Refereed]

  • Effects of Achilles tendon path change on the myotendinous junction movement of the gastrocnemius muscle

    Muramatsu, T, Muraoka, T, Kawakami, Y, Fukashiro, S, Fukunaga, T

    Int. J. Sport Health Sci.   1   19 - 23  2003  [Refereed]

  • Effect of series elasticity on isokinetic torque-angle relationship in humans

    Kawakami, Y, Kubo, K, Kanehisa, H, Fukunaga, T

    Eur. J. Appl. Physiol.   87 ( 4-5 ) 381 - 387  2002.08  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    The influence of muscle series elasticity on the relationship between torque and joint angle during dynamic contractions was studied. The torque-angle relationship during the maximal isokinetic knee extension was determined for six male subjects (25-45 years) at 0.52, 1.05, 1.57, 2.09, 2.62, 3.49 rad/s. The knee joint angle at which peak torque was observed showed a systematic shift to more extended positions, i.e., the quadriceps muscle-tendon unit length became shorter as the velocity increased [from 1.01 (0.12) rad (0.52 rad/s) to 0.75 (0.14) rad (3.49 rad/s), mean (SD)]. The corresponding difference in muscle-tendon unit length between 0.52 and 3.49 rad/s, estimated from the angle shift at peak torque and the moment arm length change of the quadriceps muscles, was 9 (4) mm. The relationship between estimated changes in muscle-tendon unit length and muscle force of the vastus lateralis and intermedius (VLI) over the seven velocities (including isometric contraction, 0 rad/s) coincided with the load-elongation properties of the series elastic component of VLI, determined separately in vivo by ultrasonography when the same subjects performed a ramp isometric knee extension. The results suggest that the torque-angle relationship is affected by the interaction between contractile and elastic components, and that peak torque angle shift is attributable to the elongation of tendinous tissues as a function of force applied to them.

    DOI

  • Muscle and tendon interaction during human movements

    Fukunaga, T, Kawakami, Y, Kubo, K, Kanehisa, H

    Exerc. Sport Sci. Rev.   30 ( 3 ) 106 - 110  2002.07  [Refereed]

     View Summary

    Muscle and tendon interaction was estimated in vivo by real-time ultrasonography. Differences between muscles in internal muscle-fiber shortening during isometric actions are due to the elastic properties of tendon. Compliant human tendons allow muscles to contract isometrically during many human movements for efficient force generation.

  • Effects of equivolume isometric training programs comprising medium or high resistance on muscle size and strength

    Kanehisa, H., Nagareda, H., Kawakami, Y., Akima, H., Masani, K., Kouzaki, M., Fukunaga, T.

    Eur. J. Appl. Physiol.   87 ( 2 ) 112 - 119  2002.06  [Refereed]

     View Summary

    Isometric unilateral elbow extension training was conducted for 10 weeks (3 times per week) on 12 young adult men to investigate the effects of equivolume exercise programs with different combinations of intensity and duration on the morphological and functional aspects of the triceps brachii muscle. One group of 6 subjects trained by developing maximal voluntary contraction (MVC) for 6 s per set with, 12 sets per session (100%G), while the other group of 15 subjects trained at 60% of MVC for 30 s per set with 4 sets per session (60%G). Training significantly increased the muscle volume (V-m), fascicle pennation angle of the triceps brachii, and torque output during concentric and eccentric elbow extensions at three constant velocities of 0.52, 1.57, and 3.14 rad.s(-1) as well as under the training condition, with no significant differences in the relative gains between the two programs. However, 100%G showed significantly greater V-m than 60%G after training, when V-m before training was normalized. Thus, only 60%G significantly increased the ratio of torque to V-m developed in the eccentric actions at the three velocities and concentric action at 1.57 rad.s(-1). The present results indicate that isometric training programs of medium resistance/long duration and high resistance/short duration produce different effects on V-m, and dynamic strength relative to V-m even if the training volume is equalized between the two protocols.

    DOI

  • In vivo muscle fibre behaviour during counter-movement exercise in humans reveals a significant role for tendon elasticity

    Kawakami, Y, Muraoka, T, Ito, S, Kanehisa, H, Fukunaga, T

    J. Physiol.   540 ( 2 ) 635 - 646  2002.04  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Six men performed a single ankle plantar flexion exercise in the supine position with the maximal effort with counter movement (CM, plantar flexion preceded by dorsiflexion) and without counter movement (NoCM, plantar flexion only) produced by a sliding table that controlled applied load to the ankle (40% of the maximal voluntary force). The reaction force at the foot and ankle joint angle were measured using a force plate and a goniometer, respectively. From real-time ultrasonography of the gastrocnemius medialis muscle during the movement, the fascicle length was determined. The estimated peakforce, average power, and work at the Achilles' tendon during the plantar flexion phase in CM were significantly greater than those in NoCM. In CM, in the dorsiflexion phase, fascicle length initially increased with little electromyographic activity, then remained constant while the whole muscle-tendon unit lengthened, before decreasing in the final plantar flexion phase. In NoCM, fascicle length decreased throughout the movement and the fascicle length at the onset of movement was longer than that of the corresponding phase in CM. It was concluded that during CM muscle fibres optimally work almost isometrically, by leaving the task of storing and releasing elastic energy for enhancing exercise performance to the tendon.

  • Superficial aponeurosis of human gastrocnemius is elongated during contraction: implications for modeling muscle-tendon unit

    Muramatsu, T, Muraoka, T, Kawakami, Y, Fukunaga, T

    J. Biomech.   35 ( 2 ) 217 - 223  2002.02  [Refereed]

     View Summary

    Two questions were addressed in this study: (1) how much strain of the superficial aponeurosis of the human medial gastrocnemius muscle (MG) was obtained during voluntary isometric contractions in vivo, (2) whether there existed inhomogeneity of the strain along the superficial aponeurosis. Seven male subjects, whose knees were extended and ankles were flexed at right angle, performed isometric plantar flexion while elongation of superficial aponeurosis of MG was determined from the movements of the intersections made by the superficial aponeurosis and fascicles using ultrasonography. The strain of the superficial aponeurosis at the maximum voluntary contraction, estimated from the elongation and length data, was 5.6 +/- 1.2%. There was no significant difference in strain between the proximal and distal parts of the superficial aponeurosis. Based on the present result and that of our previous study for the same subjects (J. Appl. Physiol 90 (2001) 1671), a model was formulated for a contracting uni-pennate muscle-tendon unit. This model, which could be applied to isometric contractions at other angles and therefore of wide use, showed that similar strain between superficial and deep aponeuroses of MG contributed to homogeneous fascicle length change within MG during contractions. These findings would contribute to clarifying the functions of the superficial aponeurosis and the effects of the superficial aponeurosis elongation on the whole muscle behavior. (C) 2002 Elsevier Science Ltd. All rights reserved.

  • Measurement of viscoelastic properties of tendon structures in vivo

    Kubo, K, Kawakami, Y, Kanehisa, H, Fukunaga, T

    Scand. J. Med. Sci. Sports   12 ( 1 ) 3 - 8  2002.02  [Refereed]

     View Summary

    The purpose of this study was to investigate the viscoelastic properties of tendon structures in humans. Elongation of the tendon and aponeurosis of medial gastrocnemius muscle (MG) was directly measured by ultrasonography, while subjects (n=19) performed ramp isometric plantar flexion up to the voluntary maximum, followed by a ramp relaxation. The relationship between tendon elongation (L) and estimated muscle force (Fm) was fitted to a linear regression, the slope of which was defined as compliance of the tendon structures. The hysteresis was calculated as the ratio of the area within the L-Fm loop (elastic energy dissipated) to the area beneath the load portion of the curve (elastic energy input). The resulting L-Fm relationship was non-linear in form, as previously reported on animal and human tendons in vitro. The mean compliance was 4.5+/-1.1 . 10(-2) mm/N. However, there was a considerable inter-subject variability (2.9 to 7.2 . 10(-2) mm/N). The Young's modulus, i.e., the slope of the stress-strain curve, was 280 MPa, which tended to be lower than the previously reported values for human tendons. It was also found that the strain of the tendon structures was homogeneously distributed along their length. The mean hysteresis (energy dissipation) was 22.2+/-8.8%. However, again there was a considerable inter-subject variability (9.7 to 37.2%). The present results indicated that the tendon structures of human MG were considerably compliant and their hysteresis was in accordance with previously reported values.

  • In vivo mechanical properties of proximal and distal aponeuroses in human tibialis anterior muscle

    Muramatsu, T, Muraoka, T, Takeshita, D, Kawakami, Y, Fukunaga, T

    Cells Tissues Organs   170 ( 2-3 ) 162 - 9  2002  [Refereed]

    DOI

  • 骨格筋トレーニングによる筋のマクロ的変化

    川上泰雄

    バイオメカニクス研究   6 ( 3 ) 220 - 226  2002

    Authorship:Lead author

    J-GLOBAL

  • アキレス腱モーメントアームの新たな推定法の提案

    川上泰雄, 中井敬子, 小田俊明, 千野謙太郎, 栗原俊之, 福永哲夫

    東京体育学研究   2002   41 - 45  2002  [Refereed]

    Authorship:Lead author

    J-GLOBAL

  • 足関節における柔軟性と下腿三頭筋の機能的・形態的特性との関係

    小田俊明, 千野謙太郎, 栗原俊之, 川上泰雄, 金久博昭, 福永哲夫

    トレーニング科学   13   157 - 166  2002  [Refereed]

  • Length change of human gastrocnemius aponeurosis and tendon during passive joint motion

    Muraoka, T, Muramatsu, T, Takeshita, D, Kawakami, Y, Fukunaga, T

    Cells Tissues Organs   171 ( 4 ) 260 - 268  2002  [Refereed]

     View Summary

    The extent of elongation and slackness of aponeurosis and tendon, and muscle fiber length of human medial gastrocnemius muscle are determined in vivo using ultrasonography. The ankle joint is passively moved at 50/s within the joint range of -36 to 7degrees (0degrees = neutral anatomic position; positive values for dorsiflexion) by a dynamometer while the length change of the aponeurosis and tendon is determined using ultrasonography (n = 8 men), Strain is calculated as the length change relative to the reference length of aponeurosis and tendon when the passive joint moment is 0. Elongation (positive strain Accepted after revision: February 10, 2002 values) of aponeurosis and tendon at 7degrees are 2.1 +/- 1.1 and 2.4 +/- 1.0%, respectively. The extent of slackness (negative strain values) of aponeurosis and tendon at -36degrees are -1.8 +/- 1.1 and -3.5 +/- 1.6%, respectively, and there is a significant difference between them (p &lt; 0.05). This may be related to the existence of muscle fibers that attach to the aponeurosis over its whole length and do not allow it to fold. The results indicate that the length change of aponeurosis and tendon of medial gastrocnemius muscle occurs over the range of ankle joint positions even during passive joint motions. Copyright (C) 2002 S. Karger AG, Basel.

  • In vivo determination of fascicle curvature in contracting human skeletal muscles

    Muramatsu, T, Muraoka, T, Shibayama, A, Kawakami, Y, Fukunaga, T

    J. Appl. Physiol.   92 ( 1 ) 129 - 134  2002.01  [Refereed]

     View Summary

    Fascicle curvature of human medial gastrocnemius muscle (MG) was determined in vivo by ultrasonography during isometric contractions at three (distal, central, and proximal) locations (n=7) and at three ankle angles (n=7). The curvature significantly (P&lt;0.05) increased from rest to maximum voluntary contraction (MVC) (0.4-5.2 m(-1)). In addition, the curvature at MVC became larger in the order dorsiflexed, neutral, plantar flexed (P&lt;0.05). Thus both contraction levels and muscle length affected the curvature. Intramuscular differences in neither the curvature nor the fascicle length were found. The direction of curving was consistent along the muscle: fascicles were concave in the proximal side. Fascicle length estimated from the pennation angle and muscle thickness, under the assumption that the fascicle was straight, was underestimated by similar to6%. In addition, the curvature was significantly correlated to pennation angle and muscle thickness. These findings are particularly important for understanding the mechanical functions of human skeletal muscle in vivo.

  • Intramuscular variability of the architecture in human medial gastrocnemius muscle in vivo and its functional implications

    Muramatsu, T, Muraoka, T, Kawakami, Y, Fukunaga, T

    Adv. Exerc. Sports Physiol.   8   17 - 21  2002  [Refereed]

  • Mechanical properties of tendon and aponeurosis of human gastrocnemius muscle in vivo

    Muramatsu, T, Muraoka, T, Takeshita, D, Kawakami, Y, Hirano, Y, Fukunaga, T

    J. Appl. Physiol.   90 ( 5 ) 1671 - 1678  2001  [Refereed]

  • ボート競技の競技力向上を目的とした艇の力学量測定システムの開発

    川上泰雄, 下田学, 福永哲夫

    トレーニング科学   13   21 - 30  2001  [Refereed]

    Authorship:Lead author

  • Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise

    Kawakami, Y, Akima, H, Kubo, K, Muraoka, Y, Hasegawa, H, Kouzaki, M, Imai, M, Suzuki, Y, Gunji, A, Kanehisa, H, Fukunaga, T

    Eur. J. Appl. Physiol.   84 ( 1-2 ) 7 - 12  2001.01  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Nine healthy men carried out head-down bed rest (BR) for 20 days. Five subjects (TR) performed isometric, bilateral leg extension exercise every day, while the other four (NT) did not. Before and after BR, maximal isometric knee extension force was measured. Neural activation was assessed using a supramaximal twitch interpolated over voluntary contraction. From a series cross-sectional magnetic resonance imaging scans of the thigh, physiological cross-sectional areas (PCSA) of the quadriceps muscles were estimated (uncorrected PCSA, volume/estimated fibre length). Decrease in mean muscle force after BR was greater in NT [-10.9 (SD 6.9)%, P &lt; 0.05] than in TR [0.5 (SD 7.9)%, not significant]. Neural activation did not differ between the two groups before BR, but after BR NT showed smaller activation levels. Pennation angles of the vastus lateralis muscle, determined by ultrasonography, showed no significant changes in either group. The PCSA decreased in NT by -7.8 (SD 0.8)% (P &lt; 0.05) while in TR PCSA showed only an insignificant tendency to decrease [-3.8 (SD 3.8)%]. Changes in force were related more to changes in neural activation levels than to those in PCSA. The results suggest that reduction of muscle strength by BR is affected by a decreased ability to activate motor units, and that the exercise used in the present experiment is effective as a countermeasure.

  • Interaction between series compliance and sarcomere kinetics determines internal sarcomere shortening during fixed-end contraction

    Kawakami, Y, Lieber, R. L

    J. Biomech.   33 ( 10 ) 1249 - 1255  2000.10  [Refereed]

    Authorship:Lead author

     View Summary

    The interaction between contractile force and in-series compliance was investigated for the intact skeletal muscle-tendon unit (MTU) of Rana pipiens semitendinosus muscles during fixed-end contraction. It was hypothesized that internal sarcomere shortening is a function of the length-force characteristics of contractile and series elastic components. The MTUs (n = 18) were dissected, and, while submerged in Ringer's solution, muscles were activated at nine muscle lengths(-2 to +6 mm relative to optimal length in 1 mm intervals), while measuring muscle force and sarcomere length (SL) by laser diffraction. The MTU was clamped either at the bone (n = 6), or at the proximal and distal ends of the aponeuroses (n = 6). Muscle fibers were also trimmed along with aponeuroses down to 5-20 fibers and identical measurements were performed (n = 6). The magnitude of shortening decreased as MTU length increased. The magnitude of shortening ranged from -0.08 to 0.3 mu m, and there was no significant difference between Delta SL as a function of clamp location. When aponeuroses were trimmed, sarcomere shortening was not observed at L-0 and longer. These results suggest that the aponeurosis is the major contributor to in-series compliance. Results also support our hypothesis but there also appear to be other factors affecting internal sarcomere shortening. The functional consequence of internal sarcomere shortening as a function of sarcomere length was to skew the muscle length-tension relationship to longer sarcomere lengths. (C) 2000 Elsevier Science Ltd. All rights reserved.

  • Fatigue responses of human triceps surae muscles during repetitive maximal isometric contractions

    Kawakami, Y, Amemiya, K, Kanehisa, H, Ikegawa, S, Fukunaga, T

    J. Appl. Physiol.   88 ( 6 ) 1969 - 1975  2000.06  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Nine healthy men (22-45 yr) completed 100 repetitive maximal isometric contractions of the ankle plantar flexor muscles in two knee positions of full extension (K0) and flexion at 90 degrees (K90), positions that varied the contribution of the gastrocnemii. Electromyographic activity was recorded from the medial and lateral gastrocnemii and soleus muscles by using surface electrodes. Plantar flexion torque in K0 was greater and decreased more rapidly than in K90. The electromyographic amplitude decreased over time, and there were no significant differences between muscles and knee joint positions. The level of voluntary effort, assessed by a supramaximal electrical stimulation during every 10th contraction, decreased from 96 to 70% (P &lt; 0.05) with no difference between K0 and K90. It was suggested that a decrease in plantar flexion torque was attributable to both central and peripheral fatigue and that greater fatigability in K0 than in K90 would result from a greater contribution and hence more pronounced fatigue of the gastrocnemius muscle. Further support for this possibility was provided from changes in twitch torque.

  • Architecture of contracting human muscles and its functional significance

    Kawakami, Y, Ichinose, Y, Kubo, K, Ito, M, Imai, M, Fukunaga, T

    J. Appl. Biomech.   16 ( 1 ) 88 - 97  2000.02  [Refereed]

    Authorship:Lead author

     View Summary

    This paper reviews three of our recent studies on human muscle architecture in vivo. 1. Hypertrophic changes: From B-mode ultrasonograms, pennation angles and thickness of triceps brachii were determined for normal subjects and highly-trained bodybuilders. There was a significant correlation between muscle thickness and pennation angles. It was confirmed that hypertrophy was accompanied by an increase in pennation angles. 2. Variation of fascicle architecture: Fascicle lengths and pennation angles were obtained from different positions in the gastrocnemius muscle while the subjects relaxed and performed isometric planter flexion. The fascicle length was uniform throughout the muscle and shortened by contraction (30-34% at 50% of the maximal force). On the other hand, pennation angles differed among positions and increased by contraction. The muscle thickness did not change by contraction. Pennation angles were significantly correlated with muscle thickness within muscle. 3. Joint position-fascicle length relationships: Ultrasonic images of the gastrocnemius and soleus muscles were obtained while the subject performed maximal isometric plantarflexion at various joint positions, from which fascicle lengths and angles were determined. The length-force relationship of each muscle was estimated. It was suggested that human muscle architecture has an ability to make substantial changes to adapt to environmental conditions.

  • Specificity and plasticity of skeletal muscle architecture

    Kawakami, Y, Fukunaga, T

    J. Appl. Physiol.   16 ( 1 ) 68 - 69  2000.02  [Refereed]

    Authorship:Lead author

  • In vivo dynamics of human medial gastrocnemius muscle-tendon complex during stretch-shortening cycle exercise

    Kubo, K, Kanehisa, H, Takeshita, D, Kawakami, Y, Fukashiro, S, Fukunaga, T

    Acta Physiol. Scand.   170 ( 2 ) 127 - 135  2000  [Refereed]

    DOI

  • Changes in muscle size and architecture following 20 days of bed rest

    Kawakami, Y, Muraoka, Y, Kubo, K, Suzuki, Y, Fukunaga, T

    J. Gravitat. Physiol.   7   53 - 60  2000  [Refereed]

    Authorship:Lead author, Corresponding author

  • Application of fuzzy modeling to rowing motion analysis

    Tachibana, K, Furuhashi, T, Shimoda, M, Kawakami, Y, Fukunaga, T

    Proceedings of the IEEE International Conference on Systems, Man and Cybernetics   6   VI190 - VI195  1999  [Refereed]

  • Architectural and functional features of human triceps surae muscles during contraction

    Kawakami, Y, Ichinose, Y, Fukunaga, T

    J. Appl. Physiol.   85 ( 2 ) 398 - 404  1998.08  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Architectural properties of the triceps surae muscles were determined in vivo for six men. The ankle was positioned at 15 degrees dorsiflexion (-15 degrees) and 0, 15, and 30 degrees plantar flexion, with the knee set at 0, 45, and 90 degrees. At each position, longitudinal ultrasonic images of the medial (MG) and lateral (LG) gastrocnemius and soleus (Sol) muscles were obtained while the subject was relaxed (passive) and performed maximal isometric plantar flexion (active), from which fascicle lengths and angles with respect to the aponeuroses were determined. In the passive condition, fascicle lengths changed from 59, 65, and 43 mm (knee, 0 degrees; ankle, -15 degrees) to 32, 41, and 30 mm (knee, 90 degrees ankle, 30 degrees) for MG, LG, and Sol, respectively. Fascicle shortening by contraction was more pronounced at longer fascicle lengths. MG had greatest fascicle angles, ranging from 22 to 67 degrees, and was in a very disadvantageous condition when the knee was flexed at 90 degrees, irrespective of ankle positions. Different lengths and angles of fascicles, and their changes by contraction, might be related to differences in force-producing capabilities of the muscles and elastic characteristics of tendons and aponeuroses.

  • Bilateral deficit in plantar flexion: relation to knee joint position, muscle activation, and reflex excitability

    Kawakami, Y, Sale, D. G, MacDougall, J. D, Moroz, J. S

    Eur. J. Appl. Physiol.   77 ( 3 ) 212 - 216  1998.02  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Six male subjects made maximal isometric plantar flexions unilaterally (UL and bilaterally (BL. with the knee joint angle positioned at 90 degrees and 0 degrees (full extension) and the ankle joint kept at 90 degrees. Plantar flexion torque and electromyogram (EMG) of the lateral gastrocnemius (LG) and the soleus (Sol) muscles were recorded. There was a deficit in torque in BL compared to UL (P &lt; 0.05), and the deficit was greater when the knee was extended than when bent to 90 degrees (13.9% vs 6.6%). The integrated EMG (IEMG) of UL and BL did not differ when the knee was at 90 degrees. On the other hand, when the knee was extended IEMG of LG was smaller for BL than for UL, suggesting that the larger bilateral deficit when the knee was extended was due to a reduced activity of the LG motor units. In addition, the H-reflex recorded from Sol when the contralateral leg was performing a maximal unilateral plantarflexion was reduced. This would indicate that the force deficit was associated with a reduction of motoneuron excitability.

  • Determination of fascicle length and pennation in a contracting human muscle in vivo

    Fukunaga, T, Ichinose, Y, Ito, M, Kawakami, Y, Fukashiro, S

    J. Appl. Physiol.   82 ( 1 ) 354 - 358  1997.01  [Refereed]

     View Summary

    We have developed a technique to determine fascicle length in human vastus lateralis muscle in vivo by using ultrasonography. When the subjects had the knee fully extended passively from a position of 110 degrees flexion (relaxed condition), the fascicle length decreased from 133 to 97 mm on average. During static contractions at 10% of maximal voluntary contraction strength (tensed condition), fascicle shortening was more pronounced (from 126 to 67 mm), especially when the knee was closer to full extension. Similarly as the knee was extended, the angle of pennation (fascicle angle, defined as the angle between fascicles and aponeurosis) increased (relaxed, from 14 to 18 degrees; tensed, from 14 to 21 degrees), and a greater increase in the pennation angle was observed in the tensed than in the relaxed condition when the knee was close to extension (&lt;40 degrees). We conclude that there are differences in fascicle lengths and pennation angles when the muscle is in a relaxed and isometrically tensed conditions and that the differences are affected by joint angles, at least at the submaximal contraction level.

  • Training-induced changes in muscle architecture and specific tension

    Kawakami, Y, Abe, T, Kuno, S, Fukunaga, T

    Eur. J. Appl. Physiol.   72 ( 1-2 ) 37 - 43  1995.12  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Five men underwent unilateral resistance training of elbow extensor (triceps brachii) muscles for 16 weeks. Before and after training, muscle layer thickness and fascicle angles of the long head of the triceps muscle were measured in vivo using B-mode ultrasound, and fascicle lengths were estimated. Series anatomical cross-sectional areas (ACSA) of the triceps brachii muscle were measured by magnetic resonance imaging, from which muscle volume (V-m) was determined and physiological cross-sectional area (PCSA) was calculated. Elbow extension strength (isometric; concentric and eccentric at 30, 90 and 180 degrees . s(-1)) was measured using an isokinetic dynamometer to determine specific tension. Muscle volumes, ACSA, PCSA, muscle layer thickness and fascicle angles increased after training and their relative changes were similar, while muscle and fascicle length did not change. Muscle strength increased at all velocities; however, specific tension decreased after training. Increase in fascicle angles, which would be the result of increased V-m and PCSA, would seem to imply the occurrence of changes in muscle architecture. This might have given a negative effect on the force-generating properties of the muscles.

  • 羽状筋のアーキテクチャモデル--第2報--

    川上泰雄, 市之瀬慈歩, 久野譜也, 福永哲夫

    東京大学教養学部体育学紀要   29   31 - 37  1995  [Refereed]

    Authorship:Lead author

  • 羽状筋における筋線維配置のマッピングの試み

    川上泰雄, 市之瀬慈歩, 久野譜也, 福永哲夫

    Japanese Journal of Physical Fitness and Sports Medicine   43 ( 6 ) 622  1994.12

    Authorship:Lead author

  • Specific tension of elbow flexor and extensor muscles based on magnetic resonance imaging

    Kawakami, Y, Nakazawa, K, Fujimoto, T, Nozaki, D, Miyashita, M, Fukunaga, T

    Eur. J. Appl. Physiol.   68 ( 2 ) 139 - 147  1994.02  [Refereed]

    Authorship:Lead author

     View Summary

    Series cross-section images of the upper extremity were obtained for four men by magnetic resonance imaging (MRI) and anatomical cross-sectional areas (ACSA) of elbow flexor muscles [biceps brachii (BIC), brachialis (BRA), brachioradialis (BRD)] and extensor muscles [triceps brachii (TRI)] were measured. Physiological cross-sectional area (PCSA) was calculated from the muscle volume and muscle fibre length, the former from the series ACSA and the latter from the muscle length multiplied by previously reported fibre/muscle length ratios. Elbow flexion/extension torque was measured using an isokinetic dynamometer and the force at the tendons was calculated from the torque and moment arms of muscles measured by MRI. Maximal ACSA of TRI was comparable to that of total flexors, while PCSA of TRI was greater by 1.9 times. Within flexors, BRA had the greatest contribution to torque (47%), followed; by BIC (34%) and BRD (19%). Specific tension related to the estimated velocity of muscle fibres were similar for elbow flexors and extensors, suggesting that the capacity of tension development is analogous between two muscle groups.

  • Prediction equations for body composition of Japanese adults by B-mode ultrasound.

    Takashi Abe, Masakatsu Kondo, Yasuo Kawakami, Tetsuo Fukunaga

    American journal of human biology : the official journal of the Human Biology Council   6 ( 2 ) 161 - 170  1994  [International journal]

     View Summary

    A total of 117 Japanese subjects (62 men and 55 women) volunteered for the study. Subcutaneous adipose tissue (AT) and muscle thicknesses were measured by B-mode ultrasonography at nine sites of the body. Body density (BD) was determined the hydrodensitometry. Reproducibility of thickness measurements by ultrasonography was high (r = 0.96-0.99). Correlations between AT thickness and BD ranged from -0.46 (gastrocnemius) to -0.87 (abdomen) for males and -0.46 (gastrocnemius) to -0.84 (abdomen) for females. A higher negative correlation (r = -0.89) was observed for the sum of AT thicknesses (forearm, biceps, triceps, abdomen, subscapula, quadriceps, hamstrings, gastrocnemius, and tibialis anterior) both in males and in females. Slightly lower coefficients were observed between muscle thickness and LBM (r = 0.36 to r = 0.70 for males and r = 0.44 to r = 0.55 for females). Prediction equations for BD and LBM from AT and muscle thickness were obtained by multiple regression analysis. Cross-validation on a separate sample (33 men and 44 women) showed an accurate prediction for BD. The present findings suggest that B-mode ultrasonography can be applied in clinical assessment and field surveys. © 1994 Wiley-Liss, Inc.

    DOI PubMed

  • Upper limit of fat-free mass in humans: A study on Japanese Sumo wrestlers.

    Masakatsu Kondo, Takashi Abe, Shigeki Ikegawa, Yasuo Kawakami, Tetsuo Fukunaga

    American journal of human biology : the official journal of the Human Biology Council   6 ( 5 ) 613 - 618  1994  [International journal]

     View Summary

    If limitations exist in skeletal dimensions, fat-free mass (FFM) might have an upper limit. To explore the upper limit to FFM, 37 professional Japanese Sumo wrestlers, 14 highly trained bodybuilders, and 26 untrained men were investigated for body composition (fat mass and FFM) and cross-sectional areas (CSA) of limb muscles, by hydrodensitometry and ultrasound, respectively. Mean % fat of Sumo wrestlers, bodybuilders, and untrained subjects were, respectively, 26.1%, 10.9%, and 12.1%. Sumo wrestlers had a significantly greater FFM than bodybuilders, who had a greater FFM than the untrained men. Six of the wrestlers had more than 100 kg of FFM, including the largest one of 121.3 kg (stature: 186 cm, mass: 181 kg, %fat: 33.0%). The FFM/stature ratio of elite Sumo wrestlers averaged at 0.61 kg/cm, with the highest 0.66 kg/cm. It is suggested that a FFM/stature ratio of 0.7 kg/cm may be an upper limit in humans. © 1994 Wiley-Liss, Inc.

    DOI PubMed

  • Effect of Aerobic Exercise Training and Dietary Administration on Visceral Fat Mass.

    安部孝, 板井もりえ, 川上泰雄, 杉田正明, 川原貴, 福永哲夫, 吉川宏起

    BULLETIN OF THE PHYSICAL FITNESS RESEARCH INSTITUTE   85 ( 0 ) 65 - 72  1994  [Refereed]

    DOI CiNii J-GLOBAL

  • 筋群間にみられる筋厚と筋線維角度の相互関係

    川上泰雄, 福永哲夫

    東京大学教養学部体育学紀要   28   25 - 30  1994  [Refereed]

    Authorship:Lead author

  • トレーニングに伴う上腕三頭筋の生理学的断面積および筋線維角度の変化

    川上泰雄, 安部孝, 久野譜也, 福永哲夫

    Proceedings of the Congress of the Japanese Society of Physical Education   0 ( 44 ) 304  1993.10

    Authorship:Lead author

  • Concentric and eccentric muscle strength before, during and after fatigue in 13 year-old boys

    Kawakami, Y, Kanehisa, H, Ikegawa, S, Fukunaga, T

    Eur. J. Appl. Physiol.   67 ( 2 ) 121 - 124  1993.08  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    The purpose of this study was to investigate the force-producing characteristics of boys aged 13 years in relation to fatigue of elbow flexor muscles. Maximal voluntary force in elbow flexion was measured before and after a muscle endurance test (MET) by using an isokinetic dynamometer isometrically, concentrically and eccentrically at three velocities, i.e. 0.21, 0.52, and 1.05 rad - s-1. The MET consisted of maximal concentric and eccentric muscle actions performed alternately at 0.52 rad - s-1 for 50 consecutive trials. Muscle cross-sectional area (CSA) of elbow flexor muscles (biceps brachii and brachialis) was measured by a B-mode ultrasound apparatus. Although eccentric force showed significantly higher values than concentric force during MET, there was no significant difference in the rate of decline in force between the two actions. There was no significant difference in the rate of decline in force after MET for each velocity and muscle action. Isometric, concentric and eccentric force before MET was significantly related to muscle CSA whereas, after MET, concentric force significantly correlated with muscle CSA but there was no significant correlation between muscle CSA and isometric or eccentric force. From our study, it is therefore suggested that in development to maturity, isometric, concentric and eccentric force decrease at the same rate with advancing muscle fatigue; however, there might be differences among muscle actions in facors affecting force development.

  • Muscle-fiber pennation angles are greater in hypertrophied than in normal muscles

    Kawakami, Y, Abe, T, Fukunaga, T

    J. Appl. Physiol.   74 ( 6 ) 2740 - 2744  1993.06  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Muscle-fiber pennation angles were measured in vivo with the use of ultrasonography to investigate the relationship between fiber pennation and muscle size for 32 male subjects (from untrained subjects to highly trained bodybuilders). From the image of a B-mode ultrasonogram, fiber pennation angles and thickness of triceps brachii were determined, the former as angles between echoes from the interspaces of fascicles and from the aponeurosis of long and medial heads of triceps and the latter as the distance between the fat-muscle and muscle-bone interfaces. The pennation angles were in the range of 15 and 53-degrees for the long head and 9 to 26-degrees for the medial head, which were similar to or greater than the published and the present data on human cadavers. Significant differences were observed between normal subjects and bodybuilders in muscle thickness and pennation angles (P &lt; 0.01), and there were significant correlations between muscle thickness and pennation angles for both long (r = 0.884) and medial (r = 0.833) heads of triceps, suggesting that muscle hypertrophy involves an increase in fiber pennation angles.

  • Mechanical efficiency of rowing a single scull

    Nozaki, D, Kawakami, Y, Fukunaga, T, Miyashita, M

    Scand. J. Med. Sci. Sports   3   251 - 255  1993  [Refereed]

  • Effect of leg extension training on concentric and eccentric strength of quadriceps femoris muscles

    Kawakami, Y, Hirano, Y, Miyashita, M, Fukunaga, T

    Scand. J. Med. Sci. Sports   3 ( 1 ) 22 - 27  1993  [Refereed]

    Authorship:Lead author

     View Summary

    Ten healthy male subjects carried out bilateral concentric leg extension training twice a week for 8 weeks. Before and after the training, maximal voluntary isometric and isokinetic strength and cross‐sectional areas of the quadriceps femoris were measured. Maximal bilateral leg extension power increased significantly after the training. Isometric and concentric unilateral strength did not change significantly before and after the training, while eccentric strength at 0.52 and 1.05 rad·s−1 increased after the training with no changes in cross‐sectional area. The correlations between strength and cross‐sectional area increased significantly after the training. It was speculated that the increase in eccentric strength of knee extensors was due to modification of the neural inhibition during eccentric muscle actions. Copyright © 1993, Wiley Blackwell. All rights reserved

    DOI

  • 筋厚と筋線維角度に基づいた羽状筋のアーキテクチャモデル

    川上泰雄, 安部孝, 福永哲夫

    東京大学教養学部体育学紀要   27   9 - 13  1993  [Refereed]

    Authorship:Lead author

  • Reliability of measurement of oxygen uptake by a portable telemetric system

    Kawakami, Y, Nozaki, D, Matsuo, A, Fukunaga, T

    Eur. J. Appl. Physiol.   65 ( 5 ) 409 - 414  1992.11  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    The purpose of the present study was to check the reliability of measurements of oxygen uptake (VO2) using a newly developed portable telemetry system. This system (K2) consisted of a face mask, a flow meter, a gas analyser with a transmitter, and a receiver. The total mass for the subject to carry was about 850 g. Three experiments were carried out, firstly to check the reliability and reproducibility of the flow meter and the K2 gas analyser, secondly to check the accuracy of K2 by comparing it with the Douglas bag method (DB), and thirdly to apply K2 to sports activities. In the first experiment, the flow meter was highly accurate up to 180 1 . min -1 with good reproducibility. The measurement error of the gas analyser was less than 2%. In the second experiment, there was no significant difference in the calculated ventilation between K2 and DB. The VO2 showed no significant difference between K2 and DB with some exceptions. In the third experiment, we succeeded in the measurement of VO2 during rowing on water. The measurement of VO2 during running and playing soccer was also possible. It would seem that the present system could well be a powerful tool in the field measurement of VO2 during various sports activities.

  • ボートの競技記録に影響を及ぼす因子

    川上泰雄, 福永哲夫

    バイオメカニズム学会誌   16 ( 2 ) 101 - 109  1992

    Authorship:Lead author

    J-GLOBAL

  • 等尺性、短縮性および伸張性筋活動時の筋力-筋放電量の関係

    川上泰雄, 福永哲夫

    東京大学教養学部体育学紀要   26   5 - 14  1992  [Refereed]

    Authorship:Lead author

  • 準高所における運動に対する生理的応答-平地との比較から-

    川上泰雄, 福永哲夫, 野崎大地

    東京大学教養学部体育学紀要   26   89 - 94  1992  [Refereed]

    Authorship:Lead author

  • 心拍数を利用した無酸素性作業閾値(AT)の決定

    川上泰雄, 山本義春, 杢子耕一, 中村好男, 武藤芳照, 宮下充正

    呼吸と循環   37   179 - 183  1989  [Refereed]

    Authorship:Lead author

  • 動物の水中運動

    川上泰雄

    Jpn. J. Sports Sci.   7   510 - 516  1988

    Authorship:Lead author, Corresponding author

▼display all

Books and Other Publications

  • Imaging: Ultrasound. In: Fascia: The Tensional Network of the Human Body (2nd Ed.)

    Kawakami, Y, Secco, A( Part: Joint author)

    Schleip R;Stecco C;Driscoll M;Huijing P・Elsevier  2022.03

  • 菊芋×運動レシピでイキキ! アクティブシニアライフのすすめ

    川上泰雄, 田中史子

    内閣府・SIP早稲田大学研究班  2019

  • 疲労と身体運動 スポーツでの勝利も健康の改善も疲労を乗り越えて得られる(分担執筆)

    川上泰雄

    杏林書院  2018

  • スポーツ科学で健康寿命延伸 Osteoporosis Japan PLUS

    川上泰雄

    ライフサイエンス出版  2017

  • 体の動きと熱を生み出す筋肉

    川上泰雄

    少年写真新聞社  2016

  • これからの医療を支えるメディカルデザイン(分担執筆)

    川上泰雄

    ライフサイエンス出版  2016

  • 筋の硬さとストレッチング

    稲見崇孝, 川上泰雄

    杏林書院  2015

  • SEBI・SEIのためのストレッチングエクササイズ指導理論

    加藤えみか, 川上泰雄

    (公)日本フィットネス協会  2014

  • 新版 スポーツ生理学(分担執筆)

    川上泰雄ほか

    市村出版  2014

  • 現代高校保健体育 教授用参考資料(分担執筆)

    川上泰雄ほか

    大修館書店  2013

  • 最新高等保健体育(分担執筆)

    川上泰雄ほか

    大修館書店  2013

  • バイオメカニクスの基礎

    医学映像教育センター, 川上, 泰雄

    医学映像教育センター  2012 ISBN: 9784862435071

  • 歩・走動作

    医学映像教育センター, 川上, 泰雄

    医学映像教育センター  2012 ISBN: 9784862435088

  • 跳動作

    医学映像教育センター, 川上, 泰雄

    医学映像教育センター  2012 ISBN: 9784862435095

  • ゴルフ解剖学

    クレイグ・デイビース, ヴィンス・ディサイア著, 川上泰雄, 武田淳也訳, 監訳

    ベースボール・マガジン  2012 ISBN: 9784583103716

  • Fascia in Manual Therapy

    Langevin, H, Kawakami, Y

    Elsevier  2012

  • スポーツバイオメカニクスの基礎 Vol. 1 バイオメカニクスの基礎

    川上泰雄

    医学映像教育センター(DVD)  2012

  • スポーツバイオメカニクスの基礎 Vol. 2 歩・走動作

    川上泰雄

    医学映像教育センター(DVD)  2012

  • スポーツバイオメカニクスの基礎 Vol. 3 跳動作

    川上泰雄

    医学映像教育センター(DVD)  2012

  • ローイングの健康スポーツ科学

    川上泰雄ほか

    市村出版  2011

  • 柔軟性の科学

    マイケル J.オルター著, 伊藤マモル, ほか] 訳

    大修館書  2010 ISBN: 9784469266948

  • 神経・骨格筋系の科学

    医学映像教育センター制作著作

    医学映像教育センタ  2010 ISBN: 9784862434005

  • 柔軟性の科学

    川上泰雄ほか

    大修館書店  2010

  • スプリントトレーニングー速く走る・泳ぐ・滑るを科学するー

    川上泰雄ほか

    朝倉書店  2009

  • 身体運動のバイオメカニクス研究方法

    川上泰雄ほか

    講談社  2008

  • 健康運動指導実践マニュアル

    川上泰雄ほか

    文光堂  2008

  • トレーニング科学最新エビデンス

    川上泰雄ほか

    講談社  2008

  • 身近なはてな

    川上泰雄ほか

    ニュートンプレス  2008

  • 大学院で「研究」する意味とは

    川上泰雄

    大学受験白書  2007

  • スポーツの百科事典

    川上泰雄ほか

    丸善  2006

  • オックスフォードスポーツ医科学辞典

    川上泰雄ほか

    朝倉書店  2006

  • スポーツ科学事典

    川上泰雄ほか

    平凡社  2006

  • 整形外科医に必要なスポーツ医学の知識

    川上泰雄ほか

    金原出版  2005

  • NSCAパーソナルトレーナーのための基礎知識

    川上泰雄ほか

    森永製菓  2005

  • バイオメカニクス〜身体運動の科学的基礎〜

    川上泰雄ほか

    杏林書院  2004

  • ランニング障害

    川上泰雄ほか

    文光堂  2003

  • 筋の科学事典

    川上泰雄ほか( Part: Joint author)

    朝倉書店  2002

  • The length-force characteristics of human gastrocnemius and soleus muscles in vivo

    Kawakami, Y, Kumagai, K, Huijing, P. A, Hijikata, T, Fukunaga, T

    Skeletal Muscle Mechanics, From Mechanisms to Function, John Wiley&amp;Sons  2000

  • 教養としてのスポーツ・身体運動

    川上泰雄ほか

    東京大学出版会  2000

  • スポーツ・バイオメカニクス

    川上泰雄ほか

    朝倉書店  2000

  • 骨格筋-運動による機能と形態の変化-

    川上泰雄ほか

    ナップ  1997

  • からだの「仕組み」のサイエンス

    川上泰雄ほか

    杏林書院  1997

  • 生化学、生理学からみた骨格筋に対するトレーニング効果

    川上泰雄

    ナップ  1996

  • トレーニング科学ハンドブック

    川上泰雄ほか

    朝倉書店  1996

  • 人間の骨格筋の形状と筋活動能力

    川上泰雄

    [川上泰雄  1995

  • スポーツ・スピード

    川上泰雄ほか

    ベースボールマガジン社  1991

  • 競技力向上のスポーツ科学II

    川上泰雄ほか

    朝倉書店  1989

  • 指導者のための基礎知識フィットネスQ&amp;A

    川上泰雄ほか

    南江堂  1988

  • 指導者のための基礎知識フィットネスQ&A

    川上泰雄ほか

    南江堂  1988

  • スポーツ・データバンク小事典

    川上泰雄ほか

    ぎょうせい  1987

▼display all

Misc

  • Effects of amino acid mixture on functional and morphological properties of Achilles tendon

    Kawakami, Y, Shiotani, H, Otsuka, S, Hui, L, Ichinose, H, Chi, Y, Kurumisawa, K, Yamada, Y, Shan, X, Saeki, J, Sado, N, Tanaka, F, Kumai, T, Nishitani, S, Takada, M, Toyoda, S, Uchida, H, Adachi, H

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  • ボディビルダーの減量における大腿部筋横断面積および非収縮要素横断面積の変化

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  • 人間の特徴に着目した投球ヒューマノイドロボットの開発(第2報:人間と同等の出力発揮が可能な前腕部および手部機構の開発)

    宮澤啓吾, 渡部竜也, 峯下弘毅, 大谷拓也, 川上泰雄, 林憲玉, 林憲玉, 高西淳夫, 高西淳夫

    日本ロボット学会学術講演会予稿集(CD-ROM)   39th  2021

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  • Development of Training System to Improve Walking Effect-Evaluation of Training Prototype Based on Estimation of Muscle Activity by Using Biped Robot Model and Machine Learning Technique-

    COSENTINO Sarah, GU Zixi, AL MAAMARI Mazoon, 川上泰雄, 高西淳夫

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    塩谷彦人, 塩谷彦人, 川上泰雄, 川上泰雄

    Journal of Training Science for Exercise and Sport   32 ( 4 )  2020

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  • ボディビルダーの減量における大腿部筋横断面積および非収縮要素横断面積の変化

    一瀬星空, 長瀬嘉剛, 佐渡夏紀, 呂匯, 山田雄基, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   33rd  2020

    J-GLOBAL

  • 陸上競技におけるスプリント走技能の向上方法に関する研究(自重免荷装置による姿勢操作時の走速度・股関節可動域への影響)

    打越力, 山本諒, 野口俊介, 永井洋輔, 重野将秀, 玉地雅浩, 川上泰雄, 上杉繁

    日本機械学会シンポジウム:スポーツ工学・ヒューマンダイナミクス講演論文集(CD-ROM)   2019  2019

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  • 筋腱複合体の形態と機能に関する新たな視座:生体計測の知見から

    川上泰雄

    日本理学療法学術大会(Web)   53rd  2019

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  • ランニングが足底腱膜の形態的・力学的特性および足部形態に及ぼす影響:長距離ランナーは急性の変化を小さくランニングを遂行する

    塩谷彦人, 塩谷彦人, 溝口朋裕, 山下亮, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   32nd  2019

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  • ダイナミックな動作を取り入れた体操教室の実施が高齢者の体幹筋量に及ぼす影響

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    日本基礎理学療法学会学術大会プログラム・抄録集(Web)   24th  2019

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  • 長距離ランナーの3か月間の走り込みトレーニングが走タイムとアキレス腱の力学的・形態的特性に及ぼす影響

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    日本トレーニング科学会大会プログラム・抄録集   31st  2018

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  • 長距離ランナーの3か月間の走り込みトレーニングが走タイムとアキレス腱の力学的・形態的特性に及ぼす影響

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    Journal of Training Science for Exercise and Sport   30 ( 3 )  2018

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  • Developing Driving Skills of a Road Bike for Faster Cornering on Downhills (Exploring on Leaning and Precision Riding with an Automatic Speed Keeping System)

    上林周平, 榎本晋之介, 酒井大樹, 岩田宗也, 川上泰雄, 上杉繁

    日本機械学会シンポジウム:スポーツ工学・ヒューマンダイナミクス講演論文集(CD-ROM)   2018  2018

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  • Developing a Tool Relieving Self-Weight and Extending Flight Duration to Support for Improving Sprint Skills

    永井洋輔, 重野将秀, 打越力, 川上泰雄, 上杉繁

    日本機械学会シンポジウム:スポーツ工学・ヒューマンダイナミクス講演論文集(CD-ROM)   2018  2018

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  • Improvement Method on Pedaling Skills of a Road Bike (Development of Training Equipment with Local Braking Applied to Pull-up Action)

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    日本機械学会シンポジウム:スポーツ工学・ヒューマンダイナミクス講演論文集(CD-ROM)   2018  2018

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  • Exploring on Performance of a Lower Limb Attached Artificial Bi-articular Muscle on the Body Part Where No Innate Muscle Exists

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    日本機械学会設計工学・システム部門講演会論文集(CD-ROM)   28th  2018

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  • 高強度運動後の筋硬度と筋形状の変化

    米津貴久, 池田尚樹, 川上泰雄, 福林徹

    Journal of Training Science for Exercise and Sport   28 ( 3 )  2017

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  • 加齢が大腿部・腰部の個々の筋量・筋力に及ぼす影響とその性差

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    Journal of Training Science for Exercise and Sport   28 ( 3 )  2017

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  • エリートアスリートの随意最大筋力に影響する因子

    齋藤輝, 齋藤輝, 前大純朗, 前大純朗, 池田尚樹, 大塚俊, 河越勇紀, 西田和正, 塩谷彦人, 山岸卓樹, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   30th  2017

    J-GLOBAL

  • スポーツ科学で介護予防 大腿部の筋量維持が健康寿命延伸の鍵

    川上泰雄

    Osteoporosis Japan Plus   2 ( 4 )  2017

    J-GLOBAL

  • エリートアスリートの随意最大筋力に影響する因子

    齋藤輝, 齋藤輝, 前大純朗, 前大純朗, 池田尚樹, 大塚俊, 河越勇紀, 西田和正, 塩谷彦人, 山岸卓樹, 川上泰雄

    Journal of Training Science for Exercise and Sport   29 ( 2 )  2017

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  • 足首に装着する単一の慣性センサに基づく足の筋肉収縮強度推定手法の提案

    GU Z., 兒玉拓磨, 河西利太朗, ZHANG D., KONG W., COSENTINO S., SESSA S., 川上泰雄, 高西淳夫, 高西淳夫

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM)   18th  2017

    J-GLOBAL

  • Dynamic characteristic analysis of the golf shaft

    原有心, 川上泰雄

    フジクラ財団研究報告書(CD-ROM)   2017  2017

    J-GLOBAL

  • 大腿直筋の筋疲労が低強度・長時間の等尺性膝関節伸展時における大腿四頭筋の活動交替様相に与える影響

    齋藤輝, 飯泉拳, 川上泰雄

    東京体育学研究   8  2017

    J-GLOBAL

  • プライオメトリックトレーニングが腱スティフネスおよびドロップジャンプ中の筋腱動態に与える影響

    平山邦明, 岩沼聡一朗, 池田尚樹, 吉川亜有美, 江間諒一, 川上泰雄

    Journal of Training Science for Exercise and Sport   27 ( 2 )  2016

    J-GLOBAL

  • 陸上短距離選手にとって本当に大腰筋は重要か

    江間諒一, 江間諒一, 阪口正律, 川上泰雄

    Journal of Training Science for Exercise and Sport   27 ( 2 )  2016

    J-GLOBAL

  • ペダルへの足部固定が高負荷・高回転数ペダリング時の大腿部の筋活動に及ぼす影響

    福田渉, 稲見崇孝, 川上泰雄

    Journal of Training Science for Exercise and Sport   27 ( 2 )  2016

    J-GLOBAL

  • 大腿部筋膜の構造と機能(第1報):深筋膜における線維走行の部位比較

    大塚俊, 大塚俊, 大道裕介, 大道美香, 矢倉富子, 内藤宗和, 中野隆, 川上泰雄, 川上泰雄

    日本解剖学会総会・全国学術集会講演プログラム・抄録集   121st  2016

    J-GLOBAL

  • 加齢が大腿部の個々の筋量・筋力に及ぼす影響とその性差

    大塚俊, 齋藤輝, 前大純朗, 江間諒一, 田中史子, 柴田重信, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   29th  2016

    J-GLOBAL

  • 高強度運動後の筋硬度と筋形状の変化

    米津貴久, 池田尚樹, 川上泰雄, 福林徹

    日本トレーニング科学会大会プログラム・抄録集   29th  2016

    J-GLOBAL

  • 高強度自転車ペダリング時における大腿部筋群の筋活動-足部固定の有無に注目して-

    福田渉, 稲見崇孝, 江間諒一, 川上泰雄

    東京体育学研究   7  2016

    J-GLOBAL

  • 自転車ロードレースにおける引き足技能の向上手法に関する研究-クランク長制御による左右独立型の可変ペダル軌道システムの開発-

    小池雅人, 佐藤慶彦, 川上湧一, 福田渉, 川上泰雄, 上杉繁

    日本機械学会シンポジウム:スポーツ工学・ヒューマンダイナミクス講演論文集(CD-ROM)   2016  2016

    J-GLOBAL

  • ゴルフスイング中の筋活動と身体の動き-プロとアマの比較-

    川上泰雄, 原有心

    ゴルフの科学   28 ( 1 )  2015

    J-GLOBAL

  • プライオメトリックトレーニングが腱スティフネスおよびドロップジャンプ中の筋腱動態に与える影響

    平山邦明, 岩沼聡一朗, 池田尚樹, 吉川亜有美, 江間諒一, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   28th  2015

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  • 陸上短距離選手にとって本当に大腰筋は重要か

    江間諒一, 阪口正律, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   28th  2015

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  • ペダルへの足部固定が高負荷・高回転数ペダリング時の大腿部の筋活動に及ぼす影響

    福田渉, 稲見崇孝, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   28th  2015

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  • 世界最高齢エベレスト登頂者における下肢骨格筋の量的特徴

    江間諒一, 江間諒一, 阪口正律, 阪口正律, 川上泰雄

    東京体育学研究   6  2015

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  • 発育期男子児童と成人男性の大腿部骨格筋の量的特徴

    江間諒一, 江間諒一, 茂木康嘉, 川上泰雄

    日本体育学会大会予稿集   66th  2015

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  • 伸張性筋活動中の大腿二頭筋長頭の筋束動態

    福留千弥, 川上泰雄, 福林徹

    日本臨床スポーツ医学会誌   22 ( 4 )  2014

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  • 骨格筋を筋腱複合体として捉える:基礎知識および最近の知見

    川上泰雄

    日本運動生理学会大会プログラム・抄録集   22nd  2014

    J-GLOBAL

  • 月経周期が足部・足関節の可動性および軟組織の伸長性に及ぼす影響

    吉川亜有美, 岩沼聡一朗, 川上泰雄

    体力科学   63 ( 3 )  2014

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    米津貴久, 稲見崇孝, 川上泰雄, 広瀬統一, 福林徹

    日本トレーニング科学会大会プログラム・抄録集   27th  2014

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    江間諒一, 江間諒一, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   27th  2014

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    日本トレーニング科学会大会プログラム・抄録集   27th  2014

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  • 等尺性足関節底屈トルクと腓腹筋筋放電量の関係に及ぼすトルク増加率の影響-収縮中の筋束動態の実測を通じた検討-

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  • 足関節底屈動作中の下腿三頭筋の筋束動態と足部変形の生体計測-超音波法と3次元動作解析によるアプローチ-

    塙真太郎, 阪口正律, 川上泰雄

    日本超音波骨軟組織学術研究   13 ( 1 )  2013

    J-GLOBAL

  • レジスタンス運動中の大腿四頭筋の神経筋活動および筋酸素動態の協働筋間差および同一筋内部位差

    宮本直和, 若原卓, 江間諒一, 川上泰雄

    体力科学   62 ( 6 )  2013

    J-GLOBAL

  • 大学自転車競技選手における6ケ月間のトレーニングによる大腿四頭筋および大腰筋の量的変化

    江間諒一, 江間諒一, 若原卓, 谷中拓哉, 近田彰治, 金久博昭, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   26th  2013

    J-GLOBAL

  • 関節可動域・角速度の違いが最大随意伸張性筋活動中の足関節背屈筋力に及ぼす影響

    菱川啓太, 茂木康嘉, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   26th  2013

    J-GLOBAL

  • 月経周期が下腿三頭筋・腱の力学的特性および足部・足関節の可動性に及ぼす影響

    吉川亜有美, 岩沼聡一朗, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   26th  2013

    J-GLOBAL

  • 下肢にみられる部位特異的サルコペニアと身体活動量との関係

    光川眞壽, 小川まどか, 川上泰雄

    日本体育学会大会予稿集   64th  2013

    J-GLOBAL

  • 筋収縮に伴うアキレス腱モーメントアームの変化および変化要因

    橋詰賢, 赤木亮太, 川上泰雄, 岩沼聡一朗, 金久博昭, 矢内利政

    日本体育学会大会予稿集   64th   198 - 199  2013

    J-GLOBAL

  • Influence Of Intensity Of Conditioning Contraction On The Extent Of Postactivation Potentiation Is Muscle Dependent

    Atsuki Fukutani, Kosuke Hirata, Naokazu Miyamoto, Hiroaki Kanehisa, Toshimasa Yanai, Yasuo Kawakami

    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE   44   637 - 637  2012.05

    Research paper, summary (international conference)  

  • 発育期少年の足アーチは成年と比べて受動背屈時の変形が大きい

    岩沼聡一朗, 岩沼聡一朗, 橋詰賢, 金久博昭, 矢内利政, 川上泰雄

    日本発育発達学会大会抄録集   10th  2012

    J-GLOBAL

  • モーションキャプチャによる昆虫型羽ばたきロボットの翼運動解析

    富永峻平, 澤根慧, 出澤義人, 桑原猛, 阪口正律, 松本奈々, 川上泰雄, 渡邉孝信

    応用物理学会学術講演会講演予稿集(CD-ROM)   73rd  2012

    J-GLOBAL

  • 垂直跳時の頭頂位置変位を利用した簡易な発揮パワー測定

    星川佳広, 村越崇宏, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • レジスタンストレーニングによるMR-T2の変化と筋肥大の関連:協働筋間差および筋内部位差に着目して

    若原卓, 江間諒一, 宮本直和, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • 大学ボート選手における大腿四頭筋の形態的特徴

    江間諒一, 若原卓, 金久博昭, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • 大腿部への圧迫が大腿四頭筋の発揮筋力に及ぼす影響

    松本奈々, 宮本直和, 浦中宏典, 丸茂智彦, 谷口耕一, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • 動的筋力に対する高強度短時間のウォームアップ収縮の効果はレジスタンストレーニング後により顕著になる

    宮本直和, 若原卓, 江間諒一, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • 伸張性筋活動時の筋束長変化と遅発性筋肉痛との関連性:運動速度の影響

    佐久間淳, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   25th  2012

    J-GLOBAL

  • 身体運動と筋・腱の動態

    川上泰雄

    日本整形外科学会雑誌   85 ( 8 )  2011

    J-GLOBAL

  • 超音波法による大腿直筋の筋束長および羽状角の計測

    江間諒一, 茂木康嘉, 若原卓, 金久博昭, 矢内利政, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   24th  2011

    J-GLOBAL

  • 負荷・速度の違いによる肩複合体協調運動の変化

    上里竜司, 近田彰治, 川上泰雄, 矢内利政

    日本トレーニング科学会大会プログラム・抄録集   24th  2011

    J-GLOBAL

  • 下腿三頭筋の筋の長さが筋活動レベルに与える影響

    福谷充輝, 江間諒一, 宮本直和, 金久博昭, 矢内利政, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   24th  2011

    J-GLOBAL

  • 磁気共鳴撮像法を用いた仙腸関節の可動性の計測

    小川はるな, 吉川亜有美, 橋詰賢, 岩沼聡一朗, 岩沼聡一朗, 金久博昭, 矢内利政, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   24th  2011

    J-GLOBAL

  • 腹部から下肢の皮下脂肪分布とその性差

    松岡由子, 設楽佳世, 岩沼聡一朗, 岩沼聡一朗, 矢内利政, 金久博昭, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   24th  2011

    J-GLOBAL

  • 成人女性の足部の可動性と筋力および結合組織の形態的・力学的特性の妊娠中の変化

    吉川亜有美, 岩沼聡一朗, 岩沼聡一朗, 川上泰雄

    日本超音波骨軟組織学術研究   11 ( 1 )  2011

    J-GLOBAL

  • 05バ-25-ポ-04 等尺性足関節底屈トルク発揮に伴う下腿三頭筋の筋腱複合体長変化の推定(05.バイオメカニクス,一般研究発表抄録)

    岩沼 聡一朗, 赤木 亮太, 橋詰 賢, 金久 博昭, 矢内 利政, 川上 泰雄

    日本体育学会大会予稿集   62 ( 0 )  2011

    CiNii J-GLOBAL

  • 断裂後のアキレス腱の形態的・力学的特性の変化

    川上泰雄, 若原卓, 川本伸一

    日本超音波骨軟組織学術研究   10 ( 1 )  2010

    J-GLOBAL

  • 月経周期が足関節の可動域および筋・腱特性に及ぼす影響

    吉川亜有美, 平山邦明, 栗原俊之, 川上泰雄

    体力科学   59 ( 6 )  2010

    J-GLOBAL

  • 段階的弾性圧迫ストッキングの着圧がカーフレイズ運動後の筋疲労に与える影響

    宮本直和, 光川眞壽, 矢内利政, 川上泰雄

    日本体育学会大会予稿集   61st  2010

    J-GLOBAL

  • 発育期におけるアキレス腱の形態的・力学的特性

    茂木康嘉, 鳥居俊, 金久博昭, 川上泰雄, 矢内利政

    日本体育学会大会予稿集   61st  2010

    J-GLOBAL

  • 腱の力学的特性および疾走中の関節トルクがスプリントパフォーマンスに及ぼす影響

    小林海, 宮本直和, 土江寛裕, 金久博昭, 矢内利政, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   23rd  2010

    J-GLOBAL

  • 04生-3P-P20 肘関節屈曲筋群および伸展筋群の筋体積-関節トルク関係は年齢と性の影響を受けない(04.運動生理学,一般研究発表抄録)

    赤木 亮太, 太田 めぐみ, 高井 洋平, 金久 博昭, 福永 哲夫, 川上 泰雄

    日本体育学会大会予稿集   61 ( 0 ) 144 - 144  2010

    DOI CiNii J-GLOBAL

  • アキレス腱モーメントアームの3次元計測と2次元計測の比較

    橋詰賢, 岩沼聡一朗, 赤木亮太, 金久博昭, 川上泰雄, 矢内利政

    体力科学   58 ( 6 ) 610  2009.12

    J-GLOBAL

  • 遅発性筋肉痛発生時および治癒時における代謝量の変化

    桜井智野風, 樫村修生, 川上泰雄

    体力科学   58 ( 3 )  2009

    J-GLOBAL

  • 上腕三頭筋腱の力学的特性の規定因子とそのトレーニング効果

    宮本直和, 村田浩一郎, 杉崎範英, 若原卓, 金久博昭, 福永哲夫, 川上泰雄

    早稲田大学人間科学学術院人間科学研究   22 ( 1 )  2009

    J-GLOBAL

  • 日常生活動作における身体加速度と下肢の筋活動水準の関係

    桂田勝, 若原卓, 高井洋平, 福谷充輝, 金久博昭, 川上泰雄, 矢内利政

    体力科学   58 ( 6 )  2009

    J-GLOBAL

  • 跳躍運動の反動効果に関節スティフネスが与える影響に関する新知見

    平山邦明, 宮本直和, 杉崎範英, 矢内利政, 金久博昭, 福永哲夫, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   22nd  2009

    J-GLOBAL

  • 主運動前の「全力発揮」がもたらす筋力増強効果には全力発揮の時間が影響を及ぼす

    福谷充輝, 宮本直和, 金久博昭, 川上泰雄, 矢内利政

    日本トレーニング科学会大会プログラム・抄録集   22nd  2009

    J-GLOBAL

  • 収縮強度および運動単位の動員度がPostactivation Potentiationに及ぼす影響

    福谷充輝, 金久博昭, 宮本直和, 川上泰雄, 矢内利政

    日本体育学会大会予稿集   60th  2009

    J-GLOBAL

  • 等尺性収縮に伴う肘関節屈曲筋群の横断面変化

    赤木亮太, 岩沼聡一朗, 金久博昭, 福永哲夫, 川上泰雄

    日本体育学会大会予稿集   60th   141  2009

    J-GLOBAL

  • 新たな筋横断面積指標の確立

    赤木亮太, 矢内利政, 金久博昭, 福永哲夫, 川上泰雄

    第21回バイオメカニズム・シンポジウム予稿集     127 - 136  2009

  • 306. BI法による中高齢者の大腿部筋体積推定の精度に及ぼす電極配置の影響(形態・体構成,一般口演,第63回日本体力医学会大会)

    増尾 善久, 太田 めぐみ, 高井 洋平, 川上 泰雄, 福永 哲夫, 佐藤 等

    体力科學   57 ( 6 ) 785 - 785  2008.12

    CiNii J-GLOBAL

  • Effects of Rowing Exercise on Health Promotion for Older People

    樋口満, 坂本静男, 川上泰雄, 鳥居俊

    デサントスポーツ科学   29  2008

    J-GLOBAL

  • 中学生のアキレス腱特性とスプリントパフォーマンスとの関係

    茂木康嘉, 勝亦陽一, 岩沼聡一朗, 川上泰雄, 矢内利政, 福永哲夫

    日本トレーニング科学会大会プログラム・抄録集   21st  2008

    J-GLOBAL

  • 高強度間欠的なスプリント走が膝蓋腱および外側広筋腱の伸展性に及ぼす影響

    光川眞壽, 田村恵彦, 福永哲夫, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   21st  2008

    J-GLOBAL

  • 3次元超音波法による筋束長および羽状角測定

    池川繁樹, 岩沼総一郎, 栗原俊之, 金久博昭, 福永哲夫, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   21st  2008

    J-GLOBAL

  • カーフレイズ運動後に生じる遅発性筋肉痛と足底屈トルク低下の関係

    栗原俊之, 佐久間淳, 福永哲夫, 川上泰雄

    日本トレーニング科学会大会プログラム・抄録集   21st  2008

    J-GLOBAL

  • 人間の骨格筋特性

    川上泰雄

    整形外科リハビリテーション学会学会誌   10  2008

    J-GLOBAL

  • 05-12-15102-15 バスケットボールのシュート距離の変化が動作及びボールの軌跡に及ぼす影響(バイオメカニクス8,05.バイオメカニクス,一般研究発表抄録)

    元安 陽一, 勝亦 陽一, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   59 ( 0 ) 156 - 156  2008

    DOI CiNii J-GLOBAL

  • 04-11-8LBY-25 幅広い年齢層の男女に適用可能な肘屈筋群の筋体積推定式の作成(運動生理学1,04.運動生理学,一般研究発表抄録)

    赤木 亮太, 加藤 えみか, 高井 洋平, 太田 めぐみ, 金久 博昭, 若原 卓, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   59 ( 0 ) 129 - 129  2008

    DOI CiNii J-GLOBAL

  • 483. 中学生陸上競技選手のスプリントパフォーマンスの縦断的変化(バイオメカニクス,第62回日本体力医学会大会)

    小林 海, 勝亦 陽一, 土江 寛裕, 福永 哲夫, 川上 泰雄

    体力科學   56 ( 6 ) 820 - 820  2007.12

    CiNii J-GLOBAL

  • 250. 生体電気インピーダンス法(BI法)による下肢骨格筋量の推定における測定姿勢の検討(形態・体構成,第62回日本体力医学会大会)

    冨田 真司, 増尾 善久, 高井 洋平, 太田 めぐみ, 川上 泰雄, 福永 哲夫

    体力科學   56 ( 6 ) 703 - 703  2007.12

    CiNii J-GLOBAL

  • 異なる衝撃緩衝性を有するシューズがランニング中の脚スティフネスと下肢の関節トルクに及ぼす影響

    阪口 正律, 小林 海, 元安 陽一, 福永 哲夫, 江口 貴弘, 川上 泰雄

    日本トレーニング科学会   20回   76 - 76  2007.11

  • ローイング動作中の発揮パワーと筋活動との関係

    四谷高広, 下田学, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 発育期における筋形態および筋機能が投球スピードに及ぼす影響

    勝亦陽一, 川上泰雄, 福永哲夫

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 最大随意収縮後に単収縮張力が増強する要因を探る-筋束および腱組織の長さに着目して-

    宮本直和, 光川眞壽, 杉崎範英, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • Noninvasive Measurements on Physiological and Mechanical Information in Human Muscle in Vivo

    小田俊明, 衣笠竜太, RAJENDRA Mayoran, 片岡弘之, 川上泰雄, 山本晃生, 横田秀夫, 姫野龍太郎

    日本機械学会年次大会講演論文集   2007 ( Vol.5 )  2007

    J-GLOBAL

  • 足関節角度の違いがアキレス腱の形状に与える影響

    岩沼聡一朗, 栗原俊之, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 能動的および受動的な腱伸長が筋腱複合体の力学的特性に及ぼす影響

    加藤えみか, 光川眞壽, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • ヒト大腿四頭筋における伸張性筋活動後の等尺性筋力増強

    杉崎範英, 川上泰雄, 福永哲夫

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 持続的な最大下等尺性足関節底屈トルク発揮中の下腿三頭筋の筋活動および腱伸長の変化

    光川眞壽, 野入篤志, 杉崎範英, 宮本直和, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 3次元超音波法をもちいた収縮中の腱組織の長さ変化測定

    池川繁樹, 栗原俊之, 金久博昭, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 発育期男子における腓腹筋の筋・腱の形状

    栗原俊之, 金久博昭, 安部孝, 角田直也, 加藤えみか, 福永哲夫, 川上泰雄

    体力科学   56 ( 6 )  2007

    J-GLOBAL

  • 下腿三頭筋の体積とアキレス腱の横断面積の関係

    岩沼聡一朗, 福永哲夫, 川上泰雄

    東京体育学研究   2007  2007

    J-GLOBAL

  • 下腿三頭筋の体積とアキレス腱の横断面積の関係

    岩沼聡一朗, 福永哲夫, 川上泰雄

    東京体育学研究   2006  2007

    J-GLOBAL

  • 関節角度の違いがPostactivation Potentiationに与える影響

    宮本直和, 福永哲夫, 川上泰雄

    日本体育学会大会予稿集   58th  2007

    J-GLOBAL

  • 関節運動制限下での投球スピードにおける大学野球選手と未経験者の比較

    勝亦陽一, 丸山洋輔, 川上泰雄, 福永哲夫

    日本体育学会大会予稿集   58th  2007

    J-GLOBAL

  • ボート競技におけるオフシーズントレーニングの縦断的検討-大学ボート部員を対象として-

    四谷高広, 下田学, 福永哲夫, 川上泰雄

    日本体育学会大会予稿集   58th  2007

    J-GLOBAL

  • 3次元肩甲骨キネマティクス測定法の検討-Magnetic tracking deviceとMRI法の比較-

    村田浩一郎, 吉村達彦, 矢内利政, 川上泰雄, 福永哲夫

    日本体育学会大会予稿集   58th  2007

    J-GLOBAL

  • 04-5-GYM-4 中高年齢者における関節トルクおよび筋力と筋断面積指標との関係 : 安静時と最大等尺性収縮時の比較(04.運動生理学,一般研究発表抄録)

    赤木 亮太, 高井 洋平, 福田 誠, 金久 博昭, 太田 めぐみ, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   58 ( 0 ) 200 - 200  2007

    DOI CiNii J-GLOBAL

  • 生体電気インピーダンス(BI)法を用いた筋形状変化推定に関する検討

    美濃羽弘樹, 赤木亮太, 太田めぐみ, 増尾善久, 川上泰雄, 福永哲夫

    体力科学   55 ( 6 ) 848  2006.12

    J-GLOBAL

  • 安静時および最大等尺性筋活動時の肘関節屈筋群筋厚および上腕周径囲:測定位置の影響

    赤木亮太, 金久博昭, 川上泰雄, 福永哲夫

    体力科学   55 ( 6 ) 610  2006.12

    J-GLOBAL

  • 14. Application of Bio-electrical Impedance Method for Estimating Deformation of the Muscle in the Upper Arm.

    MINOWA HIROKI, AKAGI RYOTA, OHTA MEGUMI, MASUO YOSHIHISA, KAWAKAMI YASUO, FUKUNAGA TETSUO

    Japanese Journal of Physical Fitness and Sports Medicine   55 ( 3 )  2006.06

    CiNii J-GLOBAL

  • 3ケ月の自重負荷トレーニングが後期高齢者の身体機能に及ぼす影響

    境健吾, 設楽佳世, 伊原恵美子, 佐久間澄枝, 竹下香寿美, 川上泰雄, 福永哲夫

    体力科学   55 ( 3 )  2006

    J-GLOBAL

  • 腱の弾性と筋活動が反動効果に与える影響

    平山邦明, 加藤えみか, 永吉俊彦, 杉崎範英, 光川眞壽, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 前頭前野の活動水準と筋活動水準の関係

    福田誠, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 生体電気インピーダンス(BI)法を用いた筋量推定に関する検討

    美濃羽弘樹, 赤木亮太, 太田めぐみ, 増尾善久, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 予備緊張による短縮性トルク増加の要因

    千野謙太郎, 小田俊明, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会   55 ( 6 )  2006

    J-GLOBAL

  • 超音波法を用いたヒラメ筋の力-速度関係の生体計測

    千野謙太郎, 小田俊明, 栗原俊之, 永吉俊彦, 加藤えみか, 深代千之, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • Body Line Scanner(BLS)による身体セグメント別体積測定

    設楽佳世, 永島 秀彦, 近藤 隆, 谷本 広志, 山本 百合, 守屋 有佳里, 小野寺 正道, 福渡 靖, 金久博昭, 川上泰雄, 福永哲夫

    第61回日本体力医学会大会   55 ( 6 )  2006

    J-GLOBAL

  • 肘関節屈曲における筋張力と筋断面積指標の関係:安静時と最大等尺性筋活動時の比較

    赤木亮太, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 大腿四頭筋モーメントアーム長の推定方法間比較

    杉崎範英, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 一流短距離選手にみられる加速局面の脚スティフネスおよび関節スティフネスの変化

    小林海, 土江寛裕, 松尾彰文, 彼末一之, 礒繁雄, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • ヒトアキレス腱の形状と力発揮時の応力分布および局所変形との関係

    小田俊明, 姫野龍太郎, 栗原俊之, 金久博昭, 加藤えみか, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会   55 ( 6 )  2006

    J-GLOBAL

  • レジスタンストレーニングによる筋線維および腱組織の適応と筋腱複合体の力発揮特性との関係

    小田俊明, 長野明紀, 金久博昭, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 大学野球投手と未経験者における投球動作中の床反力の比較

    勝亦陽一, 丸山洋輔, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 膝関節角度が伸張性足底屈トルクに与える影響

    若原卓, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • ボート競技におけるローイング動作の特徴 -熟練者と未熟練者のキネマティクスおよびキネティクスの比較-

    四谷高広, 三好裕介, 光川眞壽, 小林海, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 漕運動の機械的効率とローイング動作との関係

    三好裕介, 四谷高広, 小林海, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 足関節底屈動作における下腿三頭筋の収縮動態

    佐久間淳, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 日常生活動作を利用したトレーニング動作の有用性

    高井洋平, 金久博昭, 川上泰雄, 福永哲夫

    第61回日本体力医学会大会   55 ( 6 )  2006

    J-GLOBAL

  • 最大等尺性足底屈反復時の筋疲労と筋束動態

    光川眞壽, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 等尺性収縮中の腓腹筋および前脛骨筋の筋形状の部位差

    栗原俊之, 金久博昭, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 筋疲労回復手段としてのスタティック・ストレッチングの効果

    金子潤, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 3ヶ月の自重負荷トレーニングが後期高齢者の身体機能に及ぼす影響

    境健吾, 設楽佳世, 伊原恵美子, 佐久間澄枝, 竹下香寿美, 川上泰雄, 福永哲夫

    第136回日本体力医学会関東地方会    2006

  • 肩回旋腱板筋群(ローテーターカフ)の3次元形態特性

    吉村達彦, 岩沼聡一郎, 光川眞壽, 村田浩一郎, 小田俊明, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 下腿後面の筋厚とアキレス腱の横断面積の関係

    岩沼聡一朗, 永吉俊彦, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 野球経験者と未経験者における投球の正確性の比較

    丸山洋輔, 勝亦陽一, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会    2006

  • 異なる強度の等尺性底屈トルク発揮が下腿三頭筋・腱の伸長性に及ぼす影響

    加藤えみか, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • 足関節可動域の性差および年代差とアキレス腱伸長の関係

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会   55 ( 6 )  2006

    J-GLOBAL

  • 和弓射術のパフォーマンス評価のためのパラメータの検討

    井出敦夫, 永吉俊彦, 加藤えみか, 光川眞壽, 小林海, 三好裕介, 栗原俊之, 千野謙太郎, 小田俊明, 彼末一之, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会    2006

  • Effect of muscle-tendon interaction on torque development of isometric tetanic contraction.

    Oda T, Kanehisa H, Fukunaga T, Kawakami Y

    5th World Congress of Biomechanics    2006

  • Load-specific distribution of muscle activity in human triceps surae muscles.

    Kinugasa R, Kawakami Y, Fukunaga T

    American College of Sports Medicine 53rd Annual Meeting    2006

  • Behavior of Achilles tendon and gastrocnemius aponeurosis during concentric and eccentric plantar flexions

    Kawakami Y, Sugisaki N, Chino K, Kanehisa H, Fukunaga T

    11th Annual Congress of the European College Of Sports Science    2006

  • Relationships between throwing velocity and muscle strength measures in Japanese baseball players

    Katsumata Y, Kawakami Y, Fukunaga T

    National Conference & Exhibition of National Strength & Conditioning Association 2006    2006

  • Changes in mechanical properties of Achilles tendon resulting from muscle contraction and stretching.

    Kato E, Fukunaga T, Kawakami Y

    5th World Congress of Biomechanics    2006

  • Effect of fascicle behavior on voluntary and electrically evoked eccentric torques.

    Chino K, Mitsukawa N, Kobayashi K, Miyoshi Y, Oda T, Kanehisa H, Fukunaga T, Fukashiro S, Kawakami Y

    5th World Congress of Biomechanics    2006

  • Plasticity of human tendon

    Fukunaga T, Kawakami Y

    5th World Congress of Biomechanics    2006

  • 94.野球選手における肘関節力発揮にみられる投手と野手の比較(運動器,一般口演,第60回 日本体力医学会大会)

    勝亦 陽一, 赤木 亮太, 美濃羽 弘樹, 川上 泰雄, 福永 哲夫

    体力科學   54 ( 6 )  2005.12

    CiNii J-GLOBAL

  • 筋厚と形態計測値の組み合わせによる筋形状指標と肘関節屈曲トルクとの関係

    赤木亮太, 勝亦陽一, 美濃羽弘樹, 川上泰雄, 福永哲夫

    体力科学   54 ( 6 ) 451  2005.12

    J-GLOBAL

  • スポーツ動作のバイオメカニクス ランニング,ジャンプ動作のバイオメカニクス

    川上泰雄

    整形・災害外科   48 ( 5 )  2005

    J-GLOBAL

  • 上肢反動動作パフォーマンスは上腕三頭筋腱の伸長特性を反映するか

    村田浩一郎, 太田めぐみ, 川上泰雄, 金久博昭, 福永哲夫

    第60回日本体力医学会大会    2005

  • アメリカンフットボールクォーターバックの投球動作の3次元解析

    川上泰雄, 金井健斗, 栗原俊之, 福永哲夫

    第18回日本トレーニング科学会    2005

  • 自重負荷トレーニングの効果が筋力及び関節トルクに与える影響 -高齢者のホーム貯筋術プロジェクト-

    小林寛, 山下耕平, 竹下香寿美, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会    2005

  • 陸上競技選手と野球選手の100m疾走の特徴

    小林海, 土江寛裕, 勝亦陽一, 磯繁雄, 彼末一之, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会    2005

  • 短縮性筋活動中の筋線維速度と筋速度の比較

    若原卓, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会    2005

  • アイシングがその後の運動中の筋酸素化動態と血流量に与える影響

    光川眞壽, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会    2005

  • 発育期における腓腹筋およびアキレス腱の形状

    栗原俊之, 金久博昭, 安部孝, 加藤えみか, 永吉俊彦, 福永哲夫, 川上泰雄

    発育発達・測定評価合同学会 日本発育発達学会第3回大会,日本体育測定評価学会第4回大会    2005

  • アキレス腱のどこが伸びるのか?

    永吉俊彦, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会    2005

  • 和弓における矢の飛翔エネルギーに関する研究

    井出敦夫, 永吉俊彦, 加藤えみか, 下田学, 光川眞壽, 小林海, 三好裕介, 小田俊明, 千野謙太郎, 依田玉枝, 彼末一之, 川上泰雄, 福永哲夫

    第18回日本トレーニング科学会    2005

  • 腓腹筋内側頭の筋活動分布の特性

    衣笠竜太, 川上泰雄, 福永哲夫

    第13回日本運動生理学会大会   13th  2005

    J-GLOBAL

  • Effects of knee joint angle on the force-length and velocity characteristics of gastrocnemius muscle.

    Wakahara T, Kanehisa H, Kawakami Y, Fukunaga T

    XXth Congress of the International Society of Biomechanics    2005

  • Isometric training alters mechanical properties of tendon structures.

    Ohta M, Katsumata Y, Murata K, Kanehisa H, Kawakami Y, Fukunaga T

    XXth Congress of the International Society of Biomechanics    2005

  • In vivo muscle fiber kinetics during tetanic contraction.

    Oda T, Kurihara T, Chino K, Kanehisa H, Nagayoshi T, Kato E, Fukunaga T, Kawakami Y

    XXth Congress of the International Society of Biomechanics    2005

  • Three-dimensional architecture of human gastrocnemius and tibialis anterior muscles during isometric actions.

    Kurihara T, Oda T, Chino K, Nagayoshi T, Kato E, Kanehisa H, Fukunaga T, Kawakami Y

    XXth Congress of the International Society of Biomechanics    2005

  • Repetitive muscle contractions induce mechanical changes of Achilles tendon.

    Kato E, Oda T, Chino K, Kurihara T, Nagayoshi T, Fukunaga T, Kawakami Y

    XXth Congress of the International Society of Biomechanics    2005

  • 04-26-ダンス-30 下肢の自重負荷トレーニングが歩行・走行パワーに及ぼす影響 : 高齢者のホーム貯筋術プロジェクト(04 運動生理学,一般研究発表)

    高田 佑輔, 赤木 亮太, 竹下 香寿美, 金久 博昭, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   56 ( 0 )  2005

    CiNii

  • 04-26-ダンス-31 下肢の自重負荷トレーニングが高齢者の脚伸展パワーに与える効果 : 高齢者のホーム貯筋術プロジェクト(04 運動生理学,一般研究発表)

    永吉 俊彦, 赤木 亮太, 竹下 香寿美, 金久 博昭, 福永 哲夫, 川上 泰雄

    日本体育学会大会予稿集   56 ( 0 )  2005

    CiNii

  • 04-26-ダンス-32 自重を利用した筋力トレーニングが身体機能に与える影響 : 高齢者のホーム貯筋術プロジェクト(04 運動生理学,一般研究発表)

    太田 めぐみ, 赤木 亮太, 竹下 香寿美, 金久 博昭, 川上 泰雄, 福永 哲夫

    日本体育学会大会予稿集   56 ( 0 )  2005

    CiNii

  • 収縮中のひ腹筋および前けい骨筋の羽状角の3次元計測

    栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    体力科学   53 ( 6 )  2004

    J-GLOBAL

  • ヒト前けい骨筋における単収縮/強縮比とけん組織の力学的特性との関連

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    体力科学   53 ( 6 )  2004

    J-GLOBAL

  • 6週間の等尺性筋力発揮トレーニングに伴う肘屈曲トルク及び上腕屈筋群筋厚の変化

    東香寿美, 勝亦陽一, 高井洋平, 赤木亮太, 川上泰雄, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • 大腿部の筋量推定方法に関する検討

    太田めぐみ, 宮谷昌枝, 東香寿美, 石黒憲子, 増尾善久, 金久博昭, 川上泰雄, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • 強縮後の単収縮増強と筋線維動態の関連性

    川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫

    第18回日本バイオメカニクス学会大会    2004

  • トッププロとアマチュアのゴルフスィングの比較

    川上泰雄, 井出敦夫, 野澤むつこ, 永吉俊彦, 小林海, 小田俊明, 千野謙太郎, 栗原俊之, 加藤えみか, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • 動的筋力発揮における腓腹筋の腱膜および外部腱の動態

    杉崎範英, 金久博昭, 川上泰雄, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • 刺激から関節トルク発揮に至るまでの人体筋の収縮様相の実測

    小田俊明, 千野謙太郎, 栗原俊之, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    日本体育学会東京支部第31回学会大会    2004

  • ヒト前脛骨筋における単収縮中の張力および筋線維長の経時変化

    小田俊明, 栗原俊之, 千野謙太郎, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第18回日本バイオメカニクス学会大会    2004

  • 力の立ち上がり局面の筋線維張力を決定する因子の経時変化

    小田俊明, 栗原俊之, 千野謙太郎, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第17回 トレーニング科学研究会    2004

  • ヒト前脛骨筋における強縮/単収縮比と腱組織の力学特性との関連

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博明, 福永哲夫, 川上泰雄

    第59回日本体力医学会    2004

  • 6週間の等尺性筋力発揮トレーニングに伴うトルクと筋電図の変化

    勝亦陽一, 東香寿美, 高井洋平, 赤木亮太, 川上泰雄, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • 上肢の反動効果利用時の力発揮能力と投球速度の関係

    山下耕平, 東香寿美, 川上泰雄, 福永哲夫

    第17回 トレーニング科学研究会    2004

  • アメリカンフットボールのファンダメンタルヒットに関するバイオメカニクス的研究

    栗原俊之, 村井雄太, 金井建斗, 永吉俊彦, 加藤えみか, 井出敦夫, 小田俊明, 川上泰雄

    第17回 トレーニング科学研究会    2004

  • 収縮中の腓腹筋および前脛骨筋の羽状角の3次元計測

    栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博明, 福永哲夫, 川上泰雄

    第59回日本体力医学会    2004

  • 筋音図解析によるCatchlike property発生機序の解明

    吉武康栄, 川上泰雄, 金久博昭, 福永哲夫

    第59回日本体力医学会   53 ( 6 )  2004

    J-GLOBAL

  • 長時間の静的ストレッチングが下腿三頭筋の伸長に及ぼす急性効果

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 福永哲夫, 川上泰雄

    第59回日本体力医学会    2004

  • 足関節の静的ストレッチング中にアキレス腱が伸長する

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 福永哲夫, 川上泰雄

    第17回 トレーニング科学研究会    2004

  • 筋力発揮時におけるアキレス腱長の実測

    永吉俊彦, 小田俊明, 千野謙太郎, 福永哲夫, 川上泰雄

    第18回日本バイオメカニクス学会大会    2004

  • 和弓の「離れ」における射手の押し手の挙動に関する研究

    井出敦夫, 下田 学, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 加藤えみか, 小西あき, 福永哲夫, 川上泰雄

    第17回 トレーニング科学研究会    2004

  • 3D-muscle functional MRIを用いた収縮様式の違いによる下腿三頭筋の筋活動特性の比較

    衣笠竜太, 川上泰雄, 福永哲夫

    第59回日本体力医学会    2004

  • Muscle functional MRIによる筋活動の3次元可視化

    衣笠竜太, 川上泰雄, 福永哲夫

    第12回日本運動生理学会大会   12th  2004

    J-GLOBAL

  • Localization of three-dimensional distribution of muscle activation using muscle functional magnetic resonance imaging

    Kinugasa R, Kawakami Y, Fukunaga T

    XVth Congress of the International Society of Electrophysiology and Kinesiology    2004

  • muscle functional MRIによる3次元T2 mappingの試み

    衣笠竜太, 川上泰雄, 福永哲夫

    体力科学   52 ( 6 )  2003

    J-GLOBAL

  • ベッドレストによる足関節可動域および筋腱複合体の受動伸長性の変化.

    川上泰雄, 加藤えみか, 栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫

    日本体育学会第54回大会    2003

  • 等速性運動中の下腿三頭筋の筋線維動態には筋腱相互作用が多大な影響を及ぼす.

    千野謙太郎, 小田俊明, 栗原俊之, 永吉俊彦, 金久博昭, 深代千之, 川上泰雄, 福永哲夫

    日本体育学会第54回大会    2003

  • ヒト骨格筋線維の長さ?力特性は収縮強度によって変化する

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    第58回日本体力医学会大会   52 ( 6 )  2003

    J-GLOBAL

  • ヒト下腿三頭筋の単収縮加重による発揮張力と筋線維長変化との関係

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第54回大会    2003

  • 3次元超音波法を用いたヒト前脛骨筋体積の生体内計測

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫

    日本体育学会第54回大会    2003

  • バレエダンサーの足関節の特徴 ―足関節可動域と下腿三頭筋・腱の伸長に着目して―.

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 川上泰雄

    第16回トレーニング科学研究会    2003

  • In vivo measurement of human tibialis anterior muscle volume using three dimentional ultrasonography

    Kurihara T, Kawakami Y, Nagayoshi T, Oda T, Chino K, Kanehisa H, Fukunaga T

    XIX ISB Congress in Dunedin、 New Zealand of the International Society of Biomechanics.    2003

  • In Vivo Muscle Fiber Behavior of the Gastocnemius and Soleus during Twitch and Twitch Summation in Humans.

    Kawakami Y, Oda T, Chino K, Kurihara T, Nagayoshi T, Kanehisa H, Fukunaga T

    World Congress on Medical Physics and Biomedical Engineering.    2003

  • In vivo force-velocity relationship of the human triceps brachii muscles.

    Kawakami Y, Kurihara T, Oda T, Chino K, Nagayoshi T, Kanehisa H, Fukunaga T, Toji H, Kaneko M

    XIX ISB Congress in Dunedin、 New Zealand of the International Society of Biomechanics.    2003

  • Velocity of Shortening and Lengthening of Gastrocnemius and Soleus Muscle Fibers During Concentric and Eccentric Plantar Flexions in Humans.

    Chino K, Oda T, Kurihara T, Nagayoshi T, Kato E, Kawakami Y, Kanehisa H, Fukunaga T

    World Congress on Medical Physics and Biomedical Engineering.    2003

  • 収縮中のヒトひ腹筋形状 超音波法による三次元構築

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 福永哲夫

    体力科学   51 ( 5 )  2002

    J-GLOBAL

  • レジスタンストレーニングが中高齢女性のけん組織の粘弾性に及ぼす影響

    久保啓太郎, 金久博昭, 川上泰雄

    健康医科学研究助成論文集   ( 17 )  2002

    J-GLOBAL

  • Research on muscle damage by extensibility muscular activity and characteristic change of the musculotendon complex.

    川上泰雄

    上原記念生命科学財団研究報告集   16  2002

    J-GLOBAL

  • ヒト生体における筋収縮時のひ腹筋・前けい骨筋のけん膜伸長特性

    村松憲, 村岡哲郎, 川上泰雄, 福永哲夫

    体力科学   51 ( 5 )  2002

    J-GLOBAL

  • 骨格筋の形状と機能

    川上泰雄

    筋の科学事典     37 - 64  2002

    CiNii

  • ヒト生態における筋収縮時の腓腹筋・前脛骨筋の腱膜伸長特性

    村松憲, 村岡哲郎, 川上泰雄, 福永哲夫

    第125回日本体力医学会関東地方会    2002

  • 筋収縮に伴うアキレス腱の配列変化は筋腱接合部をどの程度移動させるのか?

    村松 憲, 村岡哲郎, 川上泰雄, 福永哲夫

    第17回日本バイオメカニクス学会大会    2002

  • ヒト生体における筋収縮時のアキレス腱伸張率の算出

    村松 憲, 村岡哲郎, 川上泰雄, 福永哲夫

    第10回日本運動生理学会大会    2002

  • 伸張性筋活動の繰り返しによる骨格筋の力発揮特性の変化

    川上泰雄, 栗原俊之, 千野謙太郎, 小田俊明, 野坂和則, 福永哲夫

    日本体育学会第53回大会    2002

  • 上腕三頭筋の力?速度関係のin vivo計測の試み

    川上泰雄, 栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 中井敬子, 金久博昭, 田路秀樹, 金子公宥, 福永哲夫

    第17回日本バイオメカニクス学会    2002

  • 単収縮および単収縮加算時におけるヒト生体内の腓腹筋・ヒラメ筋の筋線維動態

    小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 中井敬子, 川上泰雄, 福永哲夫

    第17回日本バイオメカニクス学会    2002

  • 収縮中のヒト腓腹筋形状:超音波法による三次元構築

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 福永哲夫

    第125回日本体力医学会関東地方会    2002

  • 三次元超音波法を利用した筋体積推定法の検討

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫

    第17回日本バイオメカニクス学会    2002

  • 電気刺激誘発の筋収縮における刺激パターンと張力および筋腱複合体の関係.

    吉武康栄, 川上泰雄, 栗原俊之, 金久博昭, 福永哲夫

    第57回日本体力医学会大会    2002

  • 筋力を推定する際の生理学的筋横断面積の有効性について

    永吉俊彦, 小田俊明, 千野謙太郎, 栗原俊之, 中井敬子, 川上泰雄, 福永哲夫, 前田雅人, 丸山敦夫

    第17回日本バイオメカニクス学会    2002

  • Behaviours of muscle-tendon complex during electrical stimulation with trains of linearly varying frequency in humans.

    Yoshitake Y, Kawakami Y, Kanehisa H, Fukunaga T

    4th World Congress of Biomechanics    2002

  • In vivo measurement of tendon elongation and fascicle length change during tensional summation.

    Oda T, Chino K, Kurihara T, Kawakami Y, Fukunaga T

    4th World Congress of Biomechanics    2002

  • Comparison between 2D and 3D ultrasonography for determining human skeletal muscle architecture.

    Kurihara T, Kawakami Y, Oda T, Chino K, Fukunaga T

    Banff Symposium on Skeletal Muscle    2002

  • Architecture of contracting human gastrocnemius muscle: an approach from three-dimensional ultrasound imaging.

    Kurihara T, Kawakami Y, Oda T, Chino K, Fukunaga T

    4th World Congress of Biomechanics    2002

  • Different fatigue responses of triceps surae muscles to repeated isometric contractions revealed by in vivo fascicle length changes.

    Kawakami Y, Shimoda M, Oishi Y, Oda T, Chino K, Kurihara T, Kanehisa H, Fukunaga T

    Banff Symposium on Skeletal Muscle    2002

  • Changes in mechanical properties of human tibialis anterior muscle following repeated eccentric contractions.

    Kawakami Y, Kurihara T, Chino K, Oda T, Nosaka K, Fukunaga T

    4th World Congress of Biomechanics    2002

  • In vivo muscle fiber behavior of the triceps surae muscles during isokinetic concentric plantar flexions.

    Chino K, Oda T, Kurihara T, Kawakami Y, Kanehisa H, Fukunaga T

    Banff Symposium on Skeletal Muscle    2002

  • In vivo muscle fiber behavior of the triceps surae muscles during concentric and eccentric plantar flexions.

    Chino K, Oda T, Kawakami Y, Kanehisa H, Fukunaga T

    4th World Congress of Biomechanics    2002

  • In vivo estimation of behavior of muscle fiber and tendon during human movements.

    Fukunaga T, Kawakami Y, Kubo K, Kanehisa H

    Banff Symposium on Skeletal Muscle    2002

  • Muscle and tendon relations in humans: power enhancement in counter-movement exercise.

    Fukunaga T, Kawakami Y, Muraoka T, Kanehisa H

    Adv Exp Med Biol.   508   501 - 505  2002

  • In vivo behaviour of human muscle tendon during walking

    Tetsuo Fukunaga, Keitaro Kubo, Yasuo Kawakami, Senshi Fukashiro, Hiroaki Kanehisa, Constantinos N. Maganaris

    Proceedings of the Royal Society of London. Series B: Biological Sciences   268 ( 1464 ) 229 - 233  2001.02  [Refereed]  [International journal]  [International coauthorship]

    DOI

  • 3ケ月のローイング・トレーニングが若年成人の有酸素性能力および血中脂質・リポ蛋白プロフィールに及ぼす影響

    吉賀千恵, 樋口満, 岡純, 川上泰雄, 柳沢香絵

    日本運動生理学会大会プログラム・抄録集   9th  2001

    J-GLOBAL

  • 軽量級ボート選手のローイング・パフォーマンスに関連する身体的・生理学的諸因子

    樋口満, 吉賀千恵, 川上泰雄, 松下雅雄

    日本運動生理学会大会プログラム・抄録集   9th  2001

    J-GLOBAL

  • 異なる収縮間インターバルでの反復運動が共働筋の筋束動態と筋収縮力に及ぼす影響

    大石芳江, 下田学, 川上泰雄, 池川繁樹, 金久博昭, 福永哲夫

    体力科学   50 ( 6 )  2001

    J-GLOBAL

  • 中高年ボート選手の身体組成と呼吸循環器系機能

    吉賀千恵, 樋口満, 岡純, 松下雅雄, 川上泰雄

    体力科学   50 ( 6 )  2001

    J-GLOBAL

  • 人間の身体運動に及ぼす筋腱複合体の特性の影響に関する総合的研究

    川上泰雄, 金久博昭, 深代千之, 久保啓太郎

    立石科学技術振興財団助成研究成果集   ( 10 )  2001

    J-GLOBAL

  • Muscle fiber and tendon length changes in the human vastus lateralis during slow pedaling

    Muraoka T, Kawakami Y, Tachi M, Fukunaga T

    J Appl Physiol   91   2035 - 2040  2001

  • Influences of repetitive muscle contractions with different modes on tendon elasticity in vivo

    Kubo K, Kanehisa H, Kawakami Y, Fukunaga T

    J Appl Physiol   91   277 - 282  2001

  • Influences of repetitive muscle contractions with different modes on tendon elasticity in vivo

    Kubo K, Kanehisa H, Kawakami Y, Fukunaga T

    J Appl Physiol   90   520 - 527  2001

  • Growth changes in the elastic properties of human tendon structures

    Kubo K, Kanehisa H, Kawakami Y, Fukunaga T

    Int J Sports Med.   22   138 - 143  2001

    DOI

  • Effects of repeated muscle contractions on the tendon structures in humans

    Kubo K, Kanehisa H, Kawakami Y, Fukunaga T

    Eur J Appl Physiol.   84   162 - 166  2001

    DOI

  • Muscle volume is a major determinant of joint torque in humans

    Fukunaga T, Miyatani M, Tachi M, Kouzaki M, Kawakami Y, Kanehisa H

    Acta Physiol.Scand.   172   249 - 255  2001

    DOI

  • Rule Acquisition by Fuzzy Modeling for Improving Rowers’ Performance.

    橘完太, 古橋武, 下田学, 川上泰雄, 福永哲夫

    インテリジェント・システム・シンポジウム講演論文集   10th  2000

    J-GLOBAL

  • 力の発揮様式における違いがけん組織の弾性特性に及ぼす影響 一時的及び長期的な変化

    久保啓太郎, 金久博昭, 川上泰雄, 福永哲夫

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • 反動動作を伴った足底屈運動中にけん組織の伸張-短縮が生じる

    川上泰雄, 村岡哲郎, 伊藤栄, 金久博昭, 福永哲夫

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • Effects of Short-term Bed Rest on Skeletal Muscle Properties in Young Men.

    川上泰雄, 久保啓太郎, 深代千之, 金久博昭

    デサントスポーツ科学   21  2000

    J-GLOBAL

  • 筋形状の実測による大腿四頭筋の固有筋力

    安部孝, 熊谷賢哉, 伊藤雅充, 川上泰雄, 福永哲夫

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • 身体運動における筋けん複合体の動態 間接動作と筋線維動態との相互作用

    福永哲夫, 川上泰雄, 久保啓太郎

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • ボート選手の呼吸循環系機能および筋力と2000mローイング・パフォーマンスとの関係

    樋口満, 吉賀千恵, 松下雅雄, 田畑泉, 岡村浩嗣, 川上泰雄

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • ボート選手のトレッドミルおよびローイング・エルゴメータによる漸増負荷試験に対する呼吸循環系応答

    吉賀千恵, 松下雅雄, 田畑泉, 岡村浩嗣, 川上泰雄, 樋口満

    日本運動生理学会大会プログラム・抄録集   8th  2000

    J-GLOBAL

  • 静的ストレッチングがけん組織の粘弾性に及ぼす影響

    久保啓太郎, 金久博昭, 川上泰雄, 福永哲夫

    体力科学   49 ( 6 )  2000

    J-GLOBAL

  • ボート選手の呼吸循環系機能および筋力とローイング・エルゴメータ漕パフォーマンスとの関係

    吉賀千恵, 樋口満, 田畑泉, 岡村浩嗣, 川上泰雄

    体力科学   49 ( 6 )  2000

    J-GLOBAL

  • Anthropometric and physiological factors predicting 2000 m rowing ergometer performance time

    Yoshiga C, Kawakami Y, Fukunaga T, Okamura K, Higuchi M

    Adv Exrc Sports Physiol   6 ( 2 ) 51 - 57  2000

  • Muscle fiber behavior in human walking.

    久保啓太郎, 川上泰雄, 福永哲夫

    バイオメカニズム   15   97 - 105  2000

    DOI J-GLOBAL

  • 競技力向上の視点および健康増進の視点から見たローイング運動

    吉賀千恵, 川上泰雄, 福永哲夫, 岡村浩嗣, 樋口満

    体力科学   48 ( 6 )  1999

    J-GLOBAL

  • Visco-elastic properties of tendon structures in human medial gastrocnemius muscle.

    久保啓太郎, 川上泰雄, 金久博昭, 福永哲夫

    体力科学   48 ( 5 )  1999

    J-GLOBAL

  • Research on the improvement of playing capability event by event (21st report). The boat. Mechanical measuring device of the boat and dynamic data in rowing.

    下田学, 川上泰雄, 福永哲夫

    日本体育協会スポーツ科学研究報告集   1997 ( Vol.1 )  1998

    J-GLOBAL

  • Research on the improvement of playing capability event by evene (21st report). Boat. Relationship between rowers’ force and acceleration change of the boat.

    下田学, 川上泰雄, 福永哲夫

    日本体育協会スポーツ科学研究報告集   1997 ( Vol.1 )  1998

    J-GLOBAL

  • Effect of bed rest on functional and morphological characteristics of human muscle(Symposium I)

    Fukunaga Tetsuo, Funato Kazuo, Kawakami Yasuo, Akima Hiroshi

    Proceedings of the ... Symposium on Human-Environment System   21   5 - 8  1997.12

    CiNii

  • 関節角度と随意最大筋力の関係における男女差

    川上 泰雄, 柳谷 登志雄, 福永 哲夫

    日本体育学会大会号   48 ( 48 )  1997.08

    CiNii

  • Research on the improvement of playing capability event by event (20th report). Boat. Acceleration and speed change during the game.

    下田学, 川上泰雄, 福永哲夫

    日本体育協会スポーツ科学研究報告集   1996 ( Vol.1 )  1997

    J-GLOBAL

  • Research on the improvement of playing capability event by event (20th report). Boat. Acceleration and speed change at the starting stage.

    下田学, 川上泰雄, 福永哲夫

    日本体育協会スポーツ科学研究報告集   1996 ( Vol.1 )  1997

    J-GLOBAL

  • Transition and approach of the exercise tolerance test method. 4. Isometric exercise and isotonic (dynamic) exercise.

    川上泰雄

    臨床スポーツ医学   14 ( 4 )  1997

    J-GLOBAL

  • Architecture and sport of the muscle.

    福永哲夫, 川上泰雄

    日本生理人類学会大会抄録集   37th  1997

    J-GLOBAL

  • Research on the improvement of playing capability event by event (20th report). Boat. Examination on the training effect of university boat players.

    下田学, 川上泰雄, 福永哲夫

    日本体育協会スポーツ科学研究報告集   1996 ( Vol.1 )  1997

    J-GLOBAL

  • Effects of aerobic exercise training on visceral and subcutaneous fat distributions in moderate obese women.

    安部孝, 桜井智野風, 板井もりえ, 川上泰雄, 福永哲夫

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • Total and segmental subcutaneous adipose tissue volumes in young women: Estimation and verification.

    安部孝, 川上泰雄, 吉川宏起, 田中史子, 福永哲夫

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • Sex differences in visceral and subcutaneous fat distribution based on B-mode ultrasound.

    福永哲夫, 安部孝, 川上泰雄, 近藤正勝, 深代千之

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • Age changes in visceral and subcutaneous fat distribution based on B-mode ultrasound.

    福永哲夫, 安部孝, 川上泰雄, 近藤正勝, 深代千之

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • Comparative studies on visceral and subcutaneous fat distributions between Okinawa and Hokkaido residents.

    福永哲夫, 安部孝, 川上泰雄, 近藤正勝, 田中史子, 市之瀬慈歩, 深代千之

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • Relationships between visceral and subcutaneous fat distribution and serum lipoproteins in healthy men and women.

    安部孝, 田中史子, 川原貴, 川上泰雄, 福永哲夫

    日本人の内臓脂肪量に関する総合調査研究 平成5-6年度 性差、加齢変化、地域差、成人病との関連 No.05304048    1995

    J-GLOBAL

  • MRI法による内臓脂肪断面積と皮下脂肪量の部位比

    安部孝, 近藤正勝, 吉川宏起, 川上泰雄, 福永哲夫

    日本生理人類学会大会抄録集   32nd  1994

    J-GLOBAL

  • 内臓蓄積脂肪量の加齢変化: 若年女性と中年女性の比較

    桜井智野風, 安部孝, 近藤正勝, 川上泰雄, 福永哲夫

    日本生理人類学会大会抄録集   32nd  1994

    J-GLOBAL

  • 233.運動トレーニングによって内臓脂肪量は減少する

    安部 孝, 板井 もりえ, 川上 泰雄, 杉田 正明, 福永 哲夫

    体力科學   42 ( 6 ) 683 - 683  1993.12

    CiNii

  • 362.レジスタンストレーニング効果の特異性 : ウェイトリフターとボディビルダーの比較

    船渡 和男, 福永 哲夫, 川上 泰雄, 杉田 正明, 矢田 秀昭, 岡田 純一, 小沢 治夫, 田中 泰博

    体力科學   42 ( 6 ) 747 - 747  1993.12

    CiNii

  • 418.一流陸上競技(女子)選手の身体的特性について

    杉田 正明, 安部 孝, 八田 秀雄, 川上 泰雄, 福永 哲夫, 小林 寛道, 原田 康弘

    体力科學   41 ( 6 ) 859 - 859  1992.12

    CiNii

  • Development of Measurement System for Estimation of Sport Athletic Performances.

    福永哲夫, 松尾彰文, 安部孝, 川上泰雄, 沼沢秀雄, 深代千之

    スポーツ医・科学   5 ( 2 )  1991

    J-GLOBAL

  • The measurement of power output exerted with various physical movements.

    福永哲夫, 松尾彰文, 船渡和男, 川上泰雄, 沼沢秀雄

    人間工学   27 ( Suppl )  1991

    J-GLOBAL

  • Reproducibility of muscle force during eccentric and concentric action.

    池川繁樹, 川上泰雄, 金久博昭, 福永哲夫

    体力科学   39 ( 6 )  1990

    J-GLOBAL

  • Changes in concentric and eccentric strength and EMG induced by muscle fatigue.

    川上泰雄, 福永哲夫, 宮下充正, 金久博昭, 池川繁樹

    体力科学   39 ( 6 )  1990

    J-GLOBAL

  • Comparison of strength of elbow/knee flexors/extensors in 3 contraction modes.

    川上泰雄, 福永哲夫, 宮下充正, 金久博昭, 奥山秀雄, 池川繁樹

    体力科学   38 ( 6 )  1989

    J-GLOBAL

  • Strength and cross-sectional area in eccentric contraction.

    池川繁樹, 角田直也, 金久博昭, 奥山秀雄, 川上泰雄, 船渡和男, 福永哲夫

    体力科学   38 ( 6 )  1989

    J-GLOBAL

  • Characteristics of Eccentric Strength of Untrained and Athletes.

    福永哲夫, 金久博昭, 川上泰雄, 奥山秀雄

    スポーツ医・科学   3 ( 1 )  1989

    J-GLOBAL

  • Development of exercise testing system for exercise prescription to ischemic heart disease patients.

    山本義春, 浜本紘, 武藤芳照, 杢子耕一, 田村真一, 川上泰雄

    体力研究   ( 69 )  1988

    J-GLOBAL

▼display all

Industrial Property Rights

  • 2足歩行ロボットの移動制御システム

    6311153

    高西 淳夫, 川上 泰雄, 橋本 健二, 阪口 正律, 大谷 拓也, 飯塚 晃弘, 八原 昌亨, 瓜生 和寛, 宮前 俊介, 濱元 伸也

    Patent

Works

  • Changes in architectural and functional characteristics during growth

    1993
    -
     

Other

  • Paper on elite athletes' performance accepted for publication

    2022.01
    -
    Now

     View Summary

    Our paper on elite athletes including Olympians has been accepted for publication.

    Yamagishi, T., Saito, A., Kawakami, Y. Determinants of whole-body maximal aerobic performance in young male and female athletes: The roles of lower extremity muscle size, strength and power, PLoS One, 17(1): e0262507.

    journals.plos.org/plosone/article?id=10.1371/journal.pone.0262507

  • Paper on children's musculature and strength characteristics was published

    2021.12
    -
    Now

     View Summary

    Research work on children based on the collaborative work with ASICS Corporation has been published.

    Characteristics of inhomogeneous lower extremity growth and devolopment in early childhood:a cross-sectional study. Apibantaweesakul, S, Omura, S, Qi, W, Shiotani H, Evangelidis, P, E, Sado, N, Tanaka, F, Kawakami, Y. BMC Pediatr. 21, 552, 2021

  • Government funding: KAKENHI [Grant-in-Aid for Scientific Research (S)] accepted

    2021
    -
    Now

     View Summary

    Professor Atsuo Takanishi (Faculty of Science and Engineering) have won the government grant KAKENHI [Grant-in-Aid for Scientific Research (S)] (2021-2025). Kawakami will act as a co-investigator in charge of human studies for optimizing movement performance.

Awards

  • 日本バイオメカニクス学会 国際セッション奨励賞(共同研究者)

    2020.09   日本バイオメカニクス学会  

  • 日本トレーニング科学会 奨励賞(共同研究者)

    2019.09   日本トレーニング科学会  

  • 日本バイオメカニクス学会 奨励賞(共同研究者)

    2018.09   日本バイオメカニクス学会  

  • 日本バイオメカニクス学会 学会賞(共同研究者)

    2016.09   日本バイオメカニクス学会  

  • バイオメカニクス研究最優秀論文賞(共著者)

    2015.09   日本バイオメカニクス学会  

  • 東京体育学会 奨励賞(共同研究者)

    2013.03   東京体育学会  

  • トレーニング科学研究会 奨励賞(共同研究者)

    2012.12   日本トレーニング科学会  

  • トレーニング科学研究賞 奨励賞(共同研究者)

    2011.11   日本トレーニング科学会  

  • 東京体育学会 奨励賞(共同研究者)

    2010.03   東京体育学会  

  • 日本トレーニング科学会 学会賞

    2007.11   日本トレーニング科学会  

  • 東京体育学賞 (前任校)

    2002.03   東京体育学会  

  • 松井賞(日本バイオメカニクス学会) (前任校)

    1992.10   日本バイオメカニクス学会  

▼display all

Research Projects

  • Unravelling the Mechanisms of Muscle Strain Injuries: Toward Injury Prevention, Rehabilitation, and Athletic Performance

    日本学術振興会  科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B))

    Project Year :

    2021.10
    -
    2025.03
     

    川上泰雄, 平井宗一, 若原卓, 塩谷彦人

  • サルコペニアの早期発見バイオマーカーの探索と新しいトレーニング評価技術の確立

    Project Year :

    2018.04
    -
    2022.03
     

     View Summary

    老化とともに生体内の骨格筋組織の量と質が減少することはサルコペニアと定義され、その診断ガイドラインが2010年より、国際的に作成されるようになってきた。本研究では、生体電気インピーダンス法を用いたサルコペニアの早期発見バイオマーカーを確立させることを第一の目的として研究を実施してきている。2018年には、ヨーロッパのサルコペニア診断ガイドラインが改訂され、2019年にはアジアのサルコペニア診断ガイドラインも改訂された。研究代表者が長年研究を進めてきた生体電気インピーダンス法は、サルコペニア診断の筋量評価における有用なツールとして、どちらのサルコペニア診断ガイドラインにおいてもその利用について言及され、特に2018年のヨーロッパのサルコペニア診断ガイドラインにおいては、研究代表者の主要論文が代表論文として引用されるなど、サルコペニア評価において、本研究の重要性が高まっている。昨年度、実際に高齢者の筋内組成が加齢に伴ってどのように変化するかについて調査を行い、いくつかのS-BISパラメータが加齢や筋力と関連していることが明らかにし、研究結果を複数の原著論文として発表することができた。今年度は、核磁気共鳴画像法(MRI)との比較研究を若齢者・高齢者で大規模な人数で実施することができ、さらに、安定同位体トレーサー技術を用いた方法との比較研究についても、海外研究機関との共同研究により結果を得ることが出来た。次年度以降は、得られたデータの解析を進め、論文化を進めていくものとする。予定している実験について、2019年度中におおよそ終えることができ、翌年度以降、丁寧な解析に時間を費やすことが出来る見込みである。今年度までの実験について、共同研究機関・研究分担機関を含め、おおむね順調に実施することができ、貴重なデータを得ることが出来た。そのため、翌年度以降、データ解析に時間をかけ、丁寧な分析を行うとともに、研究分担者らと協働しながら、本研究の目標達成のため、研究成果を発信していくものとする

  • Load distribution within the contracting hamstring muscles: relevance to strain injuries in sport

    Project Year :

    2017.11
    -
    2020.03
     

  • Evaluation of form-quality-function aspects of skeletal muscles: toward remarkable upgrading of physical movement performance for ordinary individuals and elite athletes

    Project Year :

    2016.04
    -
    2020.03
     

  • Evaluation of visceral and subcutaneous adiposity in humans: 3D analysis and establishment of prediction equations

    Project Year :

    2016.04
    -
    2019.03
     

  • 人には存在しない下肢の筋肉部位への人工筋装着による足先出力特性への影響

    Project Year :

    2016.04
    -
    2018.03
     

     View Summary

    高負荷作業を支援する身体装着型ロボットの多くは,大きな力を発揮する一関節筋の機能に基づいて設計されている.一方本研究では,拮抗する複数の筋肉の協調により,力の伝達方向調整や外力に対する姿勢維持などの機能を実現する,2つの関節に跨って位置している二関節筋に着目する.そこで,有蹄類には存在するが人には存在していない,腓腹筋と拮抗関係にある脛前面の部位に人工筋を装着し,それによる足先出力への影響を調査する.平成28年度においては,足関節と膝関節を跨ぐように装着する人工筋により力を付与した際の,足先で発揮する力,ならびに外部から力を加えた際の足先位置の変化のしにくさを調査する実験システムの開発に取り組んだ.主に,制御可能な牽引力を付与する人工筋アクチュエータ,所定の位置に各関節を固定するための足・膝関節角度調節機構,そして足先に外部から力を与える機構を開発した.人工筋アクチュエータにおいては,静的状態における実験を想定していることから,ギヤドモータの軸に取り付けたボールねじにより回転運動を直線運動に変換し,ワイヤを介して張力を下肢に伝達する機構を構築した.なおワイヤと身体への締結ユニットとの間には張力制御用のロードセルを組み込んだ.そして足・膝関節角度調節機構においては,各回転軸周辺の構造材に一定間隔で穴を開け,そこにピンを差し込むことで容易な関節角度の調節を可能とした.足先位置には,足先の力の大きさと方向を計測する6軸力センサを組み込めるようにした.また,外力付与機構は,ギヤドモータの回転軸に取り付けたドラムにワイヤを巻きつけることで,ワイヤを牽引して足先に外力を付与する仕組みとし,プーリ位置を変更することで牽引角度を調節可能とした.以上により,人工筋装着による足先出力特性への影響を調査するための,実験システムの基本構造を構築した.有蹄類には存在するが人には存在していない下肢部位に人工筋を装着することで,A.足先で発揮する力の大きさと方向への影響と,B.足先への外力付与による足先位置の変位のしにくさ(剛性)への影響を明らかにし,C.アクチュエータ出力,足・膝関節角度,足先出力の関係モデルを構築して,新たな動作支援の方法を示すことが本研究のねらいである.当初の計画では,平成28年度は上述したAの課題,平成29年度はB,Cの課題と分けて進める基本方針であったが,A,Bの課題で共通する実験システムの開発が順調に進んだことから,Bの課題で使用する実験システムも平成28年度において先んじて開発することにした.Aの課題における人を対象とした主たる実験は平成29年度に実施するものの,実験デザインの検討は進んでおり,また平成29年度に開発予定であった実験システムも概ね構築できていることから,順調に進んでいるといえる.平成28年度に構築した実験システムを利用して,人工筋アクチュエータの張力付与により,①足先で発揮する力の大きさと方向への影響を調査する実験,また,②足先への外力付与による足先位置の変位のしにくさへの影響を調査する実験を実施する.人を対象とした実験をより円滑に進めるため,ユーザビリティを考慮した実験システムへの改善をはじめに行い,予備実験により各種条件を明らかにした上で実施する予定である.そして,これらの実験によって得られる,人工筋アクチュエータの張力,付与する外力,足・膝関節角度,筋活動量,足先の力,足先の変位量の関係を,一関節筋・二関節筋それぞれの拮抗関係を考慮した筋構造配列モデルを参照して整理し,足先出力特性モデルの構築に取り組む.また,本研究に関する成果に関し学会発表を行う予定である.人を対象とした実験をより円滑に進めるため,ユーザビリティを考慮した実験システムへの改善に使用する

  • Mechanism and adaptability of human movement performance approached with in vivo measurement of musculotendinous behavior

    Project Year :

    2012.04
    -
    2015.03
     

     View Summary

    The purpose of this study was to evaluate the adaptability of muscle-tendon unit functions and reveal the mechanisms during human movements through the measurement of biological data. We disclosed dynamics of the muscle-tendon units and their mechanical properties in the lower limb during running by ultrasound apparatus and a three-dimensional motion analysis system. Regarding the phenomenon of post-activation potentiation, the contraction intensity, exercise velocity and intensity of conditioning contraction were found to influence the force-producing capacity of skeletal muscles and movement performances. Furthermore, we found morphological adaptation of the tendinous tissues to muscle hypertrophy by resistance training. This study clarified some important factors of movement performance and the mechanisms of their improvement through in vivo evaluation of the dynamics and adaptability of muscle-tendon units in humans

  • Why do muscle strain injuries occur frequently at a specific site of bi-articular muscles?

    Project Year :

    2012.04
    -
    2014.03
     

     View Summary

    The motor nerve of the bi-articular rectus femoris muscle is generally split from the femoral nerve trunk into two sub-branches just before it reaches the distal and proximal regions of the muscle. The purpose of the present study was to examine whether the regional difference in muscle activities exists within the human rectus femoris muscle during maximal voluntary isometric contractions of knee extension and hip flexion. Surface electromyographic signals were recorded from the distal, middle, and proximal regions. There was no significant difference in the normalized electromyographic amplitude during knee extension among regions within the rectus femoris muscle, whereas those were significantly smaller in the distal than in the middle and proximal regions during hip flexion task. These results indicate that the bi-articular rectus femoris muscle is differentially controlled along the longitudinal direction

  • 生体軟組織の形態的・力学的特性と身体機能の関係

    Project Year :

    2014
    -
     
     

  • 身体運動のメカニズムと適応性の解明:骨格筋・腱動態の生体計測によるアプローチ

    科学研究費助成事業(早稲田大学)  科学研究費助成事業(基盤研究(B))

    Project Year :

    2012
    -
    2014
     

     View Summary

    平成25年度は前年度に構築したBモード超音波法とモーショントラッキングシステムの併用による筋腱動態計測システムを用いて、足部を用いたホッピング動作を対象に、収縮中の筋腱複合体の筋線維動態および腱組織動態を計測した。平成26年度はこの方法論で反動動作による発揮パワー増強機構およびそのトレーニング効果についての研究を進める予定である。また、伸張性収縮中の筋線維動態を計測し、伸長による骨格筋張力増加機構に関して新たな知見を得ることができた。一連の研究は大学院生の修士論文として結実し、平成26年度に開催される国際学会で発表の予定である。さらに、超音波エラストグラフィを導入し、骨格筋・腱の力学的特性を計測するための予備的な実験を開始した。平成25年度の終盤には、高齢者を対象に、習慣的な運動実践が骨格筋の形態的・機能的特性に及ぼす影響に関して、3ヶ月の介入研究(体操プログラムの効果検証)を実施した。その結果、筋によって増加の程度が異なるという知見が得られ、被験者にフィードバックを行った。この知見によって、高齢者における骨格筋の形態的・機能的特徴についての研究の方向性が定まった。平成26年度にはさらに詳細な研究を実施する。

  • センサを用いたランニングパフォーマンス定量に関する研究

    Project Year :

    2013
     
     
     

  • Why do muscle strain injuries occur frequently at a specific site of bi-articular muscles?

    Project Year :

    2012
    -
    2013
     

     View Summary

    The motor nerve of the bi-articular rectus femoris muscle is generally split from the femoral nerve trunk into two sub-branches just before it reaches the distal and proximal regions of the muscle. The purpose of the present study was to examine whether the regional difference in muscle activities exists within the human rectus femoris muscle during maximal voluntary isometric contractions of knee extension and hip flexion. Surface electromyographic signals were recorded from the distal, middle, and proximal regions. There was no significant difference in the normalized electromyographic amplitude during knee extension among regions within the rectus femoris muscle, whereas those were significantly smaller in the distal than in the middle and proximal regions during hip flexion task. These results indicate that the bi-articular rectus femoris muscle is differentially controlled along the longitudinal direction.

  • 機能性チェアの効果検証

    Project Year :

    2010
    -
    2011
     

  • Pathogenesis and site specificity of delayed onset muscle soreness : toward training modality effective for strength gain while minimizing muscle soreness

    Project Year :

    2009
    -
    2011
     

     View Summary

    This study investigated the relationships between the degree of muscle fatigue and changes in the delayed onset muscle soreness(DOMS), biochemical markers of muscle damage and joint performance, induced by calf-raise exercises at two different frequencies. The results suggest that 1) muscle fatigue is less by the faster exercise, 2) the degree of DOMS and the amount of muscle damage markers are related with the degree of muscle fatigue and muscle-specific, but joint performance rapidly recovers after fatigue regardless of soreness or retained biochemical changes, and that 3) fascicle and tendon behavior during exercise is altered in relation to the observed changes.

  • 身体形状および身体組成の定量と生活習慣病との関連性に関する研究

    Project Year :

    2009
    -
     
     

  • Effect of eccentric exercise on muscle damage

    Project Year :

    2007
    -
     
     

  • 西東京市しゃきしゃき体操効果測定研究

    Project Year :

    2007
    -
     
     

  • シューズおよびウエアに関する基礎的研究ならびに商品開発に関する調査研究

    Project Year :

    2007
    -
     
     

  • 弾性ストッキングのスポーツパフォーマンス向上効果に関する研究

    Project Year :

    2007
    -
     
     

  • Developing long-term care prevention program and establishing its operating system on the view of sports science

    Project Year :

    2004
    -
    2007
     

     View Summary

    In order to practice the appropriate screening, management, provided program, and evaluation for physiological, psychological, and behavioral characteristics of participants such as healthy elderly, frail elderly in long-term care prevention, the current study was conducted on 5following areas based on prepared long-term care prevention system in the first year : identifying physical, psychological, behavioral correlates of elderly needed long-term care prevention, 2) developing exercise programs for long-term care prevention, 3) developing assessment tools related to long-term care prevention, 4) developing long-term care prevention promoting programs, and 5) establishing environmental projects and operating system of long-term care prevention projects. On the 1st area, physiological characteristics(skeletal muscle mass and thickness) in wide-aged range of the elderly and behavioral correlates of engaging in resistance training and health-related physical activity were investigated. Additionally, the studies were conducted for not only the frail elderly but also healthy elderly and those with chronic disease such as cardiovascular diseases and knee osteoarthritis. On the 2nd area, exercise programs and equipments were developed based on the result of the first area and examined its effectiveness. On the 3rd area, physical functional measures and psychological scale to evaluate effectiveness of the long-term care prevention programs in the frail elderly, which has not been previously studied, were developed and demonstrated its validity and reliability. Also, scales to assess communication skill and self-efficacy in the care-giver were newly developed and evaluated. On the 4th area, developing the dissemination activity to participate in promotional program of long-term care prevention and cultivating program of community-based volunteer supporters were conducted. Finally, operating systems on various provided situations of long-term care prevention services such as comprehensive community support center and private consignment organizations(fitness companies and organizations conducted the long-term care prevention programs with public facility) were established on the5th area.

  • 筋線維内のサルコメア配列に関する研究

    Project Year :

    2006
    -
     
     

  • 平成18年度西東京しゃきしゃき体操効果測定研究事業

    Project Year :

    2006
     
     
     

  • Contraction history dependence on muscle force

    Project Year :

    2001
    -
     
     

  • three-dimensional analysis of skeletal muscle architecture

    Project Year :

    2000
    -
     
     

  • Force transmission in skeletal muscles

    Project Year :

    1997
    -
     
     

  • Study on human active life-from view point of muscle, fat and bone composition

    Project Year :

    1995
    -
    1997
     

     View Summary

    From the results of resent projects it was observed that the subcutaneous fat thickness pattern who live in country region indicated lower than that in central Tokyo city, while the muscle thickness of lower extremity were lower in country peapole than in city. This is suggesting human body composition is affected significantly by environmental condition including daily physical activity.
    To keep healthy condition in daily activity it is important that muscle groups in lower extremities such as knee extensors and plantar flexors are activated by some movements as walking and running. In the present study the old aged peaple were requested to perform 3 exercises such as squat, sit up and push up movements. This exercise program was carried on 10-20 repetition, 3 days per week, 12 months. Bone density (DXA method), subcutaneous fat and muscle thickness distiribution pattern (Ultrasound method), muscle power (Cybex machine) and body composition (Bod Pot) were measured before, 6 moths and after 1 year. Due to the excercise program knee extension power increased by about 20-60%. As the significant correlation corefficient between muscle thickness and power was observed the increment of muscle power was considered to be caused by muscle hypertrophy. The bone density increased by 2% without statistical significant. These data are indicating that even old peaple (60-70yrs) can improve muscle function by apropriate dayly excercise.

  • 筋の収縮中の形状の変化と筋機能との関連-人間における実測の試み-

    科学研究費助成事業(東京大学)  科学研究費助成事業(奨励研究(A))

    Project Year :

    1996
     
     
     

     View Summary

    本研究では、超音波法およびMRI法によって得られる2次元的な組織断面像から筋および筋束の3次元的配置に関する情報を得るための方法について検討した。また、収縮中の筋形状に変化を人間生体において実測した。はじめに、Bモード超音波装置(SSD-2000,Aloka,Japan)の探触子に空間位置計測置(Isotrak,Polhems,USA)を装着して探触子の3次元位置を計測するシステムを構築した.その後、システムの精度や測定の再現性が良好に保たれる空間範囲を同定した。次に、このシステムを用いて、下腿三頭筋のうち腓腹筋内側頭について超音波組織断層像を得た.測定点は筋全体にわたるように複数点設けた.画像をコンピュータに取り込み、各点における筋束の3次元的な配置を計測した.一方、超音波測定時と同一の条件で下腿の連続組織横断画像をMRI装置を用いて求め、腓腹筋内側頭の外形および筋、腱、腱膜の3次元位置をコンピュータ上で求めた.これらのデータより、筋の立体的な形状(筋束配置)を求め、筋内各部の筋束の長さと深部腱膜に対する角度(羽状角)および筋体積などを求めた.その結果、筋内における筋束の配置が明らかになった。筋束は遠位・深部から近位・表層部に向かって斜めに配列しており、羽状角は筋腹中央ほど高く、周辺部は低くなる傾向であった。筋束長はぞの部分でも一定であり、有意差は認められなかった。得られたデータより、筋内のストレス分布は筋腹中央部を頂点として周辺部にいくほど減少することが明らかになった。この配置は筋の安静時と活動時で大きく異なり、特に膝関節角度の影響が大きいことがわかった。膝関節角度が45°以上に屈曲した場合、筋束はほとんどslackな状態になり、足関節角度を変えても筋束長はほとんど変化しなかった。また、筋活動時の羽状角は筋腹中央部で70°近くにまで達した。

  • A study between muscle strength and walking motion in in elderly men and women

    Project Year :

    1995
    -
    1996
     

     View Summary

    Decrease in strength and atrophy of skeletal muscles with age hs been usually observed in elderly men and women. This may be due to the decreased walking ability of elderly people. It has not been clear, however, whether a cause-and-effect relationship exists between leg strength and walking ability. The purpose of the present study is to examine changes in walking style through the resistance training in elderly men and women. The nine subjects (4-male & 5-female, average 47 ye. old) who participated in this study were asked to do the resistance training for leg muscles for a period of 12 weeks. The measurements described below were carried out before and immediately after the training, to study the effects of the training. Isometric knee extension/flexion strength was measured by a Cybex machine. The style of normal walking in the sagittal plane was filmed using a video system (60 f/s). Hip, knee and ankle angles of the supporting leg were calculated in the following three phases in normal walking ; at the contact point of the heel (HC), at medium of the supporting phase (MID), and at the take-off point of the toe (TTO). Although the knee extension strength increased significantly (17%) by the training, the walking speed, the stride frequency and the stride length did not change. However, there are significant correlations between the increment of knee angles at TTO/HC phases in walking and the increment of knee extension strength. Thus, it was suggested from this result that the walking pattern involving an extended knee joint in supporting leg could be obtained by leg resistance training even in elderly men and women.
    Furthermore, we have examined the basic experiment on the resistance training, and suggested the possibility of the resistance training in elderly men and women.

  • Application of health and physical fitness test for middle and old aged people

    Project Year :

    1995
    -
    1996
     

     View Summary

    To evaluate the distribution pattern of subcutaneous fat and muscle 679 male and 950 female Japanese volunteers were investigated by means of ultrasonic tomography. In comparing a resisdent in a city (Tokyo) to the country (farmer in Yamagata) the arm muscle of a farmer thicker than that of a cityman, while the thigh muscle was lower in farmer. Muscle thickness is related to its cross-sectional area and the muscle area is affected by the activation level in daily physical exercise, the present data indicates that the farmer may have a little chance for contracting the muscle of lower extremity compared to the resident in the city.
    Generally speaking, the thigh muscle act as the main muscle for locomotion such as walking, up/down the stars and running. It was interesting to note that contrary to our expectations, the farmer developed a small muscle in lower extremity, which may be caused by a small quantity of physical activities performed by leg muscles in farm work due to mechanization of agriculture.

  • 健康増進のための巧みな動作の究明-腱の特性を生かす筋活動とは-

    科学研究費助成事業(東京大学)  科学研究費助成事業(一般研究(C))

    Project Year :

    1995
     
     
     

     View Summary

    これまで、安全で健康増進のためによいという観点からの巧みな動作の研究は、身体全体を動作解析することによって行われてきた。しかしながら、身体全体の運動を筋自体の出力特性から考察しようとする場合、どうしても説明しきれない部分があった。それは腱自体の動的特性を無視していたことによるといえる。そこで本研究では、様々な動作において、腱の果たす役割を定量分析し、化学的エネルギーを消費する筋がそれほど働かなくても身体運動を具現できる「巧みな動作」を究明することを目的とした。
    1:人間の生体における腱の「張力-長さ関係」を超音波法により定量できる方法を本研究によって提示した。結果は2次関数で回帰できた。
    2:肘の屈曲運動を対象に、弾性要素(主に腱による)の貢献を定量した。結果は、様々な負荷において、肘屈曲の全仕事量の約30%であった。
    3:両脚の連続下肢屈伸や連続跳躍の下肢3関節のトルクを調べ、そのトルク曲線のピーク値が一瞬に大きくなることから、こういった運動では腱を中心にした弾性要素の働きが大きいことが推定できた。
    身体運動において、運動を引き起こす力発揮源は筋自体であるが、ダイナミックな運動では筋と骨格をつなぐ腱が大きな役割を果たす。腱組織には、引き伸ばされると縮もうとする「バネの働き」があるからである。この腱をうまく使う動作は、反動を用いた動作である。本研究では、様々な身体運動において、腱の果たす役割の一端を直視することができた。これは、化学的エネルギーを消費する筋がそれほど働かなくても身体運動を具現できる「巧みな動作」を究明する手がかりとなると考えられた。

  • 加齢による筋の形態的・機能的特性の変化と身体運動の効果

    科学研究費助成事業(東京大学)  科学研究費助成事業(奨励研究(A))

    Project Year :

    1994
     
     
     

     View Summary

    本研究では、1)加齢に伴う体肢筋群の形態的・機能的特性の変化を定量化すること、2)身体運動がこれらの変化の程度に及ぼす効果について検討することを目的とした。形態的特性を把握するために、本研究では超音波法を用いて、筋の形状を測定した。成人男女について、青年層から高齢者まで幅広く測定を行ない,横断的なデータを収集した。加齢が筋に及ぼす変化と身体運動の効果を把握し、望ましい身体運動の種類及び強度について検討を加えた。
    実験1 青年期〜高齢者における筋の形態的特性
    637名の男女を対象に,上肢および下肢の筋の羽状角、筋線維長、筋厚を超音波法を用いた組織断層画像から求めた。その結果,筋の形状には大きな変動が認められ,加齢によって筋量や羽状角は減少する傾向が認められたが,日常定期的に身体運動を行っている高齢者では筋量の減少がみられない筋も存在することが明らかになった。また,特に下肢の筋において,日常の動作の遂行の可否を決定する最低限の筋量の存在が示された。
    実験2 身体運動が加齢による筋の形態的・機能的特性の変化に及ぼす効果
    中高年男女を被験者とし,定期的な身体運動を行なった時の筋の形態と機能の変化について検討する実験計画を現在進めている。身体運動は日常生活に深く関わるものとし,実験1の手法によって筋の形態的特性に関する測定および身体組成の推定を行なう。さらに,動作のパフォーマンスの定量化を行ない,定期的な身体運動が筋の形態および機能に及ぼす効果について検討する。実験1、2の結果をふまえて、中高年における望ましい運動処方のための具体的な指針の作成を試みる計画である。

  • Abdominal Visceral Fat of Japanese Adult

    Project Year :

    1993
    -
    1994
     

     View Summary

    This year, we have conducted some comparative studies of male and female in the same age group, living in the Tokyo metropolitan area with equivalent groups living in Okinawa and Hokkaido to investigate whether environmental factors have affects on the amount of visceral fat and distribution of subcutaneous fat.
    The percentage of body fat was measured by the Hydrodensitometry method and the amount of subcutaneous fat and its distribution was computed by B-mode Ultrasound method, measuring the thickness of subcutaneous fat and taking each segment from body surface area.
    The amount of visceral fat was then estimated by the measured difference in the amount of total body fat and subcutaneous fat. The results of this investigation showed that there were no noticeable differences in the percentage of visceral fat and distribution of subcutaneous fat contain in the body between mature male and female adults in Okinawa and Hokkaido. This results proved that the weather(hot opposed to cold environment)have little or no affect on the amount of visceral fat accumulated in the body.
    On the other hand, the percentage of visceral fat versus the amount of total body fat in mature male and female adults living in the Tokyo metropolitan area was much higher than their counterparts in Okinawa and Hokkaido. It was apparent that the city environment was an influential factor in the accumulation of visceral fat.
    Also conducted this year, was another study on the effect aerobic exercise training has in reducing the amount of visceral fat. Several obese subject were selected to conduct a 13-week aerobic exercise training program to see what effect it would have in reducing the amount of body fat, visceral fat, and subcutaneous fat.
    The results showed that there was no apparent effect of aerobic exercise reducing the amount of visceral fat, however there was a noticeable reduction of subcutaneous fat. Subcutaneous fat was reduced through physical exercise, but visceral fat was no directly affected by aerobic exercise training.13EA07 : Furthermore, as a results of investigation done on the relationship of body fat distribution and amount of visceral fat to individual eating habits and life-styles, it was apparent that the amount of alcohol and sugar intake was the primary factor contributing to the increase in the amount of visceral fat.

  • Study on physical fitness and bone density with aging

    Project Year :

    1993
    -
    1994
     

     View Summary

    To invcsitigate a effect of aging on body composition the thickness of a subcutaneous adipose tissue and muscle at 12 positions of human body were mesured by means of ultrasonic method. The thickness of muscle at evely positions of body indicated to decrease by aging from 30 to 70th years olds. Especially the muscles of lower extremities such as thigh and leg decreased by 50% at 70 years. Bone mineral density measured by DEXA method indicated to decrease with the age, and there were significant linear relationship between bone density and muscle thickness or muscle power output. By 13 weeks of aerobic training the subcutaneous fat and visceral fat decreased significantly, and the decrease of subcutaneous fat thickness correlated to the training freaquency, i.e.the higher frequency of training the decrease of fat was larger.
    From these results
    1) with the age muscle thickness at various body positions decreased significnatly
    2) the bone mineral density related to the muscle power or muscle thickness
    3) by aerobic exercise subcutaneous fat thickness and visceral fat mass decreased significantly.

  • 発育にともなう筋の形態的・機能的特性の変化

    科学研究費助成事業(東京大学)  科学研究費助成事業(奨励研究(A))

    Project Year :

    1993
    -
    1994
     

     View Summary

    実験1 発育期の形態的特性の定量化
    超音波法を用いて、発育に伴う筋の形態的特性について検討した。被験者は3歳から19歳までの男女158名であった。Bモード超音波装置を用い、外側広筋について、筋厚と羽状角を測定し、筋厚と羽状角から筋束長を推定した。その結果、以下の点が明らかになった。1)発育に伴って筋束長が増加する。2)発育に伴い、筋量の増加(筋線維の横断面積の増加)が生じる。3)筋肥大が羽状角の増加を伴う。4)12歳までは筋線維長の増加に比して筋長の増加が大きい。これらのことは、発育期には筋の量的な増加のみならず、architecturalな因子も変化していることを示唆していた。
    実験2 発育期の筋の機能的特性の評価
    13歳の少年について、筋力発揮特性および筋疲労特性について検討した。その結果、子どもの筋力発揮特性は筋力レベルの低い成人と類似していること、また、伸張性筋力発揮において特異的に疲労の影響がみられることがわかった。
    実験3 発育期の身体トレーニングが筋の形態的特性に及ぼす影響
    9歳から16歳までの男女ジュニア競技選手および一般児童69名(男性37名、除勢32名)を被検者とし、筋の形態的特性を評価した。対象とした筋は上腕三頭筋(TB)、外側広筋(VL)、内側腓腹筋(MG)であった。測定はほぼ1年間の間隔をおいて2回行った。男子において、一般児童は1年を経てもTBの筋厚、羽状角は変化がない一方で、テニスおよびスケート選手は有意な増加がみられた。また、女子体操選手の場合、TBの筋厚が群を抜いて大きく、上肢のトレーニング量を反映しているものと考えられた。一方、スケート選手はVLの筋厚の大きさが目立ち、平均で見ると男子を上回っていた。また、1年を経てさらに増加した。これらの結果より、それぞれの種目におけるトレーニングの特徴と望ましいトレーニングの方向性について検討を加えた。

  • Development of evaluation system for human muscle characteristics by means of ultrasonography

     View Summary

    The purpose of the present study is to develop the evaluation system for functional and architectural characteristics of human muscle by means of real-tune ultrasonography. The new system using ultrasonography developed in the present study made it possible to measure directly in vivo dynamic behavior of muscle fiber and tendinous tissues during human movements. Results indicated that tendinous tissues were so compliant that muscle fiber shortened even "isometric" joint actions. These elasticity of tendinous tissues induces more efficient contraction of muscle fiber during such human movements as jumping and walking. Thus the mechanical power performed by joint action were caused by mainly elastic recoil of tendinous tissues, while muscle fiber produce mainly mechanical force more efficiently with static contraction

  • 人間の筋特性(大きさ・力強さ・しなやかさ)の加齢に伴う変化と身体活動能力との関係

     View Summary

    ・平成11年度 筋形状の加齢変化に関する横断的研究超音波法を用いて上肢(上腕部)および下肢筋(大腿部・下腿部)の筋形状(筋厚、羽状角)を計測した。被験者は健常青年、中高年を含む集団であった。その結果、筋形状の加齢変化は筋によって異なり、萎縮の少ない筋(特に上肢)と多い筋(特に下肢)が存在することが明らかになった。また、全ての筋において、筋厚と羽状角の間に正の相関関係が認められ、筋肥大は羽状角の増加、筋萎縮は羽状角の減少を伴うことが明らかになった。しかし、筋厚と羽状角の変動範囲は筋によって異なり、筋形状の可塑性に筋による違いがあることが示唆された。・平成12年度 筋特性の加齢変化に関する研究健常な高齢者男女6名および健常な大学生男女11名について、最大努力で等尺性足関節底屈動作を行ったときの底屈トルクを測定し、電気刺激を用いて最大随意筋活動時の神経系の興奮水準を定量化した。また,下腿三頭筋よりH反射を誘発した。さらに、Bモード超音波法を用いて、腓腹筋内側頭の筋厚と羽状角を、安静時および最大等尺性底屈運動中に測定した。運動中に筋束の短縮が認められたが、これより筋収縮時の腱組織の伸張量を推定した。随意最大トルクと神経系の興奮水準はともに高齢者群が青年群よりも低い値であった。また、H反射はヒラメ筋、腓腹筋ともに高齢者群が青年群を下回った。腓腹筋の筋厚は高齢者群が青年群を下回る傾向であったが有意差はみられなかった。また、筋束長や羽状角にも有意な違いは認められなかった。高齢者群青年群よりも最大随意筋力が低く、これは主として神経系の興奮水準の低下(大脳レベル・脊髄レベル双方で)に起因していることが示唆された。高齢者群の特徴としてどの測定項目にも大きな個人差がみられた。腱組織伸張量に有意差が認められず、腱組織の弾性は加齢によって必ずしも低下するわけではないこと示唆された

  • 人間の骨格筋ダイナミクスのリアルタイム計測の試み

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    本研究の目的は,超音波法を用いて筋収縮時の筋束の移動の様子を明らかにすることから,関節運動中の筋線維長変化を見る事である.これまでの研究結果により,膝関節角度変化に伴う筋束長の変化の様子を定量することが出来た.その結果,等速性脚伸展動作(一定速度で膝関節を伸展させる)中に筋線維の短縮速度は著しく変化することが観察された.本年度は足関節底屈背屈中の腓腹筋(内側頭)の筋線維の力-速度関係を明らかにした.その結果,関節の角速度-関節トルク関係から推定される筋線維の短縮速度よりも実際の短縮速度は高い傾向が示された.この事は,関節の角速度変化が必ずしも筋線維の短縮速度を示すものではないことを示している.さらに,関節角速度と筋線維短縮速度との間には発揮筋力の影響が強いことが示された.つまり,高い筋力発揮時には腱組織が伸長されその結果,筋線維の短縮量が多く,短縮速度が高くなる事が考えられた.この結果は,これまで一般に考えられていた関節の動きから筋線維の動態を推定する手法に問題点が多い事を示すものである

  • Study on the life fitness in Japanese

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    This study aimed 1) to develop a measurement system for assessing muscle mass and function in a large sample, 2) to document the physical working capacity in daily life (life fitness) in Japanese by the use of the system, and 3) to investigate the content of exercise programs required to maintain and/or improve life fitness. The main findings were as the following. 1) Ultrasonograpphic muscle thickness measurement and bioelectrical impedance analysis are useful for estimating accurately the volume of limb muscles. 2) Age-related loss of muscle mass is greater in the lower limb muscles than in the upper limb muscles. Especially, for the knee extensor muscles the age-related loss occurs in the earlier generations as compared to other muscles located in limb. In addition, the abdominal muscle also shows a greater loss with aging with a similar magnitude as observed in the knee extensors. 3) For the lower limb muscles, the influence of aging on the power generation capabilities is greater than that on muscle strength. 4) For elderly women, exercise program with their own body masses as a resistance is effectiveness to improve body composition and power generation capability of lower limb muscles. Moreover, there is a significant correlation between walking step per day and either knee extension torque relative to muscle volume or the bone intensity of calcaneus in elderly women

  • 身体の柔軟性に関する研究―筋・腱特性の実測からのアプローチ

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    関節可動域の規定因子について筋腱複合体の特性の点から検討を行うこと、ストレッチングが筋腱複合体に及ぼす影響を調べること、の2点を目的として以下の研究を行った。研究1 被検者は185名の健常な中・高年齢者(女性116名、男性69名;48歳〜86歳)であった。被検者は座位をとり、足部を筋力計のフットプレートに固定した。フットプレートは底屈位置を始点として足背屈方向に回転し、あらかじめ設定した受動トルクが生じたときに停止し、その時の足関節角度を計測した。超音波法により腓腹筋内側頭の遠位筋腱移行部の移動から筋線維伸長を計測し、関節角度変化から推定した全筋長変化からアキレス腱伸長を推定した。最大随意等尺性足底屈・背屈トルク、被検者が最大努力で背屈動作を行ったときの足関節角度(能動背屈角度)、下腿前部・後部の筋厚を計測した。得られた結果から、以下の結論が導かれた。1)受動背屈角度には筋群の伸長抵抗性が影響を及ぼし、これには筋量や筋腱複合体(特に腱組織)の力学的性質が影響する。女性は男性よりも受動背屈角度が大きく、男女とも加齢によって低下する。2)能動背屈角度は伸長される筋群の伸長抵抗性に加えて、それを伸長する筋群の筋力が影響を及ぼす。研究2 被験者は健常な男女大学生22名(男性8名,女性14名)であった。実験1と同様の方法で足関節を背屈方向に回転したときの受動背屈角度および筋腱複合体長変化を計測した。同一の試技を10回繰り返した。10回の連続足背屈試行中に徐々に足背屈角度が増加した。筋線維伸長は4回目までは有意に増加したが、それ以降は増加が頭打ちとなった。一方、アキレス腱伸長は後半有意に増加した。連続した受動足背屈中に生じる背屈角度の増加は、はじめは筋線維の、後半は腱組織の伸長によることが示された。ストレッチングはその回数や負荷を工夫することによって筋線維と腱組織双方の伸長性を高める効果を及ぼし得ることが示唆された

  • EFFECTS OF ROWING ON HEALTH PROMOTION IN OLDER PEOPLE

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    We evaluated effects of age and rowing on cardiovascular function, blood lipid-lipoprotein profile and muscle mass. Although older oarsmen possessed a lower Vo2max than the young oarsmen, they showed a Vo2max similar to that of the young sedentary men but a higher value than obtained from the older sedentary men. The index of risk factors for CHD in the older oarsmen (LDL-C/HDL-C) was lower than that in the sedentary older men. The results suggest that rowing is an appropriate type of exercise for the promotion of health.We also evaluated the effects of rowing on the morphology and function of the leg muscle in older people. The leg extensor muscle area (CSA) of the oarsmen was larger that that of the sedentary men. Also the bilateral leg extension power of the oarsmen was larger than that of the sedentary men. Thus, the leg extensor power per CSA was not different between the two groups. The results suggest that rowing prevents age-related muscle wasting and weakness.This study evaluated oxygen uptake (Vo2) and heart rate (HR) during ergometry rowing (combined arm and leg ; sitting exercise) and treadmill running (leg ; upright exercise) for older people. The HR was lower during ergometry rowing than during treadmill running at a blood lactate concentration of 4mM (151±4 bpm vs. 160±5 bpm) and at a maximal effort (171±7 bpm vs. 177±7 bpm). This was the case although the Vo2 was higher during ergometry rowing than during treadmill running both at a blood lactate concentration of 4mM (3.0±0.4 /min vs. 2.7±0.4 L/min) and at a maximal effort (3.4±0.4 L/min vs. 3.1±0.3 L/min). The results suggest that, in prescription of rowing for older people, the relation between HR and Vo2 for rowing and the attenuated HR response to rowing should be taken into consideration

  • Quantitative approach for activation level of skeletal muscle during human daily life of aged peoples

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    In our previous studies, it has been observed that the aging induces the atrophy of muscle tissue and deterioration of muscle function. The muscle atrophy and deterioration of muscle strength was depend on the muscle groups, i.e.quardriceps femoris muscle indicated dominant atrophy and lowering the knee extension strength compared to other muscle groups. On the other hand, armmuscles such as elbow flexors and extensors indicated no changes independent of age. The differences for responsibility to the aging among muscle groups is considered for the muscle to activate with different levels in daily life. However, so far, there were no studies for the estimation of muscle activation level during daily life. The purpose of the present study is, therefore, to quantify the muscle activation levels during workaday life by means of electromyogram(EMG). EMG recordings during 10 hours a day were obtained from such 8 muscle groups as rectus abdominis, erector supinae, vustus femoris medialis, rectus femoris, vustus lateraris, biceps femoris, tibialis anterior, gastrocnemius medialis. To estimate the level of activation of muscle, we adopted the expression of %MVC (maximal voluntary contraction strength). In the case of normal workaday life, the measured EMG indicated relatively lower muscle activation during workaday life, i.e. every muscle groups activated lower than 30%MVC. It is considered that as to prevent muscle atrophy above 40%MVC is demanded as the effective training intensity, specially designed muscle activity should be added in daily life to keep muscle volume and function

  • A study on changes in flexibility by growth and aging and development of the methodology to improve flexibility

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    In the present research project, I defined flexibility as the range of motion (ROM) of the joint, and carried out a series of studies with the following three aims, i.e., 1) to elucidate determinants of ROM, with respect to musculotendinous properties, 2) to clarify gender differences and effects of growth and aging on ROM and their determinants, and 3) to investigate the plasticity of ROM. For these aims, I developed a system with which passive ROM was measured in a well-controlled loading condition and extensibility of the muscle-tendon unit was measured in vivo. Throughout the series of studies, I focused on ankle plantar-and dorsi-flexion ROM by studying behavior of the triceps surae and tibialis anterior muscles. The following findings were obtained. 1) It was shown that ROM should be evaluated both in passive and active conditions, and that muscle size, strength, and elastic properties of the muscle-tendon unit were selected as determinants of passive and active ROM. 2) There was a gender difference in ROM (women larger than men) that was related particularly with extensibility of the tendon, but the relationship was a function of age. 3) Static stretching of the muscles resulted in an increase in ROM that was accompanied by further elongation of tendon but not of muscle fibers. Bed rest induced similar changes in ROM and tendon properties. Furthermore, the interdependence among muscle size, strength, architecture, and musculotendinous mechanical properties was studied in detail. Studies on the relationship between deformation of the muscle-tendon unit induced by passive lengthening, active contractions and joint torque indicated the possibility of plasticity of musculotendinous mechanical properties, suggesting potentials of these procedures as the way to improve ROM

  • Studies on the mechanisms of exercise-induced muscle soreness and strain : with a perspective to training for muscle functions

  • Home-based exercise training program for improving activity of daily living in the elderly individuals

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    The purpose of this study were to examine the effect of resistance training employing daily physical actions and to design the exercise training program for the elderly individuals. The subjects performed the training exercise, such as sitting onto and standing from a chair, calf raise and sit-up actions, for 3 months (every day, 2-3 sets/day, 16 times/set). The 3-month exercise training increased the muscle thickness, muscle strength and the ability to perform activities of daily living, and improved scores of index of QOL. The effect of the present resistance training affected the level of muscle strength per body weight before intervention. These findings indicate that the present resistance training program is useful for the elderly individuals with lower force-generating capacity to improve QOL

  • Effects of neuromuscular electrical stimulation on dynamic muscular performance

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    The purpose of this study was to examine the effects of high-intensity, short-duration neuromuscular electrical stimulation as a warm-up procedure on the subsequent dynamic muscular performance(i. e., maximal voluntary concentric torque). A series of experiments demonstrated that muscle contraction of approximately 5 seconds, performed through maximal voluntary isometric contraction or neuromuscular electrical stimulation with proper stimulation protocol can be a modality to enhance dynamic muscular performance, with the latter having more immediate effect

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Presentations

  • 音で身体運動パフォーマンスを評価する

    川上泰雄, 相澤岳  [Invited]

    日本音響学会2022年春季研究発表会 

    Presentation date: 2022.03

    Event date:
    2022.03
     
     
  • Biceps femoris fascicle architecture changes upon knee flexion-extension

    Mantecon, C J T, Kawakami, Y, Maas, H, Weide, G  [Invited]

    2022 Interanational Symposium Multi-level structural and functional adaptability of skeletal muscles and the whole-body 

    Presentation date: 2022.03

    Event date:
    2022.03
     
     
  • Fascio-tendinous linkage in the human lower extremity

    Shiotani, H, Takahashi, K, Tomari, K, Honma, Y, Hayashi, H, Sado, N, Kawakami, Y  [Invited]

    2022 Interanational Symposium Multi-level structural and functional adaptability of skeletal muscles and the whole-body 

    Presentation date: 2022.03

    Event date:
    2022.03
     
     
  • Application of ultrasound image for muscle and tendon activity and injury evaluation

    Kawakami, Y

    The 18th Kasetsart University Kamphaengsaen Campus National Conference  (online) 

    Presentation date: 2021.12

  • 子どもから高齢者に及ぶ一般人の体力・生活能力の評価技術の確立と応用

    川上泰雄  [Invited]

    早稲田大学オープンイノベーション戦略研究機構Wellbeingフォーラム研究シーズ紹介 

    Presentation date: 2021.11

    Event date:
    2021.11
    -
     
  • 骨格筋メカニクスから考えるストレングストレーニングと外傷・障害予防

    川上泰雄  [Invited]

    第32回日本臨床スポーツ医学会 

    Presentation date: 2021.11

    Event date:
    2021.11
     
     
  • Effects of amino acid mixture on functional and morphological properties of achilles tendon

    Kawakami, Y, Shiotani, H, Otuska, S, Hui, L, Ichinose, H, Chi, Y, Kurumisawa, K, Yamada, Y, Shan, X, Saeki, J, Sado, N, Tanaka, F, Kumai, T, Nishitani, S, Takada, M, Toyoda, S, Uchida, H, Adachi, Y

    American College of Sports Medicine 68th Annual Meeting 

    Presentation date: 2021.06

    Event date:
    2021.06
     
     
  • Interrelationship between muscle size, and locomotor ability of the elderly

    Kawakami. Y

    1st International Online Conference on TU Health Science 

    Presentation date: 2021.03

  • 腱と筋膜を深堀りする夜!〜バイオメカニクスと解剖の見地から〜

    川上泰雄

    第2回 さいとう整形セミナー 

    Presentation date: 2021.03

  • ボディビルダーの減量における⼤腿部筋横断⾯積および⾮収縮要素横断⾯積の変化

    一瀬星空, 長瀬嘉剛, 佐渡夏紀, 呂匯, 山田雄基, 川上泰雄

    第33回日本トレーニング科学会大会 

    Presentation date: 2020.12

  • Influence of sprint duration on muscle activation and peripheral tissue oxygenation

    Yamagishi, T, Iwata, S, Otsuka, S, Ichinose, H, Kurumisawa, K, Kawakami, Y

    25th European College of Sport Science Anniversary Congress 

    Presentation date: 2020.10

  • Acute effects of static stretching of ankle and metatarsophalangeal joint on plantar fascial and muscular stiffness, passive joint range of motion, and foot arch deformation during drop jump

    Shiotani, H, Sado, N, Kurumisawa, K, Saeki, J, Kawakami, Y

    第26回日本バイオメカニクス学会大会 

    Presentation date: 2020.09

  • 「人生におけるスポーツの価値と科学的エビデンス 新型コロナ感染収束後の社会のために」

    川上泰雄  [Invited]

    日本学術会議主催学術フォーラム 

    Presentation date: 2020.06

  • 健康づくりの重要性について、研究結果からわかりやすく解説

    川上泰雄  [Invited]

    西東京市しゃきしゃき体操集中講座 

    Presentation date: 2019.12

  • ダイナミックな動作を取り入れた体操教室の実施が高齢者の体幹筋量に及ぼす影響

    大崎諒, 田中史子, 山岸卓樹, 柴田重信, 川上泰雄

    第24回日本基礎理学療法学会学術大会 

    Presentation date: 2019.11

  • Efficacy of novel material for surface electromyography

    Otsuka, S, Mihara, S

    Electrophysiological and Imaging Approaches to Study the Neuro-Musculo-Mechanics of Human Movement 

    Presentation date: 2019.11

  • Current knowledge and demonstration of ultrasound measurements to study the characteristics of the muscle-tendon structures

    Kawakami, Y  [Invited]

    Electrophysiological and Imaging Approaches to Study the Neuro-Musculo-Mechanics of Human Movement 

    Presentation date: 2019.11

  • ランニングが足底腱膜の形態的・力学的特性および足部形態に及ぼす影響:長距離ランナーは急性の変化を小さくランニングを遂行する

    塩谷彦人, 溝口朋裕, 山下亮, 川上泰雄

    第32回日本トレーニング科学会大会 

    Presentation date: 2019.10

  • 足底腱膜の形態的・力学的特性の定量評価を通じた足部コンディション評価法の確立:静的ストレッチングが足底腱膜の形態的・力学的特性および足部形態に及ぼす影響

    川上泰雄, 塩谷彦人, 佐渡夏紀, 佐伯純弥, 戚维璜, 池田尚樹, 上杉繁  [Invited]

    ヒューマンパフォーマンス研究所第2回研究会 

    Presentation date: 2019.09

  • シューズのミッドソール素材の物性値が着地動作中の地面反力特性に及ぼす影響

    胡桃沢啓介, 塩谷彦人, 佐渡夏紀, 川上泰雄

    第74回日本体力医学会大会 

    Presentation date: 2019.09

  • 男子長距離ランナーの足底腱膜の形態的・力学的特性の定量評価と左右差の検討

    塩谷彦人, 山下亮, 溝口朋裕, 川上泰雄

    第74回日本体力医学会大会 

    Presentation date: 2019.09

  • シューズ着用の有無がランニングによる下肢筋群の力学的特性の変化に与える影響

    佐伯純弥, 塩谷彦人, 大塚俊, 単西瑶, 山岸卓樹, 川上泰雄

    第74回日本体力医学会大会 

    Presentation date: 2019.09

  • 下肢深筋膜の厚さと筋厚および筋力との関係性

    大塚俊, 単西瑶, 胡桃沢啓介, 大村志穂, 川上泰雄

    第74回日本体力医学会大会 

    Presentation date: 2019.09

  • Musculo-tendinous-fascial interaction during joint actions: in vivo evidence

    Kawakami, Y  [Invited]

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.08

  • Site- and joint angle- dependent elastic properties of human iliotibial band: A shear wave elastography study

    Otsuka, S, Yoshida, K, Kawakami, Y

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.08

  • Inhomogeneous and anisotropic mechanical properties of the triceps surae aponeuroses in vivo during submaximal muscle contraction

    Shan, X, Otsuka, S, Kawakami, Y

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.08

  • Musculotendinous mechanics for exercise performance enhancement: importance of motor control.

    Kawakami, Y  [Invited]

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.08

  • Musculotendinous mechanics for exercise performance enhancement: importance of motor control.

    Kawakami, Y  [Invited]

    the 43rd Annual Meeting of the American Society of Biomechanics 

    Presentation date: 2019.07

  • Muscle shear modulus in hamstrings: Effect of intensity, contraction type, and relationship with muscle anatomy

    Evangelidis, P, Shan, X, Otsuka, S, Yang, C, Kawakami, Y

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.07

  • Mechanical characteristics of the foot, lower extremity muscle sizes, and walking performance of children and adults

    Apibantaweesakul, S, Nagayoshi, T, Aduayom-Ahego, A, Qi, W, Shiotani, H, Omura, S, Aizawa, G, Tanaka, F, Kawakami, Y

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.07

  • Effects of ankle and metatarsophalangeal joint angles on morphological and mechanical properties of the plantar fascia

    Shiotani, H, Maruyama, N, Kurumisawa, K, Yamagishi, T, Kawakami, Y

    27th Congress of the International Society of Biomechanics 

    Presentation date: 2019.07

  • Muscle-tendon-fascia system as a fibre-reinforced entity of actuators and springs: in-vivo and ex-situ evidence.

    Kawakami, Y  [Invited]

    4th Rocky Mountain Muscle Symposium 

    Presentation date: 2019.07

  • Fatigue-induced changes in hamstrings shear modulus and load distribution depend on contraction type.

    Evangelidis, P, Shan, X, Otsuka, S, Yang, C, Yamagishi, T, Kawakami, Y

    4th Rocky Mountain Muscle Symposium 

    Presentation date: 2019.07

  • Effect of rhythmic lower limb movments on the performance of multi-limb rhytmic movement

    Qi, W, Nakajima, T, Sakamoto, M, Kato, K, Kawakami, Y, Kanosue, K

    24rd Annual Congress of the European College of Sports Science 

    Presentation date: 2019.07

  • Musculotendinous ultrasonography: basics and clinical application.

    Kawakami, Y  [Invited]

    Seminar in Thammasat University 

    Presentation date: 2019.05

  • 人間の身体特性とその操作技術:身体能力向上に向けてのバイオメカニクス的アプローチ

    川上泰雄  [Invited]

    東京医科歯科大学セミナー 

    Presentation date: 2019.05

  • しんたい20周年記念事業「毎月20日は“しんたい”の日」企画第1弾

    川上泰雄, 田中史子, 菊池萌水  [Invited]

    今、改めて「筋肉」を学ぶ! 

    Presentation date: 2019.04

  • 元気に暮らし続けるための筋肉の作り方

    川上泰雄, 田中史子, 菊池萌水  [Invited]

    (公財)身体教育医学研究所「みんなのための筋肉の話」ケアポートみまき 

    Presentation date: 2019.04

  • 身体運動能力と骨格筋特性の加齢変化から考える高齢者の運動指導

    川上泰雄  [Invited]

    高齢者運動指導エクセレンスセミナー 

    Presentation date: 2019.03

  • 「高齢者の身体能力に及ぼす運動×機能性食品の相乗効果~時間栄養学・運動学の観点から~」

    田中史子

    第8回シンポジウム 未来志向の次世代食品機能性と自然免疫 

    Presentation date: 2019.03

  • The effect of locally braking crank rotation during pedaling on the pedaling force and activation of lower limb muscles

    Iwata, S, Horiuchi, T, Yamagishi, T, Tokuyasu, Y, Wesugi, S, Kawakami, Y

    KU Leuven-Waseda International Workshop 

    Presentation date: 2019.03

  • Acute effects of running on morphological and mechanical characteristics of the plantar fascia

    Shiotani, H, Mizokuchi, T, Yamashita, R, Kawakami, Y

    KU Leuven-Waseda International Workshop 

    Presentation date: 2019.03

  • The effect of knee and hip joint angle changes on the stiffness of iliotibial band

    Otsuka, S, Yoshida, K, Kawakami, Y

    KU Leuven-Waseda International Workshop 

    Presentation date: 2019.03

  • 身体運動能力と骨格筋特性の加齢変化から考える高齢者の運動指導

    川上泰雄  [Invited]

    高齢者運動指導エクセレンスセミナー 

    Presentation date: 2019.03

  • 身体運動能力と骨格筋特性の加齢変化から考える高齢者の運動指導

    川上泰雄  [Invited]

    高齢者運動指導エクセレンスセミナー 

    Presentation date: 2019.02

  • 軟組織のマニピュレーションが筋腱複合体の伸長性や発揮筋力に及ぼす影響

    川上泰雄, 池田尚樹  [Invited]

    日本超音波骨軟組織学会 第33回西日本支部学術集会 

    Presentation date: 2019.02

  • 身体運動能力と骨格筋特性の加齢変化から考える高齢者の運動指導

    川上泰雄  [Invited]

    高齢者運動指導エクセレンスセミナー 

    Presentation date: 2019.02

  • Effect of different knee-joint positions on passive stiffness of medial gastrocnemius muscle and aponeuroses during passive ankle motion

    Shan, X, Evangelidis, P, Kositsky A, Ikeda, N, Kawakami, Y

    21th International Conference on Sport, Health and Exercise Science 

    Presentation date: 2019.02

  • 「生涯を通した健康増進に向けて」「身体能力を測る・磨く・育むに」ついての紹介

    川上泰雄  [Invited]

    ヒューマンパフォーマンス研究所第2回シンポジウム 

    Presentation date: 2018.12

  • 筋腱複合体の形態と機能に関する新たな視座:生体計測の知見から

    川上泰雄  [Invited]

    第23回日本基礎理学療法学会学術大会 

    Presentation date: 2018.12

  • 人間の骨格筋の可塑性と適応性ーバイオメカニクスの観点からー

    田中史子

    コロイド先端技術講座2018 スポーツで活躍するソフトマター 

    Presentation date: 2018.11

  • ロードバイクにおける高速ダウンヒルコーナリング技能の修得支援―自動速 度維持装置を活用した車体姿勢操作と走行精度の向上方法の検討―

    上林周平, 榎本晋之介, 酒井大樹, 岩田宗也, 川上泰雄, 上杉繁

    日本機械学会 シンポジウム: スポーツ工学・ヒューマンダイナミクス2018 

    Presentation date: 2018.11

  • ロードバイクにおけるペダリング技能向上支援に関する研究 ―引き足を対象としたクランク位置での局所制動を付与するトレーニングツールの開発―

    雪吹俊哉, 徳安陽一, 岩田宗也, 川上泰雄, 上杉繁

    日本機械学会 シンポジウム: スポーツ工学・ヒューマンダイナミクス2018 

    Presentation date: 2018.11

  • Anisotropic elastic properties of the fascia lata during muscle contraction at different intensities-a shear wave elastography study、5th International Fascia Research Congress

    Otsuka, S, Shan, X, Kawakami, Y

    5th International Fascia Research Congress 

    Presentation date: 2018.11

  • Biomechanics of human locomotion from a viewpoint of energy save and use.

    Kawakami, Y  [Invited]

    5th Joint Symposium of Thammasat University, BK21 PLUS of CUK & National Defense Medical Center, Biomedical Sciences and Biomechanics of Health 

    Presentation date: 2018.11

  • 長距離ランナーの3か月間の走り込みトレーニングが走タイムとアキレス腱の力学的・形態的特性に及ぼす影響

    池田尚樹, 川上泰雄

    第31回日本トレーニング科学大会 

    Presentation date: 2018.10

  • Muscle-tendon-fascia unit as a functional entity in humans: in-vivo and ex-situ evidence

    Kawakami, Y  [Invited]

    5th International Autumn School of Movement Science in Berlin, 8-12/10/2018 

    Presentation date: 2018.10

  • Muscle-tendon-fascia unit as a functional entity in humans: In vivo and ex-situ evidence

    Kawakami, Y  [Invited]

    5th International Autumn School of Movement Science in Berlin, 8-12/10/2018 

    Presentation date: 2018.10

  • 西東京市しゃきしゃき体操推進リーダー養成講座

    川上泰雄  [Invited]

    西東京市しゃきしゃき体操推進リーダー養成講座 

    Presentation date: 2018.09

  • Muscle size and function, and locomotion ability of the elderly in Japan: Assessment and intervention

    Kawakami, Y, Tanaka, F  [Invited]

    Visite d’une délégation de la Faculty of Sport Science s de l'Université de Waseda Universite Liebe De Bruxelles 

    Presentation date: 2018.09

  • Research activities

    Kawakami, Y  [Invited]

    KU Leuven & Waseda Joint Seminar 

    Presentation date: 2018.09

  • ペダリング中の局所的なクランク回転制動が踏力および下肢筋群の筋活動に及.ぼす影響

    岩田宗也, 堀内智貴, 山岸卓樹, 徳安陽一, 上杉繁, 川上泰雄

    第25回日本バイオメカニクス学会大会 

    Presentation date: 2018.09

  • ランニングが足底腱膜の形態的・力学的特性に及ぼす影響とその部位差

    塩谷彦人, 溝口朋裕, 山下亮, 川上泰雄

    第25回日本バイオメカニクス学会大会 

    Presentation date: 2018.09

  • ゴルフスイング中の筋活動と身体の動き

    川上泰雄, 原有心  [Invited]

    藤倉化成(株) 技術交流会 

    Presentation date: 2018.08

  • Musculature and composition of the thigh of the elderly: A new perspective.

    Ichinose, H, Evangelidis, P, Yamagishi, T, Tanaka, F, Shibata, S, Kawakami, Y

    23rd Annual Congress of the European College of Sports Science 

    Presentation date: 2018.07

  • Site- and gender-differences in morphological and mechanical properties of the plantar fascia in asymptomatic young individuals

    Shiotani, H, Yamashita, R, Mizokuchi, T, Kawakami, Y

    23rd Annual Congress of the European College of Sports Science 

    Presentation date: 2018.07

  • Influence of leg muscle size and power on maximal aerobic cycling performance of male and female athletes

    Yamagishi, T, Saito, A, Kawakami, Y

    23nd Annual Congress of the ECSS 

    Presentation date: 2018.07

  • 動いて食べて延ばせ健康寿命

    田中史子

    日本女子大学講演会 

    Presentation date: 2018.06

  • Single-joint eccentric knee extension training induces selective hypertrophy: a potential preventive measure against strain injuries

    Maeo, S, Shan, X, Otsuka, S, Kanehisa, H, Kawakami, Y

    The American College of Sports Medicine 65th Annual Meeting 

    Presentation date: 2018.05

  • 人間の骨格筋を支持構造から考える:腹膜の意義に関して

    川上泰雄  [Invited]

    第37回 東日本支部学術集会 

    Presentation date: 2018.04

  • しゃきしゃき体操とその有効性

    川上泰雄  [Invited]

    西東京市 東伏見体育館 しゃきしゃき体操講演 

    Presentation date: 2018.04

  • トップアスリートの身体特性とその操作技術

    川上泰雄  [Invited]

    東京医科歯科大学×早稲田大学 第3回連携ワークショップ「いのちを科学する」 

    Presentation date: 2018.04

  • Neuro-musculo-tendinous mechanics and exercise performance.

    Kawakami, Y  [Invited]

    Conference on Sport Sciences 

    Presentation date: 2018.03

  • 足底腱膜の形態的・力学的特性の定量評価を通じた足部コンディション評価法の確立

    塩谷彦人, 溝口朋裕, 山下亮, 永吉俊彦, 山岸卓樹, 堀内智貴, 熊井司, 磯繁雄, 相楽豊, 上杉繁, 川上泰雄

    ヒューマンパフォーマンス研究所第1回シンポジウム 

    Presentation date: 2018.02

  • 大腿部深筋膜の力学的特性の定量評価~人間の身体能力への応用を見据えて~

    大塚俊, 大道裕介, 大道美香, 矢倉富子, 内藤宗和, 中野隆, 川上泰雄

    第3回Muscle Biomechanics Imagingセミナー 

    Presentation date: 2018.02

  • 身体運動のパフォーマンスにおける下肢の筋腱複合体のはたらき:下腿三頭筋の解剖学的特性を中心に

    川上泰雄  [Invited]

    第41回JSBM超音波ハンズオンセミナー初級編 基調講演 

    Presentation date: 2018.01

  • Synergistic effect of exercise and functional foods on the physical performance of the elderly: from the perspective of chrono-nutrition & Kinesiology.

    Kawakami, Y  [Invited]

    Food, Exercises and Technology for Health Promotion 

    Presentation date: 2018.01

  • Synergistic effect of exercise and functional foods on the physical performance of the elderly: From the perspective of chrono-nutrition & Kinesiology.

    Kawakami, Y  [Invited]

    Food, Exercises and Technology for Health Promotion 

    Presentation date: 2018.01

  • 足首に装着する単一の慣性センサに基づく足の筋肉収縮強度推定手法の提案.

    谷子曦, 兒玉拓磨, 河西利太朗, 張頔, 孔维晟, コセンティノ・サラ, セッサ・サルバトーレ, 川上泰雄, 高西淳夫

    第18回 計測自動制御学会システムインテグレーション部門講演会 

    Presentation date: 2017.12

  • Elastic mechanism in human movement.

    Kawakami, Y  [Invited]

    Italy-Japan Workshop 2017 

    Presentation date: 2017.12

  • Measurement of the plantar fascia elasticity using shear wave elastography: Site and gender differences.

    Shiotani, H, Yamashita, R, Mizokuchi, T, Kawakami, Y

    The 5th international Conference on Biomedical Ultrasound 

    Presentation date: 2017.12

  • Site dependence of the human fascia lata elasticity

    Otsuka, S, Shan, X, Evangelidis, P, Tanaka, F, Shibata, S, Kawakami, Y

    The 5th international Conference on Biomedical Ultrasound 

    Presentation date: 2017.12

  • Anisotropic elasticity of adjoining aponeuroses of gastrocnemius medialis and soleus in older adults: In vivo measurements using shear wave elastography

    Shan, X, Evangelidis, P, Tanaka, F, Shibata, S, Kawakami, Y

    The 5th international Conference on Biomedical Ultrasound 

    Presentation date: 2017.12

  • 高齢者の身体能力に及ぼす運動×機能性食品の相乗効果:時間栄養学・運動学の観点から

    川上泰雄  [Invited]

    内閣府 戦略的イノベーション創造プログラム(SIP)「次世代農林水産業創造技術」「次世代機能性農林水産物・食品の開発」公開シンポジウム―得られた成果とさらなる発展に向けて 

    Presentation date: 2017.11

  • Neural and hypertrophic adaptations to maximal eccentric versus concentric training matched for total work

    Maeo, S, Shan, X, Otsuka, S, Kanehisa, H, Kawakami, Y

    BASES-FEPSAC Conference 2017 

    Presentation date: 2017.11

  • 人体の画像解析からみるトップアスリートたち(シンポジスト)

    川上泰雄  [Invited]

    日本メディカルライター協会・東京工科大学共催シンポジウム「メディカルデザイン-その限りない可能性をさぐる」 

    Presentation date: 2017.11

  • エリートアスリートの随意最大筋力に影響する因子

    齋藤輝, 前大純朗, 池田尚樹, 大塚俊, 河越勇紀, 西田和正, 塩谷彦人, 山岸卓樹, 川上泰雄

    第30回日本トレーニング科学大会 

    Presentation date: 2017.10

  • ランニング中の下肢の関節運動計測(招待講演)

    川上泰雄  [Invited]

    MAC3Dセミナー 

    Presentation date: 2017.10

  • ベイジアンネットワークによる生活習慣データの因果推論と特定項目の改善の提案

    石川詩苑, 田中史子, 川上泰雄, 浜田道昭

    生命情報科学若手の会 第9回研究会 

    Presentation date: 2017.10

  • 器具を用いた軟組織モビライゼーションが足関節柔軟性および筋スティフネスに与える影響.

    池田尚樹, 大塚俊, 川西陽三, 川上泰雄

    第68回日本体育学会大会 

    Presentation date: 2017.09

  • Interrelationships among deformability and size of the upper- and lower-limb muscles in the elderly.

    Tanaka, F, Shan, X, Filiz, A, Higuchi, M, Shibata, S, Kawakami, Y

    The 26th Congress of the International Society of Biomechanics 

    Presentation date: 2017.07

  • Measurement of plantar fascia elasticity by using shear wave elastography: Site-dependent differences and relation to ankle joint positions.

    Shiotani, H, Shan, X, Kawakami, Y

    26th Congress of the International Society of Biomechanics 

    Presentation date: 2017.07

  • Relationships between walking speed mobility and trunk muscle size.

    Osaki, R, Saito, A, Tanaka, F, Higuchi, M, Shibata, S, Kawakami, Y

    International Society of Biomechanics 2017 

    Presentation date: 2017.07

  • Effect of changing gait parameters on joint kinematics and muscle activities of the lower limb during walking.

    Nishida, K, Tagami, K, Kawakami, Y

    26th congress of the international society of biomechanics 

    Presentation date: 2017.07

  • The effect of thigh compression garment on isokinetic knee extension and flexion torque development.

    Kawagoe, Y, Otsuka, S, Kawakami, Y

    26th Congress of the International Society of Biomechanics 

    Presentation date: 2017.07

  • Relationships between various aerobic factors during and after maximal exercise in elite athletes.

    Yamagishi, T, Saito, A, Maeo, S, Kawakami, Y

    22nd Annual Congress of the ECSS 

    Presentation date: 2017.07

  • 生体計測を通じた人間の身体能力の評価

    川上泰雄  [Invited]

    産業技術総合研究所スポーツ科学セミナー 

    Presentation date: 2017.07

  • 人間の筋腱複合体の形状と機能-運動能力との関連性-

    川上泰雄  [Invited]

    愛知医科大学特別講義 

    Presentation date: 2017.06

  • 高齢者の身体機能に及ぼす運動の効果

    川上泰雄  [Invited]

    平成29年公益社団法人東京都柔道整復師会世田谷支部(城南ブロック合同)研究会「認知症と運動」 

    Presentation date: 2017.06

  • Muscle size strength and locomotor ability of the elderly in Japan: Assessment and intervention.

    Kawakami, Y  [Invited]

    The 8th Asia-Pacific Conference on Exercise and Sports Science 2017 & The 7th International Conference on Sport and Exercise Science 

    Presentation date: 2017.06

  • Age-related differences in size and deformability of the rector femoris muscle.

    Tanaka, F, Shan, X, Filiz, A, Saito, A, Ema, R, Higuchi, M, Shibata, S, Kawakami, Y

    The 8th Asia-Pacific Conference on Exercise and Sports Science 2017 & The 7th International Conference on Sport and Exercise Science 

    Presentation date: 2017.06

  • Force transmission and epimuscular interaction through fascia: some evidence from in vivo observations.

    Kawakami, Y  [Invited]

    CONNECT 2017: Connective Tissus in Sports Medicine 

    Presentation date: 2017.03

  • Structure and function of human fascia lata: site dependence of elastic property.

    Otsuka, S, Yakura, T, Ohmichi, Y, Ohmichi, M, Naito, M, Nakano, T, Kawakami, Y

    Connective Tissues in Sports Medicine 2nd International Congress 

    Presentation date: 2017.03

  • Site- and direction-dependent morphological and mechanical properties of the human triceps surae apponeuroses.

    Shan, X, Otsuka, S, Yakura, T, Naito, M, Nakano, T, Kawakami, Y

    Connective Tissues in Sports Medicine 2nd International Congress 

    Presentation date: 2017.03

  • Force transmission and epimuscular interaction through fascia: Some evidence from in vivo observations.

    Kawakami, Y  [Invited]

    Connective Tissus in Sports Medicine 

    Presentation date: 2017.03

  • Exercise Performance Enhancement Utilizing Muscle Mechanics.

    Kawakami, Y  [Invited]

    MEXT Top Global University Project: Health Promotion: The Joy of Sports and Exercise. The 3rd International Symposium 

    Presentation date: 2017.03

  • Effect of changing gait parameters on joint kinematics and muscle activities of the lower limb during walking.

    Nishida, K, Tagami, K, Kawakami, Y

    Health promotion: The joy of sports and exercise. International symposium 

    Presentation date: 2017.03

  • The effect of thigh compression garment on isokinetic knee extension and flexion torque development.

    Kawagoe, Y, Otsuka, S, Kawakami, Y

    Health promotion: The joy of sports and exercise. International symposium 

    Presentation date: 2017.03

  • Efficacy of elastic shoe insoles in leg spring and energy efficiency modulation in running.

    Shiotani, H, Oikawa, S, Kawakami, Y

    Health promotion: The joy of sports and exercise. International symposium 

    Presentation date: 2017.03

  • The relationship between walking ability dynamic balance and trunk muscle size in middle-aged and elderly individuals.

    Osaki, R, Saito, A, Tanaka, F, Higuchi, M, Shibata, S, Kawakami, Y

    Health promotion: The joy of sports and exercise. International symposium 

    Presentation date: 2017.03

  • Local vibration stretching: A novel stretching modality improving flexibility and drop jump performance.

    Ikeda, N, Yonezu, T, Inami, T, Shan, X, Kawakami, Y

    Health promotion: The joy of sports and exercise. International symposium 

    Presentation date: 2017.03

  • Exercise performance enhancement utilizing muscle mechanics.

    Kawakami, Y  [Invited]

    MEXT Top Global University Project: Health Promotion: The Joy of Sports and Exercise. The 3rd International Symposium 

    Presentation date: 2017.03

  • しゃきしゃき筋力・脳力アップ介入が、高齢者の気分・認知機能に与える影響~性差に着目して~

    灰谷知純, 田中史子, 山岸卓樹, 井上和哉, 齋藤順一, 髙橋徹, 川上泰雄, 熊野宏昭

    早稲田大学応用脳科学研究所シンポジウム「応用脳科学の進展2017」 

    Presentation date: 2017.02

  • 「スマホアプリ『メタボウォッチ』」:時間栄養・運動学的観点から成人男女の生活習慣と体型の関連性を探る」

    田中史子

    早稲田大学重点領域研究 公開シンポジウム「食・農で日本を健康にする」研究開発シンポジウム 

    Presentation date: 2017.02

  • Task-dependent muscle damage localizations induced by quadriceps eccentric exercises.

    Maeo, S, Saito, A, Otsuka, S, Shan, X, Kanehisa, H, Kawakami, Y

    5th NSCA International Coference 

    Presentation date: 2017.01

  • 「メタボウォッチ」-スマホを活用して成人男女の生活習慣と体型の関連性を探る:時間栄養・運動学的観点から-

    川上泰雄, 田中史子  [Invited]

    IoMTサミット2016 (第1回IoMT学会総会) 

    Presentation date: 2016.12

  • The power index of sit-to-stand test score with upright trunk predicts anatomical cross-sectional area of quadriceps femoris in middle-aged and elderly population.

    Saito, A, Ema, R, Inami, T, Maeo, S, Otsuka, S, Higuchi, M, Shibata, S, Kawakami, Y

    10th International conference on strength training 

    Presentation date: 2016.11

  • 高強度運動後の筋硬度と筋形状変化

    米津貴久, 池田尚樹, 川上泰雄, 福林徹

    第29回日本トレーニング科学会大会 

    Presentation date: 2016.10

  • 大腿四頭筋の伸長性運動で生じる筋損傷の好発部位とその課題依存性

    前大純朗, 齋藤輝, 大塚俊, 単西瑶, 金久博昭, 川上泰雄

    第29回日本トレーニング科学会 

    Presentation date: 2016.10

  • 加齢が大腿部の個々の筋量・筋力に及ぼす影響とその性差

    大塚俊, 齋藤輝, 前大純朗, 江間諒一, 田中史子, 柴田重信, 川上泰雄

    第29回日本トレーニング科学会 

    Presentation date: 2016.10

  • Muscle mechanics for exercise performance enhancement (keynote lecture).

    Kawakami, Y  [Invited]

    34th International Conference on Biomechanics in Sports 

    Presentation date: 2016.07

  • Inter-muscle differences in hamstrings strain during a straight leg raise test: an elastography study.

    Kawakami, Y, Komiya M, Ikeda, N, Inami, T  [Invited]

    21th Annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • Age-related increase in muscle deformability of the rectus femoris: Relevance to sarcopenia.

    Tanaka, F, Ates, F, Kawakami, Y

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • Local vibration stretching: A novel modality enhancing musculotendious stiffness while maintaining muscle strength.

    Ikeda, N, Yonezu, T, Inami, T, Kawakami, Y

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • Gender difference in muscularity of the quadriceps femoris in varsity rowers: relation to knee alignment.

    Ema, R, Wakahara, T, hirayama, K, Kawakami, Y

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • Efficacy of elastic shoe insoles in kinematics kinetics and muscle activity during walking and running.

    Shiotani, H, Fukuda, W, Kawakami, Y

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • The effect of wearing masai barefoot technology shoes on recovery after marathon running.

    Nakagawa, K, Inami, T, Yonedu, T, Kenmotsu, Y, Narita, T, Kawakami, Y, Kanosue, K

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • Structure and function of human fascia lata: site-dependence of thickness and fiber orientation.

    Otsuka, S, Ohmichi, Y, Ohmichi, M, Yakura, T, Naito, M, Nakano, T, Kawakami, Y

    21st annual Congress of the European College of Sport Science 

    Presentation date: 2016.07

  • 超音波法による筋腱複合体特性の評価:骨格筋の「量と質」を可視化する

    川上泰雄  [Invited]

    日本超音波骨軟組織学会第28回超音波ハンズオンセミナー初級編 

    Presentation date: 2016.04

  • Decrease in the rate of torque development after static stretching is independent of the change in musculotendinous elastic properties.

    Ikeda, N, Yonezu, T, Inami, T, Kawakami, Y

    The 2nd International Symposium on"Health Promotion: The Joy of Sports and Exercise" Waseda Univ. 

    Presentation date: 2016.03

  • 大腿部筋膜の構造と機能(第1報):深筋膜における線維走行の部位比較

    大塚俊, 大道裕介, 大道美香, 矢倉富子, 内藤宗和, 中野隆, 川上泰雄

    第121回日本解剖学会総会・全国学術集会 

    Presentation date: 2016.03

  • Musculo-mechanical aspects of sprint running (invited speech).

    Kawakami, Y  [Invited]

    Kasetsart University Kamphaeng Saen Campus 12nd National Conference in the Field of Health & Sport Science 

    Presentation date: 2015.12

  • プライオメトリックトレーニングが腱スティフネスおよびドロップジャンプ中の筋腱動態に与える影響

    平山邦明, 岩沼聡一朗, 池田尚樹, 吉川亜有美, 江間諒一, 川上泰雄

    第28回日本トレーニング科学会大会 

    Presentation date: 2015.10

  • 一流スプリンターの筋腱特性

    Kawakami, Y  [Invited]

    2014 International Conference of Korean Society of Sport Biomechanics 

    Presentation date: 2014.09

  • Musculo-mechanical profile of world top sprinters (keynote lecture).

    Kawakami, Y  [Invited]

    2014 International Conference of Korean Society of Sport Biomechanics. 

    Presentation date: 2014.09

  • Muscle-tendon unit in humans

    川上泰雄  [Invited]

    第22回日本運動生理学会大会(招待講演) 

    Presentation date: 2014.07

  • 静的ストレッチングとランニングを組み合わせたウォームアップが跳躍能力に及ぼす影響

    池田尚樹, 川上泰雄

    第22回日本運動生理学会大会 

    Presentation date: 2014.07

  • 骨格筋を筋腱複合体として捉える: 基礎知識および最近の知見

    川上泰雄  [Invited]

    第22回日本運動生理学会大会モーニングセッション 

    Presentation date: 2014.07

  • 前脛骨筋の伸張性収縮時のトルクの角速度依存性

    Kawakami, Y, Hishikawa, K, Shimamoto, K, Mogi, Y

    7th World Congress of Biomechanics 

    Presentation date: 2014.07

  • Velocity dependence of maximal eccentric dorsiflexion in humans: Effect of muscle activity and length-force property of the tibialis anterior.

    Kawakami, Y, Hishikawa, K, Shimamoto, K, Mogi, Y  [Invited]

    7th World Congress of Biomechanics 

    Presentation date: 2014.07

  • 等尺性足関節底屈時のトルク増加速度がトルク−筋放電量関係に及ぼす影響

    Kawakami, Y, Hatano, J, Wakahara, T

    19th Annual Congress of the European College of Sport Science 

    Presentation date: 2014.07

  • Effect of the rate of torque development on isometric plantar flexion torque-EMG relationship: fascicle behavior matters.

    Kawakami, Y, Hatano, J, Wakahara, T  [Invited]

    19th Annual Congress of the European College of Sport Science 

    Presentation date: 2014.07

  • Proceedings of the 20th CISM-IFToMM Symposium on Robot Design

    Otani T, Uryu, K, Yahara, M, Iizuka, A, Hamamoto, S, Miyamae, S, Hashimoto, K, Destephe, M, Sakaguchi, M, Kawakami, Y.,Lim, H. O, Takanishi

    Dynamics and Control 

    Presentation date: 2014.06

  • Development of rotational joint leg that mimics elastic characteristics of human leg in running stance phase.

    Otani T, Uryu, K, Yahara, M, Iizuka, A, Hashimoto, K, Destephe, M, Sakaguchi, M, Kawakami, Y, Lim, H. O, Takanishi A

    2014 IEEE International Conference on Robotics and Automation 

    Presentation date: 2014.05

  • Running model and hopping robot using pelvic movement and leg elasticity.

    Otani T, Yahara, M, Uryu, K, Iizuka, A, Hashimoto, K, Kishi, T, Endo, N, Sakaguchi, M, Kawakami, Y, Hyon, S. H.,Lim, H. O, Takanishi, A

    Proceedings of the 2014 IEEE International Conference on Robotics and Automation 

    Presentation date: 2014.05

  • Muscle size and strength of children

    川上泰雄  [Invited]

    日本学術振興会公開シンポジウム「子どもの動きの獲得に必要な運動・身体活動」 

    Presentation date: 2014.03

  • 子供の動きを支える筋力

    川上泰雄  [Invited]

    日本学術会議公開シンポジウム「子どもの動きの獲得に必要な運動・身体活動」 

    Presentation date: 2014.03

  • 超音波法による筋腱特性の評価: その個人差と可塑性

    川上泰雄  [Invited]

    運動器超音波研究会 

    Presentation date: 2014.03

  • On the validity of evaluation of human tendinous tissues elasticity in vivo by ultrasonography.

    Kawakami, Y, Mogi, Y, Ikeda, N  [Invited]

    The 9th International Sport Science Symposium on "Active Life" Waseda Univ. 

    Presentation date: 2013.11

  • 人間の骨格筋の形状と機能

    Kawakami, Y  [Invited]

    XXIV Congress of the International Society of Biomechanics 

    Presentation date: 2013.08

  • Form and function of skeletal muscle tendon unit in humans.

    Kawakami, Y  [Invited]

    XXIV Congress of the International Society of Biomechanics 

    Presentation date: 2013.08

  • 加齢や不活動により骨格筋の変化と身体運動の効果

    川上泰雄  [Invited]

    公開セミナー: 高齢者が元気で暮らし続けるには(早稲田大学スポーツ科学学術院・やわらグループ共催) 

    Presentation date: 2013.06

  • 腱および腱膜の弾性エネルギー貯蔵能力

    Kawakami, Y  [Invited]

    Connect 2013: Connective Tissues in Sports Medicine 

    Presentation date: 2013.04

  • Kinetic storage of tendons and aponeuroses (chair and speaker).

    Kawakami, Y  [Invited]

    Connect 2013: Connective Tissues in Sports Medicine. 

    Presentation date: 2013.04

  • 一流スプリンターのバイオメカニクス的特性

    Kawakami, Y  [Invited]

    The 8th International Sport Sciences Symposium on "Active Life" 

    Presentation date: 2013.02

  • Biomechanical profile of world top sprinters.

    Kawakami, Y  [Invited]

    The 8th International Sport Sciences Symposium on "Active Life" 

    Presentation date: 2013.02

  • 筋・腱のバイオメカニクス研究の最新の知見とトレーニング実践への応用

    川上泰雄  [Invited]

    国立スポーツ科学センター講演会 

    Presentation date: 2013.02

  • 身体の「バネ」能力-パフォーマンスレベル向上の要因について-

    川上泰雄  [Invited]

    (社)アスリートケア 2012年度研修会 

    Presentation date: 2012.10

  • How to publish papers in international journals

    川上泰雄  [Invited]

    第67回日本体力医学会(教育講演)第67回日本体力医学会(教育講演) 

    Presentation date: 2012.09

  • 国際誌に掲載されるための主要ポイント アクセプトを目指して

    川上泰雄  [Invited]

    第67回日本体力医学会(教育講演) 

    Presentation date: 2012.09

  • Series elasticity of human muscles: phenomena and whereabouts.

    Kawakami, Y  [Invited]

    Seminar in the Institute of Physical Therapy College of Medicine National Taiwan University 

    Presentation date: 2012.08

  • Series elasticity of the triceps surae muscle-tendon unit in humans.

    Kawakami, Y  [Invited]

    Seminar in the Faculty of Human Movement Science Frije Universiteit Amsterdam 

    Presentation date: 2012.07

  • 運動中の筋膜・腱膜の挙動: 超音波法による可視化の試み

    川上泰雄  [Invited]

    日本超音波骨軟組織学会第3回北陸分科会(招待講演) 

    Presentation date: 2011.11

  • 身体運動と筋・腱の動態

    川上泰雄  [Invited]

    第26回日本整形外科学会基礎学術集会(パネルディスカッション) 

    Presentation date: 2011.10

  • 下腿三頭筋の弾性要素: 腱組織と足アーチ

    川上泰雄  [Invited]

    日本超音波骨軟組織学会 第23回西日本学術集会 

    Presentation date: 2011.09

  • Series elastic component in humans: anatomical basis and functional implications.

    Kawakami, Y  [Invited]

    Seminar in the Faculty of Kinesiology University of Calgary 

    Presentation date: 2011.09

  • 人間の筋腱特性とその機能的意義

    川上泰雄  [Invited]

    第39回青森県スポーツ医学研究会 

    Presentation date: 2011.09

  • 筋腱相互作用に関する最近の知見

    川上泰雄  [Invited]

    鹿屋体育大学研究セミナー(招待講演) 

    Presentation date: 2010.12

  • 断裂後のアキレス腱の形態的・力学的特性の変化

    川上泰雄, 若原卓, 川本伸一  [Invited]

    第10回日本超音波骨軟組織学会学術総会 

    Presentation date: 2010.10

  • ローイング運動の生理学・バイオメカニクス

    川上泰雄  [Invited]

    第65回日本体力医学会大会ワークショップ 

    Presentation date: 2010.09

  • 腱伸長と筋力との対応関係に関する新知見

    Kawakami, Y, Mitsukawa, N, Sugisaki, N, Miyamoto, N, Yanai, T, Kanehisa, H, Fukunaga, T

    World Congress of Biomechanics 

    Presentation date: 2010.08

  • Does tendon elongation accurately represent muscle force?: some contradicting findings on human gastrocnemius ands soleus muscle tendon units.

    Kawakami, Y, Mitsukawa, N, Sugisaki, N, Miyamoto, N, Yanai, T, Kanehisa, H, Fukunaga, T  [Invited]

    6th World Congress of Biomechanics 

    Presentation date: 2010.08

  • 身体のバネ-現象論と解剖学的所在

    川上泰雄  [Invited]

    日本超音波骨軟組織学会第23回西日本支部中部分科会 

    Presentation date: 2010.02

  • 人間の筋腱特性および筋腱相互作用の個人差: トレーニングへの応用の可能性

    川上泰雄, 宮本直和, 若原卓, 光川眞壽, 佐久間淳, 平山邦明  [Invited]

    文部科学省学術フロンティア研究プロジェクト 第4回研究発表会 

    Presentation date: 2010.01

  • In vivo ultrasound imaging of fasciae (Invited Speech).

    Kawakami, Y  [Invited]

    Second International Fascia Research Congress 

    Presentation date: 2009.10

  • 超音波法による筋膜の可視化

    Kawakami Y  [Invited]

    Second International Fascia Research Congress 

    Presentation date: 2009.10

  • Influence of tendon stiffness on joint power enhancement by a counter-movement against various loads.

    Miyamoto, N, Murata, K, Wakahara, T, Sugisaki, N, Kanehisa, H, Yanai, T, Fukunaga, T, Kawakami, Y

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • Joint performance during isokinetic knee extension and vastus lateralis tendon behavior.

    Kawakami, Y, Shimizu, M, Miyamoto, N, Wakahara, T, Mitsukawa, N, Hirayama, K, Yanai, T, Kanehisa, H, Fukunaga, T  [Invited]

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • The role of muscle-tendon interaction in the individuality of work enhancement by counter-movement.

    hirayama, K, Miyamoto, N, Sugisaki, N, Kanehisa, H, Yanai, T, Fukunaga, T, Kawakami, Y

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • The effect of speed movement to muscle soreness and dysfunction after exercise.

    Kurihara, T, Sakuma, J, Kanehisa, H, Fukunaga, T, Kawakami, Y

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • Velocity fields of in vivo human skeletal msucle tissues during dynamic joint actions.

    Oda, T, Kinugasa, R, Himeno, R, Kawakami, Y

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • Architectural factors influencing maximal muscle power in vivo.

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T, Yanai, T

    2009 Workshop on Multi-Scale Muscle Mechanics 

    Presentation date: 2009.09

  • 収縮強度および運動単位の動員度がPostactivation Potentiationに及ぼす影響

    福谷充輝, 金久博昭, 宮本直和, 川上泰雄, 矢内利政

    日本体育学会第60回記念大会 

    Presentation date: 2009.08

  • 等尺性収縮に伴う肘関節屈曲筋群の横断面変化

    赤木亮太, 岩沼聡一朗, 金久博昭, 福永哲夫, 川上泰雄

    日本体育学会第60回記念大会 

    Presentation date: 2009.08

  • Shift of the optimum fascicle length after eccentric exercise on the ascending limb of the force-length relationship.

    Lee, H.-D, Kawakami, Y, Kim, S.-J

    XXII Congress of the International Society of Biomechanics 

    Presentation date: 2009.07

  • Passive tension-length relations of human triceps surae muscles after repeated eccentric-concentric exercise.

    Kurihara, T, Sakuma, J, Fukunaga, T, Kawakami, Y

    XXII Congress of the International Society of Biomechanics 

    Presentation date: 2009.07

  • Local behavior of fascicles in human skeletal muscles in vivo during dynamic movements.

    Oda, T, Kinugasa, R, Yamauchi, J, Iwanuma, S, Himeno, R, Kawakami, Y

    XXII Congress of the International Society of Biomechanics 

    Presentation date: 2009.07

  • Estensibility of the human Achilles tendon during isometric contraction: an in vivo MRI study.

    Iwanuma, S, Akagi, R, Kurihara, T, Ikegawa, S, Kanehisa, H, Fukunaga, T, Kawakami, Y

    14th Annual Congress of the European College of Sport Science 

    Presentation date: 2009.06

  • Architectural features of human anterior duirng passive ankle angle changes measured by 3D-ultrasonography.

    Ikegawa, S, Kurihara, T, Iwanuma, S, Akagi, R, Sakaguchi, M, Kanehisa, H, Fukunaga, T, Kawakami, Y

    14th Annual Congress of the European College of Sport Science 

    Presentation date: 2009.06

  • A 6-week stretching program alters mechanical and architectural properties of the gastrocnemius muscle-tendon unit.

    Kato, E, Kanehisa, H, Fukunaga, T, Kawakami, Y

    14th Annual Congress of the European College of Sport Science 

    Presentation date: 2009.06

  • Applicability of segmental bio-electrical impedance for estimating skeletal muscle volume in childeren aged 6-12 years.

    Ohta, M, Midorikawa, T, Hikihara, Y, Masuo, Y, Sakamoto, S, Kawakami, Y, Kanehisa, H, Fukunaga, T

    14th Annual Congress of the European College of Sport Science 

    Presentation date: 2009.06

  • Muscle/tendon behavior during contraction: findings on humans and rats.

    Kawakami, Y  [Invited]

    Symposium for Dr. Peter Huijing 

    Presentation date: 2009.04

  • 身体運動における骨格筋と腱の役割

    川上泰雄  [Invited]

    文部科学省学術フロンティア研究プロジェクト 第3回学術講演会 

    Presentation date: 2008.02

  • 人体筋の機能と筋腱特性

    川上泰雄, 加藤えみか, 光川眞壽, 岩沼総一朗, 福永哲夫  [Invited]

    文部科学省学術フロンティア研究プロジェクト「ライフステージに応じた健康増進と多様性保持」第2回研究会 

    Presentation date: 2007.12

  • 柔軟性のトレーニング効果(教育講演)

    川上泰雄  [Invited]

    日本トレーニング科学会第20回大会 

    Presentation date: 2007.11

  • 垂直跳びによるパワー発揮特性の類型化の試み: サッカー選手を対象として

    清水美奈, 平山邦明, 星川佳広, 福永哲夫, 川上泰雄

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • 筋の力発揮の速度が腱の粘弾性におよぼす影響

    田村恵彦, 栗原俊之, 若原卓, 加藤えみか, 阪口正律, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • 同一挙上重量における両側性と一側性の肘関節屈曲伸展動作中の筋活動

    福井俊太郎, 高井洋平, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • バスケットボールのフリースロー成功率に及ぼす関節運動の影響

    元安陽一, 勝亦陽一, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • 発育期の野球選手における投球スピードの1年間の変化

    勝亦陽一, 丸山洋輔, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • BI法を用いた小学生の部位別骨格筋量推定の可能性

    太田めぐみ, 緑川泰史, 増尾善久, 坂本静男, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • 異なるストレッチング方法が関節可動域と腱の粘弾性に及ぼす影響(学会賞受賞)

    加藤えみか, 飯森沙百合, 栗原俊之, 福永哲夫, 川上泰雄

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • 異なる衝撃緩衝性を有するシューズがランニング中の脚スティフネスと下肢の関節トルクに及ぼす影響

    阪口正律, 小林海, 元安陽一, 福永哲夫, 江口貴弘, 川上泰雄

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • Stretch-Shortening Cycle (SSC) 運動中の腓腹筋とヒラメ筋の筋と腱の力学量の推定

    佐久間淳, 川上泰雄, 福永哲夫

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • エキセントリック収縮時に下腿三頭筋に生じる応力・ひずみの大きさとその分布: シミュレーション研究

    小田俊明, 金久博昭, 川上泰雄, 姫野龍太郎

    第20回日本トレーニング科学会大会 

    Presentation date: 2007.11

  • ジャンプ時におけるアキレス腱組織のひずみと応力の推定

    小田俊明, 川上泰雄, 片岡弘之, 横田秀夫, 姫野龍太郎

    シンポジウム: ヒューマン・ダイナミクス 

    Presentation date: 2007.11

  • 人間の骨格筋における筋腱相互作用とスポーツパフォーマンスの関係(招待講演)

    川上泰雄  [Invited]

    大阪体育学会講演会 

    Presentation date: 2007.11

  • Design for effective power production in human movements: musculoskeletal perspective (Invited Speech).

    Kawakami, Y  [Invited]

    International Symposium on Nature-Inspired Technology 

    Presentation date: 2007.10

  • 人間の骨格筋のパワー発揮特性

    Kawakami, Y  [Invited]

    International Symposium on Nature-Inspired Technology 

    Presentation date: 2007.10

  • 光学3次元人体形状計測に基づく体表面積の推定式の作成

    設楽佳世, 油井明子, 土井正裕, 並木幸久, 若原卓, 金久博昭, 川上泰雄, 福永哲夫

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 足関節角度の違いがアキレス腱の形状に与える影響

    岩沼聡一郎, 栗原俊之, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 持続的な最大下等尺性足関節底屈トルク発揮中の下腿三頭筋の筋活動および腱伸長の変化

    光川眞壽, 野入篤志, 杉崎範英, 宮本直和, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 能動的および受動的な腱伸長が筋腱複合体の力学的特性に及ぼす影響

    加藤えみか, 光川眞壽, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 最大随意収縮後に単収縮張力が増強する要因を探る-筋束および腱組織の長さに着目して-

    宮本直和, 光川眞壽, 杉崎範英, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 3次元超音波法をもちいた収縮中の腱組織の長さ変化測定

    池川繁樹, 栗原俊之, 金久博昭, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • ヒト大腿四頭筋における伸張性筋活動後の等尺性筋力増強

    杉崎範英, 川上泰雄, 福永哲夫

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 生体電気インピーダンス法(BI法)による下肢骨格筋量の推定における測定姿勢の検討

    冨田真司, 増尾善久, 高井洋平, 太田めぐみ, 川上泰雄, 福永哲夫

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 発育期男子における腓腹筋の筋・腱の形状

    栗原俊之, 金久博昭, 安部孝, 角田直也, 加藤えみか, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 中学生陸上競技選手のスプリントパフォーマンスの縦断的変化

    小林海, 勝亦陽一, 土江寛裕, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 筋形態および筋機能の変化が投球スピードの変化に及ぼす影響

    勝亦陽一, 川上泰雄, 福永哲夫

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • ローイング動作中の発揮パワーと筋活動の関係

    四谷高広, 下田学, 福永哲夫, 川上泰雄

    第62回日本体力医学会大会 

    Presentation date: 2007.09

  • 身体運動中の骨格筋のふるまい?超音波法による生体計測?(招待講演)

    川上泰雄  [Invited]

    第7回日本超音波骨軟組織学会学術総会大会 

    Presentation date: 2007.09

  • 関節角度の違いがPostactivation potentiationに与える影響

    宮本直和, 福永哲夫, 川上泰雄

    日本体育学会第58回大会 

    Presentation date: 2007.09

  • 中高年齢者における関節トルクおよび筋力と筋断面積指標との関係-安静時と最大等尺性収縮時の比較-

    赤木亮太, 高井洋平, 福田誠, 金久博昭, 太田めぐみ, 川上泰雄, 福永哲夫

    日本体育学会第58回大会 

    Presentation date: 2007.09

  • ボート競技におけるオフシーズントレーニングの縦断的検討-大学ボート部員を対象として-

    四谷高広, 下田学, 福永哲夫, 川上泰雄

    日本体育学会第58回大会 

    Presentation date: 2007.09

  • 3次元肩甲骨キネマティクス測定法の検討-Magnetic tracking deviceとMRI法の比較-

    村田浩一郎, 吉村達彦, 矢内利政, 川上泰雄, 福永哲夫

    日本体育学会第58回大会 

    Presentation date: 2007.09

  • 関節運動制限下での投球スピードにおける大学野球選手と未経験者の比較

    勝亦陽一, 丸山洋輔, 川上泰雄, 福永哲夫

    日本体育学会第58回大会 

    Presentation date: 2007.09

  • 和弓の押手技術が矢の速度に与える影響の力学的考察.

    井出敦夫, 川上泰雄

    第40回日本武道学会大会 

    Presentation date: 2007.08

  • Presentation of target torque level and error information enhance maximal voluntary elbow flexion torque.

    Fukuda, M, Takai, Y, Fukunaga, T, Kawakami, Y

    American Society of Biomechanics 2007 Annual Conference 

    Presentation date: 2007.08

  • Determination of the psoas major muscle thickness by B-mode ultrasonography.

    Katsumata, Y, Takai, Y, Kawakami, Y, Fukunaga, T

    American Society of Biomechanics 2007 Annual Conference 

    Presentation date: 2007.08

  • Changes in leg stiffness and sprint characteristics during the acceleration phase of running in top sprinters.

    Kobayashi, K, Iso, S, Kanosue, K, Tsuchie, H, Fukunaga, T, Kawakami, Y

    American Society of Biomechanics 2007 Annual Conference 

    Presentation date: 2007.08

  • Muscle-tendon interaction in counter-movement exercise: effect of movement speed.

    Kawakami, Y, Sakuma, J, Fukunaga, T  [Invited]

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Relationship between fascicle length and surface EMG responses of the gastrocnemius muscle during maximal static plantar flexions.

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Aponeurosis and tendon length changes in tibialis anterior muscle upon contraction measured by 3D-ultrasonography. 20th Congress of the European College of Sport Science

    Ikegawa, S, Kurihara, T, Kanehisa, H, Fukunaga, T, Kawakami, Y

    Presentation date: 2007.07

  • Effect of resistance training and stretching on elastic property of muscle-tendon complex.

    Fukunaga, T, Kubo, K, Kawakami, Y

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • The behavior of medial gastrocnemius and soleus muscles as related to force decline during repeated bouts of isometric plantar flexions.

    Mitsukawa, N, Sugisaki, N, Kanehisa, H, Fukunaga, T, Kawakami, Y

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Applicability of segmental bio-electrical impedance for estimating skeletal muscle volume of junior high school students.

    Ohta, M, Abe, T, Miyatani, M, Masuo, Y, Takeshita, K, Ishiguro, N, Kawakami, Y, Kanehisa, H, Fukunaga, T

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Effect of hip joint angles on the fascicle length of the vastus lateralis muscle during maximal voluntary isometric knee extension.

    Sugisaki, N, Kawakami, Y, Kanehisa, H, Fukunaga, T

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Lower-limb muscular activities during physical tasks of daily living are higher in the elderly compared with the young.

    Takai, Y, Sawai, S, Shimada, M, Kanehisa, H, Kawakami, Y, Fukunaga, T

    20th Congress of the European College of Sport Science 

    Presentation date: 2007.07

  • Effects of submaximal muscle contraction and stretching on vertical jump technique.

    Kato, E, Fukunaga, T, Kawakami, Y

    XXIst Congress of International Society of Biomechanics 

    Presentation date: 2007.07

  • Gastrocnemius muscle architecture and external tendon length in young boys.

    Kurihara, T, Kanehisa, H, Abe, T, Tsunoda, N, Fukunaga, T, Kawakami, Y

    XXIst Congress of International Society of Biomechanics 

    Presentation date: 2007.07

  • Effects of muscle architecture on force enchancement following active muscle stretching in human tibialis anterior in vivo.

    Lee, H.-D, Kawakami, Y, Herzog, W

    XXIst Congress of International Society of Biomechanics 

    Presentation date: 2007.07

  • 身体運動を測る:スポーツにおけるバイオメカニクスの役割(招待講演)

    川上泰雄  [Invited]

    早稲田大学スポーツ科学研究センター設立記念シンポジウム 

    Presentation date: 2007.03

  • 受動伸長時における下腿三頭筋の局所ひずみの大きさ・分布に腱膜が与える影響

    小田俊明, 姫野龍太郎, 金久博昭, 加藤えみか, 福永哲夫, 川上泰雄

    日本体育学会東京支部第34回大会 

    Presentation date: 2007.03

  • 下腿三頭筋の体積とアキレス腱の横断面積の関係

    岩沼総一郎, 福永哲夫, 川上泰雄

    日本体育学会東京支部第34回大会 

    Presentation date: 2007.03

  • 身体運動中の筋腱複合体のふるまい(招待講演)

    川上泰雄  [Invited]

    第7回フィールドケア21 

    Presentation date: 2007.01

  • 人間の筋腱特性の性差および加齢変化

    川上泰雄  [Invited]

    文部科学省学術フロンティア研究プロジェクト「ライフステージに応じた健康増進と多様性保持」第1回研究会 

    Presentation date: 2006.12

  • 骨格筋の特性について(招待講演)

    川上泰雄  [Invited]

    近江理学療法勉強会 

    Presentation date: 2006.09

  • Body Line Scanner (BLS)による身体セグメント別体積測定

    設楽佳世, 福永哲夫, 川上泰雄, 金久博昭, 永島秀彦, 近藤隆, 山本百合, 守屋有佳里, 小野寺正道, 福渡 靖

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 安静時および最大等尺性筋活動時の肘関節屈筋群筋厚および上腕周径囲:測定位置の影響

    赤木亮太, 金久博昭, 川上泰雄, 福永哲夫

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 日常生活動作を利用したトレーニング動作の有用性

    高井洋平, 金久博昭, 川上泰雄, 福永哲夫

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • ヒトアキレス腱の形状と力発揮時の応力分布および局所変形との関係-シミュレーション研究-

    小田俊明, 姫野龍太郎, 栗原俊之, 金久博昭, 加藤えみか, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 生体電気インピーダンス(BI)法を用いた筋形状変化推定に関する検討

    美濃羽弘樹, 赤木亮太, 太田めぐみ, 増尾善久, 川上泰雄, 福永哲夫

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 足関節可動域の性差および年代差とアキレス腱伸長の関係

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 予備緊張による短縮性トルク増加の要因

    千野謙太郎, 小田俊明, 福永哲夫, 川上泰雄

    第61回日本体力医学会大会予稿集 

    Presentation date: 2006.09

  • 反動動作中の筋腱複合体の動態(招待講演)

    川上泰雄  [Invited]

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 最大等尺性足底反復時の筋疲労と筋束動態

    光川眞壽, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 大腿四頭筋モーメントアーム長の推定方法間比較

    杉崎範英, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 下腿後面の筋厚とアキレス腱の横断面積の比較

    岩沼聡一朗, 永吉俊彦, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 超音波法を用いたヒラメ筋の力?速度関係の生体計測

    千野謙太郎, 小田俊明, 栗原俊之, 永吉俊彦, 加藤えみか, 深代千之, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • レジスタンストレーニングによる筋線維および腱組織の適応と筋腱複合体の力発揮特性との関係

    小田俊明, 長野明紀, 金久博昭, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 等尺性収縮中の腓腹筋および前脛骨筋の筋形状の部位差

    栗原俊之, 金久博昭, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 生体電気インピーダンス(BI)法を用いた筋量推定に関する検討

    美濃羽弘樹, 赤木亮太, 太田めぐみ, 増尾善久, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 足部底背屈動作における下腿三頭筋の収縮動態

    佐久間淳, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 膝関節角度が伸張性足底屈トルクに与える影響

    若原卓, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 肘関節屈曲における筋張力と筋断面積指標の関係:安静時と最大等尺性筋活動時の比較

    赤木亮太, 金久博昭, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 異なる強度の等尺性底屈トルク発揮が下腿三頭筋・腱の伸張性に及ぼす影響

    加藤えみか, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 一流短距離選手にみられる加速局面の脚スティフネスおよび関節スティフネスの変化

    小林海, 土江寛裕, 松尾彰文, 彼末一之, 礒繁雄, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 和弓射術のパフォーマンス評価のためのパラメータの検討

    井出敦夫, 永吉俊彦, 加藤えみか, 光川眞壽, 小林海, 三好裕介, 栗原俊之, 千野謙太郎, 小田俊明, 彼末一之, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 大学野球投手と未経験者における投球動作中の床反力の比較

    勝亦陽一, 丸山洋輔, 川上泰雄, 福永哲夫

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • ボート競技におけるローイング動作の特徴-熟練者と未熟練者のキネマティクスおよびキネティクスの比較-

    四谷高広, 三好裕介, 小林海, 光川眞壽, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 漕運動の機械的効率とローイング動作との関係

    三好裕介, 四谷高広, 小林海, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 肩回旋腱板筋群(ローテータカフ)の3次元形態特性

    吉村達彦, 岩沼聡一朗, 光川眞壽, 村田浩一郎, 小田俊明, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 筋疲労回復手段としてのスタティック・ストレッチングの効果

    金子 潤, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • 腱の弾性と筋活動が反動効果に与える影響

    平山邦明, 加藤えみか, 永吉俊彦, 杉崎範英, 光川眞壽, 福永哲夫, 川上泰雄

    第19回日本バイオメカニクス学会大会 

    Presentation date: 2006.09

  • Tendon mechanical properties: influence of muscle actions (Invited Speech).

    Kawakami, Y, Sugisaki, N, Chino, K, Oda, T, Fukunaga, T  [Invited]

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • Effect of fascicle behavior on voluntary and electrically evoked eccentric torques.

    Chino, K, Mitsukawa, N, Kobayashi, K, Miyoshi, Y, Fukunaga, T, Fukashiro, S, Kawakami, Y

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • Effect of muscle-tendon interaction on torque development of isometric tetanic contraction.

    Oda, T, Chino, K, Kurihara, T, Nagayoshi, T, Kato, E, Kanehisa, H, Fukunaga, T, Kawakami, Y

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • Changes in mechanical properties of Achilles tendon resulting from muscle contraction and stretching.

    Kato, E, Fukunaga, T, Kawakami, Y

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • Feasibility of resistance training employing daily physical actions for improvement of muscle strength.

    Takai, Y, Sugisaki, N, Kanehisa, H, Fukunaga, T, Kawakami, Y

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • Behavior of Achilles tendon and gastrocnemius aponeurosis during concentric and eccentric plantar flexions (Invited Speech).

    Kawakami, Y, Sugisaki, N, Chino, K, Kanehisa, H, Fukunaga, T  [Invited]

    19th Congress of the European College of Sport Science 

    Presentation date: 2006.07

  • 腱の力学的特性と収縮様式

    Kawakami, Y, Sugisaki, N, Chino, K, Oda, T, Fukunaga, T  [Invited]

    5th World Congress of Biomechanics 

    Presentation date: 2006.07

  • 足底屈運動中のアキレス腱のふるまい

    Kawakami, Y, Sugisaki, N, Chino, K, Kanehisa, H, Fukunaga, T

    19th Congress of the European College of Sport Science 

    Presentation date: 2006.07

  • 筋活動様式の用語について再考する(教育講演)

    川上泰雄  [Invited]

    日本体育学会東京支部第33回大会 

    Presentation date: 2006.03

  • ジャンプにおける筋腱複合体の動態(シンポジウム)

    川上泰雄  [Invited]

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • 下肢の自重負荷トレーニングが歩行・走行パワーに及ぼす影響-高齢者のホーム貯筋プロジェクト-

    高田佑輔, 赤木亮太, 竹下香寿美, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • 下肢の自重負荷トレーニングが高齢者の脚伸展パワーに与える効果-高齢者のホーム貯筋プロジェクト-

    永吉俊彦, 赤木亮太, 竹下香寿美, 金久博昭, 福永哲夫, 川上泰雄

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • 自重を利用した筋力トレーニングが身体機能に与える影響-高齢者のホーム貯筋プロジェクト-

    太田めぐみ, 赤木亮太, 竹下香寿美, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • 自重負荷トレーニングが筋力及び関節トルクに与える影響-高齢者のホーム貯筋プロジェクト-

    小林寛, 山下耕平, 竹下香寿美, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • 短縮性筋活動中の筋線維速度と筋速度の比較

    若原卓, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第56回大会 

    Presentation date: 2005.11

  • アメリカンフットボールクォーターバックの投球動作の3次元解析

    川上泰雄, 金井健斗, 栗原俊之, 福永哲夫  [Invited]

    第18回日本トレーニング科学会大会 

    Presentation date: 2005.11

  • 和弓における矢の飛翔エネルギーに関する研究

    井出敦夫, 永吉俊彦, 加藤えみか, 下田学, 光川眞壽, 小林海, 三好裕介, 小田俊明, 千野謙太郎, 依田玉枝, 彼末一之, 福永哲夫

    第18回日本トレーニング科学会大会 

    Presentation date: 2005.11

  • アキレス腱のどこが伸びるのか?

    永吉俊彦, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会大会 

    Presentation date: 2005.11

  • アイシングがその後の運動中の筋酸素化動態と血流量に与える影響

    光川眞壽, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会大会 

    Presentation date: 2005.11

  • 陸上競技選手と野球選手の100m疾走の特徴

    小林海, 土江寛裕, 勝亦陽一, 礒繁雄, 彼末一之, 福永哲夫, 川上泰雄

    第18回日本トレーニング科学会大会 

    Presentation date: 2005.11

  • 運動中の筋腱複合体のふるまい(シンポジウム)

    川上泰雄  [Invited]

    日本臨床バイオメカニクス学会 

    Presentation date: 2005.10

  • ゴルフ動作の測定(招待講演)

    川上泰雄  [Invited]

    日本ゴルフ学会第18回大会 

    Presentation date: 2005.09

  • 和弓における矢速の規定因子に関する研究

    井出敦夫, 川上泰雄

    日本武道学会第38回大会 

    Presentation date: 2005.09

  • In vivo muscle fiber kinetics during tetanic contraction.

    Oda, T, Kurihara, T, Chino, K, Kanehisa, H, Nagayoshi, T, Kato, E, Fukunaga, T, Kawakami, Y

    XXth International Society of Biomechanics 

    Presentation date: 2005.08

  • Three-dimensional architecture of human gastrocnemius and tibialis anterior muscles during isometric actions.

    Kurihara, T, Oda, T, Chino, K, Nagayoshi, T, Kato, E, Kanehisa, H, Fukunaga, T, Kawakami, Y

    XXth International Society of Biomechanics 

    Presentation date: 2005.08

  • Behavior of aponeurosis and external tendon of medial gastrocnemius muscle during dynamic plantar flexion exercise.

    Sugisaki, N, Kanehisa, H, Kawakami, Y, Fukunaga, T

    XXth International Society of Biomechanics 

    Presentation date: 2005.08

  • Effects of knee joint angle on the force-length and velocity characteristics of gastrocnemius muscle.

    Wakahara, T, Kanehisa, H, Kawakami, Y, Fukunaga, T

    XXth International Society of Biomechanics 

    Presentation date: 2005.08

  • Repetitive muscle contraction comes about plastic deformation for tendon.

    Kato, E, Oda, T, Chino, K, Kurihara, T, Nagayoshi, T, Fukunaga, T, Kawakami, Y

    XXth International Society of Biomechanics 

    Presentation date: 2005.08

  • スポーツ科学研究における超音波断層法利用の展開(招待講演)

    川上泰雄  [Invited]

    日本超音波骨軟組織学会第11回東日本支部学術集会および日本超音波骨軟組織学会第8回東日本支部学術集会 

    Presentation date: 2005.04

  • アメリカンフットボールクォーターバックの投球動作の解析:新たな3次元解析への試み

    川上泰雄  [Invited]

    日本トレーニング科学会第44回トレーニングカンファレンス 

    Presentation date: 2005.03

  • 筋腱の科学

    川上泰雄  [Invited]

    東京スポーツメディシンフォーラムin JISS 

    Presentation date: 2004.12

  • トッププロとアマチュアのゴルフスウィングの比較

    川上泰雄, 井出敦夫, 野澤むつこ, 永吉俊彦, 小林海, 小田俊明, 千野謙太郎, 栗原俊之, 加藤えみか, 福永哲夫  [Invited]

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 上肢の反動効果利用時の力発揮能力と投球速度の関係

    山下耕平, 東香寿美, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 垂直跳びにおいて重りをもつことが跳躍動作に及ぼす影響

    金子 潤, 杉崎範英, 東香寿美, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 大腿筋量の推定方法に関する検討

    太田めぐみ, 宮谷昌枝, 東香寿美, 石黒憲子, 増尾善久, 金久博昭, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • アメリカンフットボールのファンダメンタルヒットに関するバイオメカニクス的研究

    栗原俊之, 村井雄太, 金井建斗, 永吉俊彦, 加藤えみか, 井出敦夫, 小田俊明, 千野謙太郎, 福永哲夫, 川上泰雄

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 和弓の「離れ」における射手の押し手の挙動に関する研究

    井出敦夫, 下田学, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 加藤えみか, 小西あき, 福永哲夫, 川上泰雄

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 自重によるシットアップ及びスクワット動作における筋活動水準

    高井洋平, 杉崎範英, 東香寿美, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 力の立ち上がり局面の筋線維張力を決定する因子の経時変化

    小田俊明, 栗原俊之, 千野謙太郎, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 足関節の静的ストレッチング中にアキレス腱が伸長する

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 福永哲夫, 川上泰雄

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 動的筋力発揮における腓腹筋の腱膜および外部腱の動態

    杉崎範英, 金久博昭, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 6週間の等尺性筋力発揮トレーニングに伴う肘屈曲トルク及び上腕屈筋群筋厚の変化

    東香寿美, 勝亦陽一, 高井洋平, 赤木亮太, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • 6週間の等尺性筋力発揮トレーニングに伴うトルクと筋電図の変化

    勝亦陽一, 東香寿美, 高井洋平, 赤木亮太, 川上泰雄, 福永哲夫

    第17回トレーニング科学研究会大会 

    Presentation date: 2004.11

  • Strength training effects on muscle size and architecture: errors and interpretations (Invited Speech).

    Kawakami, Y  [Invited]

    4th International Conference of Strength Training. 

    Presentation date: 2004.11

  • 筋力トレーニングと筋形状

    Kawakami, Y  [Invited]

    4th International Conference of Strength Training 

    Presentation date: 2004.11

  • 高齢者にみられる足関節可動域の性差

    川上泰雄, 小田俊明, 永吉俊彦, 久野譜也, 金久博昭, 福永哲夫  [Invited]

    日本体育学会第55回大会 

    Presentation date: 2004.09

  • ヒト前脛骨筋における強縮/単収縮比と腱組織の力学的特性との関連

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    第59回日本体力医学会大会 

    Presentation date: 2004.09

  • 長時間の静的ストレッチングが下腿三頭筋の伸長に及ぼす急性効果

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 福永哲夫, 川上泰雄

    第59回日本体力医学会大会 

    Presentation date: 2004.09

  • 収縮中の腓腹筋および前脛骨筋の羽状角の3次元計測

    栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    第59回日本体力医学会大会 

    Presentation date: 2004.09

  • 筋音図解析によるCatchlike property発生機序の解明

    吉武康栄, 川上泰雄, 金久博昭, 福永哲夫

    第59回日本体力医学会大会 

    Presentation date: 2004.09

  • 3D-muscle functional MRIを用いた収縮様式の違いによる下腿三頭筋の筋活動特性の比較

    衣笠竜太, 川上泰雄, 福永哲夫

    第59回日本体力医学会大会 

    Presentation date: 2004.09

  • 強縮後の単収縮増強と筋線維動態の関連性

    川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫  [Invited]

    第18回日本バイオメカニクス学会大会 

    Presentation date: 2004.09

  • ヒト前脛骨筋における単収縮中の張力および筋線維長の経時変化

    小田俊明, 栗原俊之, 千野謙太郎, 金久博昭, 永吉俊彦, 加藤えみか, 福永哲夫, 川上泰雄

    第18回日本バイオメカニクス学会大会 

    Presentation date: 2004.09

  • ヒラメ筋の力-速度関係の生体計測

    千野謙太郎, 小田俊明, 金久博昭, 深代千之, 永吉俊彦, 福永哲夫, 川上泰雄

    第18回日本バイオメカニクス学会大会 

    Presentation date: 2004.09

  • 和弓の会・離れのバイオメカニクス-熟練射手における事例研究-

    井出敦夫, 川上泰雄

    日本武道学会第37回大会 

    Presentation date: 2004.08

  • 人間の骨格筋の形状と筋活動能力(招待講演)

    川上泰雄  [Invited]

    (財)生弓会平成16年度中央研修会 

    Presentation date: 2004.08

  • ファイバーが生み出す力とパワー:マッスルファイバーとテンドンファイバー(招待講演)

    川上泰雄  [Invited]

    みらいせんい展スポーツ系イベントシンポジウム「究極の繊維と人間のファイバーが生み出すオリンピック勝利への道:しなやかな叡知を!」 

    Presentation date: 2004.08

  • 3D-muscle functional MRIによる筋活動の計測

    衣笠竜太, 川上泰雄, 福永哲夫

    第12回日本運動生理学会大会 

    Presentation date: 2004.07

  • In vivo myofascial force transmission between passive EDL segments in humans.

    Kawakami, Y, Huijing, P. A. J. B. M, Ito, M, Muraoka, Y, Kubo, K, Fukunaga, T  [Invited]

    14th European Society of Biomechanics Conference. 

    Presentation date: 2004.07

  • 人間の骨格筋における力の側方伝達

    Kawakami, Y, Huijing, P. A. J. B. M, Ito, M, Muraoka, Y, Kubo, K, Fukunaga, T

    14th European Society of Biomechanics Conference 

    Presentation date: 2004.07

  • Catchlike property decreases the amplitude of mechanomyogram in humans.

    Yoshitake Y, Shinohara, M, Kawakami, Y, Fukunaga, T

    XVth Congress of the International Society of Electrophysiology and Kinesiology. 

    Presentation date: 2004.06

  • Localization of three-dimensional distribution of muscle activation using muscle functional magnetic resonance imaging.

    Kinugasa, R, Kawakami, Y, Fukunaga, T

    XVth Congress of the International Society of Electrophysiology and Kinesiology. 

    Presentation date: 2004.06

  • スポーツとバイオメカニクス?軟部組織の生体計測の視点から?(教育研修講演)

    川上泰雄  [Invited]

    第12回よこはまスポーツ整形外科フォーラム 

    Presentation date: 2004.06

  • 超音波法による骨格筋収縮動態の生体計測(招待講演)

    川上泰雄  [Invited]

    日本超音波骨軟組織学術研究会第9回東日本支部研究会 

    Presentation date: 2004.04

  • Analysis of human skeletal muscles by ultrasound (Invited Lecture).

    Kawakami, Y  [Invited]

    Conference of Korean Society of Sport Biomechanics. 

    Presentation date: 2004.03

  • 超音波法による人間の骨格筋の分析

    Kawakami, Y  [Invited]

    Conference of Korean Society of Sport Biomechanics 

    Presentation date: 2004.03

  • ローイングパワーの安定性がボートの艇速に及ぼす効果

    川上泰雄, 下田学  [Invited]

    第16回トレーニング科学研究会大会 

    Presentation date: 2003.11

  • バレエダンサーの足関節の特徴-足関節可動域と下腿三頭筋・腱の伸長に着目して

    加藤えみか, 小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 川上泰雄

    第16回トレーニング科学研究会大会 

    Presentation date: 2003.11

  • ベッドレストによる足関節可動域および筋腱複合体の受動伸長性の変化

    川上泰雄, 加藤えみか, 栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫  [Invited]

    日本体育学会第54回大会 

    Presentation date: 2003.09

  • 3次元超音波法を用いたヒト前脛骨筋体積の生体内計測

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫

    日本体育学会第54回大会 

    Presentation date: 2003.09

  • 等速性運動中の下腿三頭筋の筋線維動態には筋腱相互作用が多大な影響を及ぼす

    千野謙太郎, 小田俊明, 栗原俊之, 金久博昭, 深代千之, 川上泰雄, 福永哲夫

    日本体育学会第54回大会 

    Presentation date: 2003.09

  • ヒト下腿三頭筋の単収縮加重による発揮張力と筋線維長変化との関係

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 川上泰雄, 福永哲夫

    日本体育学会第54回大会 

    Presentation date: 2003.09

  • ヒト骨格筋線維の長さ?力特性は収縮強度によって変化する

    小田俊明, 栗原俊之, 千野謙太郎, 永吉俊彦, 加藤えみか, 金久博昭, 福永哲夫, 川上泰雄

    第58回日本体力医学会大会 

    Presentation date: 2003.09

  • Muscle functional MRIによる3次元T2 mappingの試み

    衣笠竜太, 川上泰雄, 福永哲夫

    第58回日本体力医学会大会 

    Presentation date: 2003.09

  • In vivo muscle fiber behavior in humans.

    Kawakami, Y, Oda, T, Chino, K, Kurihara, T, Nagayoshi, T, Kanehisa, H, Fukunaga, T  [Invited]

    World Congress on Medical Physics and Biomedical Engineering. 

    Presentation date: 2003.08

  • Velocity of shortening and lengthening of gastrocnemius and soleus muscle fibers during concentric and eccentric plantar flexions in humans.

    Chino, K, Oda, T, Kurihara, T, Nagayoshi, T, Kato, E, Kawakami, Y, Kanehisa, H, Fukunaga, T

    World Congress on Medical Physics and Biomedical Engineering. 

    Presentation date: 2003.08

  • Modeling the mechanical behaviour of skeletal muscle at different structural levels using a continuum approach.

    Lemos, R, Epstein, M, Herzog, W, Kawakami, Y, Kurihara, T, Wyvill, B

    World Congress on Medical Physics and Biomedical Engineering. 

    Presentation date: 2003.08

  • 人間生体における筋線維動態

    Kawakami, Y, Oda, T, Chino, K, Kurihara, T, Nagayoshi, T, Kanehisa, H, Fukunaga, T  [Invited]

    World Congress on Medical Physics and Biomedical Engineering 

    Presentation date: 2003.08

  • In vivo force-velocity relationship of the human triceps brachii muscles.

    Kawakami, Y, Kurihara, T, Oda, T, Chino, K, Nagayoshi, T, Kanehisa, H, Fukunaga, T, Toji, H, Kaneko M  [Invited]

    XIXth Congress of the International Society of Biomechanics 

    Presentation date: 2003.07

  • In vivo measurement of human tibialis anterior muscle volume using three-dimensional ultrasonography.

    Kurihara, T, Kawakami, Y, Nagayoshi, T, Oda, T, Chino, K, Kanehisa, H, Fukunaga, T

    XIXth Congress of the International Society of Biomechanics 

    Presentation date: 2003.07

  • Effects of elastic properties of muscle-tendon complex on sports performances (Muybridge Lecture).

    Fukunaga, T, Kubo, K, Kawakami, Y, Kanehisa, H

    XIXth Congress of the International Society of Biomechanics 

    Presentation date: 2003.07

  • ヒト骨格筋の収縮中の筋線維と腱のふるまい

    川上泰雄  [Invited]

    身体運動科学シンポジウム第10回記念大会 行動する身体と心-21世紀を支える身体運動の科学- 

    Presentation date: 2002.11

  • Architecture of contracting human gastrocnemius muscle: an approach from three-dimensional ultrasound imaging

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦

    身体運動科学シンポジウム第10回記念大会 行動する身体と心-21世紀を支える身体運動の科学- 

    Presentation date: 2002.11

  • 足背屈トルクと前脛骨筋の筋形状指標との間の関係

    永吉俊彦, 小田俊明, 千野謙太郎, 栗原俊之, 川上泰雄, 福永哲夫, 前田雅人, 丸山敦夫

    身体運動科学シンポジウム第10回記念大会 行動する身体と心-21世紀を支える身体運動の科学- 

    Presentation date: 2002.11

  • 伸張性筋活動の繰り返しによる骨格筋の力発揮特性の変化

    川上泰雄, 栗原俊之, 千野謙太郎, 小田俊明, 野坂和則, 福永哲夫  [Invited]

    日本体育学会第53回大会 

    Presentation date: 2002.10

  • 電気刺激誘発の筋収縮における刺激パターンと張力および筋腱複合体の関係

    吉武康栄, 川上泰雄, 栗原俊之, 金久博昭, 福永哲夫

    第57回日本体力医学会大会 

    Presentation date: 2002.09

  • 筋力発揮のバイオメカニクス(招待講演)

    川上泰雄  [Invited]

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 上腕三頭筋の力?速度関係のin vivo計測の試み

    川上泰雄, 栗原俊之, 小田俊明, 千野謙太郎, 永吉俊彦, 中井敬子, 金久博昭, 田路秀樹, 金子公宥, 福永哲夫  [Invited]

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 三次元超音波法を利用した筋体積推定法の検討

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 永吉俊彦, 金久博昭, 福永哲夫

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 筋力を推定する際の生理学的筋横断面積の有効性について

    永吉俊彦, 小田俊明, 千野謙太郎, 栗原俊之, 中井敬子, 川上泰雄, 福永哲夫, 前田雅人, 丸山敦夫

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 単収縮および単収縮加算時におけるヒト生体内の腓腹筋・ヒラメ筋の筋線維動態

    小田俊明, 千野謙太郎, 栗原俊之, 永吉俊彦, 中井敬子, 川上泰雄, 福永哲夫

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 下腿三頭筋の短縮性 伸張性筋活動中の筋線維動態

    千野謙太郎, 小田俊明, 栗原俊之, 中井敬子, 永吉俊彦, 川上泰雄, 金久博昭, 福永哲夫

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • 筋収縮に伴うアキレス腱の配列変化は筋腱接合部をどの程度移動させるのか?

    村松憲, 村岡哲郎, 川上泰雄, 福永哲夫

    第17回日本バイオメカニクス学会大会 

    Presentation date: 2002.09

  • Changes in mechanical properties of human tibialis anterior muscle following repeated eccentric contractions (symposium).

    Kawakami, Y, Kurihara, T, Chino, K, Oda, T, Nosaka, K, Fukunaga, T  [Invited]

    4th World Congress of Biomechanics 

    Presentation date: 2002.08

  • In vivo measurement of tendon elongation and fascicle length change during tensional summation.

    Oda, T, Chino, K, Kurihara, T, Kawakami, Y, Fukunaga, T

    4th World Congress of Biomechanics 

    Presentation date: 2002.08

  • In vivo muscle fiber behavior of the triceps surae muscles during concentric and eccentric plantar flexions.

    Chino, K, Oda, T, Kawakami, Y, Kanehisa, H, Fukunaga, T

    4th World Congress of Biomechanics 

    Presentation date: 2002.08

  • Architecture of contracting human gastrocnemius muscle: an approach from three-dimensional ultrasound imaging.

    Kurihara, T, Kawakami, Y, Oda, T, Chino, K, Fukunaga, T

    4th World Congress of Biomechanics 

    Presentation date: 2002.08

  • Behaviours of muscle-tendon complex during electrical stimulation with trains of linearly varying frequency in humans.

    Yoshitake Y, Kawakami, Y, Kanehisa, H, Fukunaga, T

    4th World Congress of Biomechanics 

    Presentation date: 2002.08

  • Different fatigue responses of triceps surae muscles to repeated isometric contractions revealed by in vivo fascicle length changes.

    Kawakami, Y, Shimoda, M, Oishi, Y, Oda, T, Chino, K, Kurihara, T, Kanehisa, H, Fukunaga, T  [Invited]

    Banff Symposium on Skeletal Muscle 

    Presentation date: 2002.08

  • In vivo estimation of behavior of muscle fiber and tendon during human movements.

    Fukunaga, T, Kawakami, Y, Kubo, K, Kanehisa, H

    Banff Symposium on Skeletal Muscle 

    Presentation date: 2002.08

  • In vivo measurement of tendon elongation and fascicle length change during tensional summation.

    Oda, T, Chino, K, Kurihara, T, Kawakami, Y, Fukunaga, T

    Banff Symposium on Skeletal Muscle 

    Presentation date: 2002.08

  • In vivo muscle fiber behavior of the triceps surae muscles during isokinetic concentric plantar flexions.

    Chino, K, Oda, T, Kurihara, T, Kawakami, Y, Kanehisa, H, Fukunaga, T

    Banff Symposium on Skeletal Muscle 

    Presentation date: 2002.08

  • Comparison between 2D and 3D ultrasonography for determining human skeletal muscle architecture.

    Kurihara, T, Kawakami, Y, Oda, T, Chino, K, Fukunaga, T

    Banff Symposium on Skeletal Muscle 

    Presentation date: 2002.08

  • ヒト生体における筋収縮時のアキレス腱伸張率の算出

    村松憲, 村岡哲郎, 川上泰雄, 福永哲夫

    日本運動生理学会大会 

    Presentation date: 2002.07

  • 骨格筋における筋?腱相互作用:生体計測によるアプローチ(招待講演)

    川上泰雄  [Invited]

    日本体力医学会関東地方会 

    Presentation date: 2002.07

  • 収縮中のヒト腓腹筋形状:超音波法による三次元構築

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 福永哲夫

    日本体力医学会関東地方会 

    Presentation date: 2002.07

  • ヒト生体における筋収縮時の腓腹筋・前脛骨筋の腱膜伸長特性

    村松憲, 村岡哲郎, 川上泰雄, 福永哲夫

    日本体力医学会関東地方会 

    Presentation date: 2002.07

  • 人体筋の形状と機能-既存のパラダイムへの挑戦-

    川上泰雄  [Invited]

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • 収縮中の腓腹筋形状:超音波法による三次元構築

    栗原俊之, 川上泰雄, 小田俊明, 千野謙太郎, 福永哲夫

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • 短縮性・伸張性足底屈運動中の下腿三頭筋の筋線維動態

    千野謙太郎, 小田俊明, 栗原俊之, 金久博昭, 福永哲夫

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • 下腿三頭筋の筋束動態からみた単収縮の加重プロセス

    小田俊明, 千野謙太郎, 栗原俊之, 川上泰雄, 福永哲夫

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • RQAによる筋電図の解析

    池川繁樹, 川上泰雄, 久保啓太郎, 村岡哲郎, 福永哲夫

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • 間欠的最大足底屈運動時の筋疲労に収縮間インターバルが及ぼす影響

    下田学, 川上泰雄, 小田俊明, 千野謙太郎, 栗原俊之, 金久博昭, 福永哲夫

    福永哲夫教授退官記念シンポジウム 運動を引き起こす筋の科学-新たな視野を求めて- 

    Presentation date: 2002.03

  • アキレス腱モーメントアームの新たな推定法の提案(学会賞受賞)

    川上泰雄, 中井敬子, 小田俊明, 千野謙太郎, 栗原俊之, 福永哲夫  [Invited]

    日本体育学会東京支部第29回大会 

    Presentation date: 2002.03

  • Architecture of human skeletal muscles and its functional implications.

    Kawakami, Y, Fukashiro, S  [Invited]

    Advances in Neural and Architectural Mechanisms That Control Muscle Activity and Movement 

    Presentation date: 2001.10

  • 柔軟性と筋・腱の特性との関係

    川上泰雄, 小田俊明, 千野謙太郎, 金久博昭, 福永哲夫, 安部孝  [Invited]

    日本体育学会第52回大会 

    Presentation date: 2001.09

  • 動作速度の異なる肘屈曲運動中の上腕二頭筋のEMG評価パラメータの特徴

    小田俊明, 千野謙太郎, 川上泰雄, 金子秀和, 岡田守彦

    日本体育学会第52回大会 

    Presentation date: 2001.09

  • 異なる収縮間インターバルでの反復運動が共働筋の筋束動態と筋収縮力に及ぼす影響

    大石芳江, 下田 学, 川上泰雄, 池川繁樹, 金久博昭, 福永哲夫

    第56回日本体力医学会大会 

    Presentation date: 2001.09

  • In vivo estimation of human Achilles tendon moment arm based on ultrasonography.

    Kawakami, Y, Nakai, K, Maganaris, C.N, Oda, T, Chino, K, Fukunaga, T  [Invited]

    25th Annual Meeting of the American Society of Biomechanics 

    Presentation date: 2001.08

  • Muscle fiber behavior during drop jump in human.

    Fukunaga, T, Kurokawa, S, Kawakami, Y

    25th Annual Meeting of the American Society of Biomechanics 

    Presentation date: 2001.08

  • Human skeletal muscle biomechanics-in vivo approach by ultrasonography-(Tutorial Lecture).

    Kawakami, Y, Fukunaga, T  [Invited]

    XVIIIth Congress of the International Society of Biomechanics 

    Presentation date: 2001.07

  • Flexibility is related to elasticity of tendon rather than muscle fibers: in vivo observation in humans.

    Kawakami, Y, Oda, T, Chino, K, Kanehisa, H, Fukunaga, T  [Invited]

    XVIIIth Congress of the International Society of Biomechanics 

    Presentation date: 2001.07

  • Mechanical properties of tendon and aponeurosis of human gastrcnemius muscle in vivo.

    Fukunaga, T, Muramatsu, T, Muraoka, T, Takeshita, D, Kawakami, Y

    XVIIIth Congress of the International Society of Biomechanics 

    Presentation date: 2001.07

  • Detecting displacement of innervation zone of biceps brachii muscle due to joint angle changes.

    Oda, T, Chino, K, Kawakami, Y, Kaneko, H, Okada, M

    XVIIIth Congress of the International Society of Biomechanics 

    Presentation date: 2001.07

  • Relationships between muscle power patterns and rowing performance.

    Tachibana, K, Furuhashi, T, Shimoda, M, Kawakami, Y, Fukunaga, T

    XVIIIth Congress of the International Society of Biomechanics 

    Presentation date: 2001.07

  • A proposal of computer simulation combined with fuzzy modeling for effective feedback to rower.

    Tachibana, K, Furuhashi, T, Shimoda, M, Kawakami, Y, Fukunaga, T

    VIIIth International Symposium on Computer Simulation in Biomechanics 

    Presentation date: 2001.07

  • 3週間のベッドレストによる筋形状および筋力発揮特性の変化とトレーニングの有効性

    川上泰雄, 宮谷昌枝, 黒川貞生, 村岡哲郎, 小田俊明, 千野謙太郎, 金久博昭, 福永哲夫, 中川央, 東香寿美  [Invited]

    第二回公開シンポジウム「不動・疑似微小重力環境の生体への影響」 

    Presentation date: 2001.03

  • 3週間のベッド安静が下肢筋群の腱組織の粘弾性に及ぼす影響

    久保啓太郎, 川上泰雄, 金久博昭, 福永哲夫

    第二回公開シンポジウム「不動・疑似微小重力環境の生体への影響」 

    Presentation date: 2001.03

  • 筋形状からみた受動トルクの規定要因

    村岡哲郎, 村松憲, 竹下大介, 川上泰雄, 福永哲夫

    第13回トレーニング科学研究会 

    Presentation date: 2001.03

  • 3週間のベッド安静が腱組織の弾性特性に及ぼす影響

    久保啓太郎, 秋間広, 神崎素樹, 川上泰雄, 金久博昭, 福永哲夫

    第13回トレーニング科学研究会 

    Presentation date: 2001.03

  • 足関節の柔軟性(可動域)には加齢と筋力レベルが影響を及ぼす

    小田俊明, 千野謙太郎, 川上泰雄, 福永哲夫

    第13回トレーニング科学研究会 

    Presentation date: 2001.03

  • In vivo determination of skeletal muscle architecture in humans using ultrasonography.

    Kawakami, Y, Abe, T, Fukunaga, T  [Invited]

    45th Annual Convention of American Institute of Ultrasound in Medicine 

    Presentation date: 2001.03

  • Effect of stretching training on the viscoelastic properties of human tendon structures in vivo.

    Kubo, K, Kanehisa, H, Kawakami, Y, Fukunaga, T

    45th Annual Convention of American Institute of Ultrasound in Medicine 

    Presentation date: 2001.03

  • 高齢者と青年の筋特性の比較

    川上泰雄, 久保啓太郎, 福永哲夫, 熊谷賢哉, 安部孝  [Invited]

    日本体育学会第51回大会 

    Presentation date: 2000.10

  • 反動動作を伴った足底屈運動中に腱組織の伸張-短縮が生じる

    川上泰雄, 村岡哲郎, 伊藤栄, 金久博昭, 福永哲夫  [Invited]

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • 身体運動における筋腱複合体の動態-関節動作と筋線維動態との相互作用-

    福永哲夫, 川上泰雄, 久保啓太郎

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • 筋形状の実測による大腿四頭筋の固有筋力

    安部孝, 熊谷賢哉, 伊藤雅充, 川上泰雄, 福永哲夫

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • ボート選手の呼吸循環系機能および筋力と2000mローイング・パフォーマンスとの関係

    樋口満, 吉賀千恵, 松下雅雄, 田畑 泉, 岡村弘嗣, 川上泰雄

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • ボート選手のトレッドミルおよびローイング・エルゴメータによる漸増負荷試験に対する呼吸循環系応答

    吉賀千恵, 松下雅雄, 田畑泉, 岡村弘嗣, 川上泰雄, 樋口満

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • 力の発揮様式における違いが腱組織の弾性特性に及ぼす影響-一時的および長期的な変化-

    久保啓太郎, 金久博昭, 川上泰雄, 福永哲夫

    第8回日本運動生理学会/第16回日本バイオメカニクス学会合同大会 

    Presentation date: 2000.07

  • Anthropometric and physiological factors in Japanese female rowers.

    Yoshiga, C, Kawakami, Y, Matushita, M, Tabata, I, Okamura, K, Higuchi, M

    5th Annual Congress of the European College of Sport Science. 

    Presentation date: 2000.07

  • Plasma lipid and lipoprotein profile in male rowers.

    Higuchi, M, Yoshiga, C, Kawakami, Y, Oka, J

    5th Annual Congress of the European College of Sport Science. 

    Presentation date: 2000.07

  • Skill evaluation of rowers using fuzzy modeling.

    Tachibana, K, Furuhashi, T, Shimoda, M, Kawakami, Y, Fukunaga, T

    XVIIIth International Symposium of Biomechanics in Sports 

    Presentation date: 2000.06

  • In vivo muscle-fiber behavior reveal significant contribution of tendon elasticity in stretch-shortening cycle.

    Kawakami, Y, Muraoka, T, Ito, S, Kanehisa, H, Fukunaga, T  [Invited]

    47th American College of Sports Medicine Annual Meeting 

    Presentation date: 2000.05

  • Effects of 20 days of bed rest with and without resistance exercise on size architecture and force production of human skeletal muscles.

    Kawakami, Y, Kubo, K, Akima, H, Suzuki, Y, Gunji, A, Fukunaga, T  [Invited]

    4th symposium of "Inactivity (prolonged bed-rest) Health and Aging" 

    Presentation date: 2000.04

  • 競技の競技力向上を目的とした艇の力学量計測システムの開発

    川上泰雄, 下田学, 福永哲夫  [Invited]

    第12回トレーニング科学研究会 

    Presentation date: 2000.03

  • 筋肉損傷の最新の知見

    川上泰雄  [Invited]

    平成11年度第3回スポーツドクター研修会 

    Presentation date: 2000.02

  • 骨格筋のかたちと力発揮特性

    川上泰雄  [Invited]

    日本体育学会第50回記念大会共催シンポジウム 

    Presentation date: 1999.10

  • ヒト下腿三頭筋の長さ-力関係

    川上泰雄, 村岡慈歩, 福永哲夫  [Invited]

    日本運動生理学会第7回大会 

    Presentation date: 1999.10

  • ローイング・エルゴメータの成績に影響を及ぼす因子

    吉賀千恵, 川上泰雄, 福永哲夫, 武安缶史, 岡村浩嗣, 樋口 満

    日本運動生理学会第7回大会 

    Presentation date: 1999.10

  • 歩行中の筋長・筋線維長変化について-超音波法によるin vivo計測からの知見-

    川上泰雄, 久保啓太郎, 福永哲夫  [Invited]

    日本バイオメカニクス学会特別大会 

    Presentation date: 1999.10

  • 女子大学生の骨強度と形態および体力テスト点との関係

    石田良恵, 小島康昭, 奥山秀雄, 黒川貞生, 杉浦雄策, 川上泰雄, 金久博昭

    日本体育学会第50回記念大会 

    Presentation date: 1999.10

  • 筋肉損傷の最新の知見

    川上泰雄  [Invited]

    平成11年度2回スポーツドクター研修会 

    Presentation date: 1999.10

  • Mechanical properties of muscle-tendon complex in sprinters.

    Fukunaga, T, Kubo, K, Kawakami, Y, Kanehisa, H

    XVIIth Congress of the International Society of Biomechanics 

    Presentation date: 1999.08

  • Observations of in vivo human muscle behavior reveal considerable interaction between muscle fibers and tendon (Invited Lecture).

    Kawakami, Y, Kubo, K, Muraoka, T, Fukunaga, T  [Invited]

    XVIIth Congress of the International Society of Biomechanics 

    Presentation date: 1999.08

  • Changes in voluntary and evoked plantar flexion torque during repetitive maximal isometric contractions.

    Kawakami, Y, Amemiya, K, Kanehisa, H, Ikegawa, S, Fukunaga, T  [Invited]

    XVIIth Congress of the International Society of Biomechanics 

    Presentation date: 1999.08

  • The influence of elastic properties of tendon structures on jump performance.

    Fukunaga, T, Kubo, K, Kawakami, Y

    Canmore Satellite Symposium on Skeletal Muscle Mechanics 

    Presentation date: 1999.08

  • The length-force characteristics of human gastrocnemius and soleus muscles in vivo.

    Kawakami, Y, Fukunaga, T  [Invited]

    Canmore Satellite Symposium on Skeletal Muscle Mechanics 

    Presentation date: 1999.08

  • 関節パフォーマンスと筋腱複合体

    川上泰雄  [Invited]

    日本体育学会東京支部第1回研究会 

    Presentation date: 1999.07

  • Sarcomere shortening during fixed-end contraction of frog semitendinosus muscles.

    Kawakami, Y, Lieber, R. L  [Invited]

    46th American College of Sports Medicine Annual Meeting 

    Presentation date: 1999.06

  • 筋は収縮によってダイナミックにかたちを変える

    川上泰雄, 福永哲夫  [Invited]

    第25回日本医学会総会記念日本体力医学会シンポジウム 

    Presentation date: 1999.03

  • 筋収縮能力および神経系の興奮水準の疲労による変化

    川上泰雄, 金久博昭, 福永哲夫, 池川繁樹  [Invited]

    日本体育学会第49回大会 

    Presentation date: 1998.10

  • RPAによる等尺性収縮中の筋電図の解析

    池川繁樹, 川上泰雄, 久保啓太郎, 福永哲夫

    第49回日本体育学会大会 

    Presentation date: 1998.10

  • 短距離選手における腱の弾性特性

    久保啓太郎, 川上泰雄, 福永哲夫

    第49回日本体育学会大会 

    Presentation date: 1998.10

  • オリンピック選手における上腕三頭筋の筋形状と筋力との関係

    市之瀬慈歩, 金久博昭, 伊藤雅充, 川上泰雄, 福永哲夫

    第49回日本体育学会大会 

    Presentation date: 1998.10

  • 長距離選手における腱の弾性特性

    久保啓太郎, 川上泰雄, 柳谷登志雄, 福永哲夫, 澤木啓祐

    第14回日本バイオメカニクス学会大会 

    Presentation date: 1998.09

  • 発育期児童における腱の弾性特性

    久保啓太郎, 川上泰雄, 金久博昭, 福永哲夫

    第53回日本体力医学会大会 

    Presentation date: 1998.09

  • ヒト歩行時の筋線維(腓腹筋)の収縮動態

    福永哲夫, 久保啓太郎, 川上泰雄

    第53回日本体力医学会大会 

    Presentation date: 1998.09

  • In vivo measurements of human muscle behavior with special reference to tendon compliance.

    Kawakami, Y, Kubo, K, Fukunaga, T  [Invited]

    3rd World Congress of Biomechanics 

    Presentation date: 1998.08

  • In vivo determination of tendon properties of human tibialis anterior by means of ultrasonography.

    Ito, M, Ichinose, Y, Kawakami, Y, Fukashiro, S, Fukunaga, T

    45th American College of Sports Medicine Annual Meeting 

    Presentation date: 1998.06

  • 関節角度と随意最大筋力の関係における男女差

    川上泰雄, 柳谷登志雄, 福永哲夫  [Invited]

    日本体育学会第48回大会 

    Presentation date: 1997.10

  • 大規模集団の肘屈曲の角度-力関係および力-速度関係

    篠原稔, 石井直方, 川上泰雄, 深代千之, 小林寛道, 福永哲夫

    日本体育学会第48回大会 

    Presentation date: 1997.10

  • スクワット運動中の筋束長変化

    久保啓太郎, 川上泰雄, 福永哲夫

    日本体育学会第48回大会 

    Presentation date: 1997.10

  • 超音波法による歩行時の筋線維動態の観察

    福永哲夫, 久保啓太郎, 川上泰雄, 政二慶

    日本体力医学会第52回大会 

    Presentation date: 1997.09

  • 等速性膝伸展中の筋束短縮速度

    市之瀬慈歩, 伊藤雅充, 川上泰雄, 福永哲夫

    日本体力医学会第52回大会 

    Presentation date: 1997.09

  • 生体での外側広筋腱膜の弾性測定の試み

    久保啓太郎, 川上泰雄, 福永哲夫

    日本体力医学会第52回大会 

    Presentation date: 1997.09

  • ベッドレスト中の等速性膝伸展トレーニングの有効性

    船渡和男, 伊藤雅充, 黒川貞生, 下田学, 流田宏, 川上泰雄, 福永哲夫, 鈴木洋児

    日本体力医学会第52回大会 

    Presentation date: 1997.09

  • Changes in muscle-tendon unit during passive stretching in humans.

    Kawakami, Y, Ichinose, Y, Imai, M, Fukunaga, T  [Invited]

    XVIth Congress of the International Society of Biomechanics 

    Presentation date: 1997.08

  • Shortening velocity of muscle fibers is not constant during 'isokinetic' joint action.

    Ichinose, Y, Ito, M, Kawakami, Y, Fukunaga, T

    XVIth Congress of the International Society of Biomechanics 

    Presentation date: 1997.08

  • Trunk extension and flexion torque in athletes.

    Ikegawa, S, Shimoda, M, Nagareda, H, Kubo, K, Okada, J, Kawakami, Y, Funato, K, Fukunaga, T

    XVIth Congress of the International Society of Biomechanics 

    Presentation date: 1997.08

  • In vivo fascicle length changes of the human vastus lateralis muscle during squatting.

    Kubo, K, Kawakami, Y, Fukunaga, T

    XVIth Congress of the International Society of Biomechanics 

    Presentation date: 1997.08

  • In vivo moment arm estimations of human vastus lateralis during contractions.

    Ito, M, Ichinose, Y, Kawakami, Y, Fukunaga, T

    XVIth Congress of the International Society of Biomechanics 

    Presentation date: 1997.08

  • Architecture of contracting human muscles and its functional significance.

    Kawakami, Y  [Invited]

    Satellite symposium of the International Congress of Biomechanics: Specificity and Plasticity of Skeletal Muscle Architecture 

    Presentation date: 1997.08

  • カーフレイズ中の筋束長変化

    久保啓太郎, 川上泰雄, 福永哲夫

    日本運動生理学会第5回大会 

    Presentation date: 1997.07

  • Effects of isokinetic strength training during bed rest on morphological and functional characteristics of skeletal muscle.

    Funato, K, Kawakami, Y, Ito, M, Suzuki, Y, Fukunaga, T

    44th American College of Sports Medicine Annual Meeting 

    Presentation date: 1997

  • Three-dimensional arrangement of fascicles in the human gastrocnemius muscle.

    Ichinose, Y, Kawakami, Y, Fukunaga, T

    44th American College of Sports Medicine Annual Meeting 

    Presentation date: 1997

  • 静的ストレッチング中の筋束長の変化

    川上泰雄, 市之瀬慈歩, 福永哲夫  [Invited]

    第13回日本バイオメカニクス学会大会 

    Presentation date: 1996.11

  • 静的筋活動時でも筋束は短縮する

    市之瀬慈歩, 伊藤雅充, 川上泰雄, 福永哲夫

    第13回日本バイオメカニクス学会大会 

    Presentation date: 1996.11

  • ベッド安静状態(3週間)及び筋力トレーニングが筋の生理学的断面積および固有筋力(断面積あたりの筋力)に及ぼす影響

    久保啓太郎, 川上泰雄, 流田宏, 柳谷登志雄, 鈴木洋児, 福永哲夫

    第13回日本バイオメカニクス学会大会 

    Presentation date: 1996.11

  • 下腿三頭筋の筋束長と筋放電量に及ぼす関節角度の影響

    川上泰雄, 市之瀬慈歩, 福永哲夫  [Invited]

    第51回日本体力医学会大会 

    Presentation date: 1996.09

  • 腓腹筋の筋形状-超音波法による3D再構築-

    市之瀬慈歩, 川上泰雄, 福永哲夫

    第51回日本体力医学会大会 

    Presentation date: 1996.09

  • 静的筋活動時の筋束長・羽状角変化

    伊藤雅充, 市之瀬慈歩, 川上泰雄, 福永哲夫

    第51回日本体力医学会大会 

    Presentation date: 1996.09

  • 相撲選手および長距離ランナーの内臓脂肪量と皮下脂肪分布

    近藤正勝, 倉田順子, 安部孝, 川上泰雄, 福永哲夫

    第51回日本体力医学会大会 

    Presentation date: 1996.09

  • ヒト固有筋力(Specific Tension)に見られる筋群間差異

    福永哲夫, 川上泰雄, 池川繁樹, 岡田純一

    第4回日本運動生理学会 

    Presentation date: 1996.07

  • Effect of knee joint angle on plantarflexor bilateral deficit.

    Kawakami, Y, Sale, D. G, MacDougall, J. D, Moroz, J. S  [Invited]

    43rd American College of Sports Medicine Annual Meeting 

    Presentation date: 1996.05

  • Regional changes in body fat following aerobic exercise training with dietary self-administration.

    Abe, T, Kawakami, Y, Sugita, M, Fukunaga, T

    42nd American College of Sports Medicine Annual Meeting 

    Presentation date: 1996.05

  • In vivo determination of fascicle length and pennation during voluntary contraction of human muscle.

    Fukunaga, T, Ichinose, Y, Ito, M, Kawakami, Y, Fukashiro, S

    42nd American College of Sports Medicine Annual Meeting 

    Presentation date: 1996.05

  • トレーニングがヒト羽状筋の筋線維角度におよぼす影響

    市之瀬慈歩, 安部孝, 村山光義, 川上泰雄, 福永哲夫

    日本体力医学会関東地方会平成8年3月 

    Presentation date: 1996.03

  • Bilateral deficit in plantarflexor muscles during isometric contractions.

    Kawakami, Y, Sale, D. G, MacDougall, J. D, Moroz, J. S  [Invited]

    3rd Meeting of the Canadian Society of Exercise Physiology 

    Presentation date: 1995.10

  • An application of acceleration analysis to evaluation of rowing technique.

    Shimoda, M, Kawakami, Y, Fukunaga, T

    XIII International Symposium of Biomechanics in Sport 

    Presentation date: 1995.07

  • The relationship between fascicle lengths of the triceps surae and ankle and knee joint angles in humans.

    Kawakami, Y, Ichinose, Y, Fukunaga, T  [Invited]

    XVth Congress of the International Society of Biomechanics 

    Presentation date: 1995.07

  • In vivo measurement of fascicle arrangement in human vastus lateralis muscle using ultrasound.

    Ichinose, Y, Ito, M, Kawakami, Y, Fukunaga, T

    XVth Congress of the International Society of Biomechanics 

    Presentation date: 1995.07

  • Force-velocity characteristics of various muscle groups in humans.

    Ikegawa, S, Okada, J, Kawakami, Y, Fukunaga, T

    XVth Congress of the International Society of Biomechanics 

    Presentation date: 1995.07

  • Internal shortening of the tibialis anterior muscle during isometric dorsifleion in human.

    Ito, M, Ichinose, Y, Kawakami, Y, Fukunaga, T

    XVth Congress of the International Society of Biomechanics 

    Presentation date: 1995.07

  • Higher fat accumulation in the lower limbs is associated with favorable serum lipid and lipoprotein profiles.

    Tanaka, F, Abe, T, Kawakami, Y, Fukashiro, S, Ichinose, Y, Fukunaga, T

    42nd American College of Sports Medicine Annual Meeting 

    Presentation date: 1995.05

  • Total and segmental subcutaneous adipose tissue volumes in young women: estimation and verification.

    Abe, T, Tanaka, F, Kawakami, Y, Fukunaga, T

    42nd American College of Sports Medicine Annual Meeting 

    Presentation date: 1995.05

  • ヒト骨格筋における筋組織厚分布の加齢変化

    安部孝, 倉田順子, 近藤正勝, 田中史子, 川上泰雄, 深代千之, 福永哲夫

    日本体力医学会第50回大会 

    Presentation date: 1995

  • 静的筋活動時にみられる筋束長変化-超音波法による定量化の試み-

    市之瀬慈歩, 伊藤雅充, 川上泰雄, 深代千之, 福永哲夫

    日本体力医学会第50回大会 

    Presentation date: 1995

  • 中高齢者における筋力トレーニングが筋の形態と筋電図に及ぼす影響

    松垣紀子, 本間幸子, 川上泰雄, 福永哲夫, 加賀谷淳子

    日本体力医学会第50回大会 

    Presentation date: 1995

  • ヒト除脂肪量の上限と筋組織厚および筋線維走行角

    近藤正勝, 安部孝, 川上泰雄, 市ノ瀬慈歩, 田中史子, 福永哲夫

    日本体力医学会第50回大会 

    Presentation date: 1995

  • 身体不活動にともなう人体筋の構造と機能の変化

    福永哲夫, 船渡和男, 川上泰雄, 久野譜也, 秋間 広

    第41回日本宇宙航空環境医学会総会 

    Presentation date: 1995

  • Knee joint angles and muscle-fiber length of vastus lateralis in humans.

    Kawakami, Y, Fukunaga, T  [Invited]

    40th American College of Sports Medicine Annual Meeting 

    Presentation date: 1994.06

  • Muscle force and cross-sectional area of elbow flexors and extensors in bodybuilders and weightlifters.

    Ikegawa, S, Kawakami, Y, Funato, K, Fukunaga, T

    40th American College of Sports Medicine Annual Meeting 

    Presentation date: 1994.06

  • Upper limit of lean body mass in humans: a study on Japanese sumo wrestlers.

    Abe, T, Kondo, M, Ikegawa, S, Kawakami, Y, Fukunaga, T

    40th American College of Sports Medicine Annual Meeting 

    Presentation date: 1994.06

  • Subcutaneous and visceral fat distribution and daily physical activity: comparison between young and middle-aged women.

    Sakurai, T, Abe, T, Kawakami, Y, Fukunaga, T

    40th American College of Sports Medicine Annual Meeting 

    Presentation date: 1994.06

  • Effect of bed rest on muscle morphology.

    Kawakami, Y, Abe, T, Fukunaga, T  [Invited]

    Asian Sport Sciences Congress Hiroshima '94 

    Presentation date: 1994

  • Residents in Okinawa where longevity is pronounced have smaller percentage of visceral fat than the metropolitan.

    Abe, T, Kondo, M, Kawakami, Y, Fukashiro, S, Sakurai, T, Tanaka, F, Haraikawa, S, Fukunaga, T

    Asian Sport Sciences Congress Hiroshima '94 

    Presentation date: 1994

  • 羽状筋における筋線維配置のマッピングの試み

    川上泰雄, 市之瀬慈歩, 久野譜也, 福永哲夫  [Invited]

    第49回日本体力医学会 

    Presentation date: 1994

  • 筋疲労の回復に及ぼすスポーツマッサージの効果

    池川繁樹, 矢田秀昭, 角田直也, 井上恵子, 安部孝, 船渡和男, 川上泰雄, 松尾彰文, 福永哲夫

    日本体育学会第45回大会 

    Presentation date: 1994

  • ペドメーター1万歩以上は血清HDLコレステロールを改善するか

    安部孝, 川上泰雄, 福永哲夫

    日本体育学会第45回大会 

    Presentation date: 1994

  • 日本人一流ボディビルダーの筋厚分布

    安部孝, 川上泰雄, 石井直方, 福永哲夫, 田中泰博

    第6回トレーニング科学研究会 

    Presentation date: 1994

  • Changes in muscle architecture as a result of resistance training.

    Kawakami, Y, Abe, T, Kuno, S, Fukunaga, T  [Invited]

    XIVth Congress of the International Society of Biomechanics 

    Presentation date: 1993

  • Growth and muscle hypertrophy involve fiber angle enlargement.

    Fukunaga, T, Kawakami, Y, Abe, T

    American College of Sports Medicine Annual Meeting 

    Presentation date: 1993

  • Validity of anthropometrical method for measuring visceral fat mass in young women.

    Abe, T, Kawakami, Y, Fukunaga, T

    American College of Sports Medicine Annual Meeting 

    Presentation date: 1993

  • 女子スポーツ選手と一般女子学生の内蔵脂肪量および皮下脂肪量

    安部孝, 川上泰雄, 杉田正明, 福永哲夫

    日本運動生理学会第1回大会 

    Presentation date: 1993

  • 筋の構造から見た力速度特性

    福永哲夫, 船渡和男, 松尾彰文, 川上泰雄, 矢田秀昭

    日本運動生理学会第1回大会 

    Presentation date: 1993

  • ボデイビルダーとウエイトリフターの肘関節伸展及び屈曲における単位筋断面積あたりの筋力

    池川繁樹, 大橋令子, 田中泰博, 小沢治夫, 船渡和男, 川上泰雄, 石井直方, 福永哲夫

    日本体育学会第44回大会 

    Presentation date: 1993

  • トレーニングに伴う上腕三頭筋の生理学的断面積及び筋線維角度の変化

    川上泰雄, 安部孝, 久野譜也, 福永哲夫  [Invited]

    日本体育学会第44回大会 

    Presentation date: 1993

  • 皮下脂肪の分布パターンに及ぼす環境因子の影響を探る

    安部孝, 近藤正勝, 川上泰雄, 福永哲夫

    日本体育学会第44回大会 

    Presentation date: 1993

  • ウエイトリフターとボデイビルダーにおける筋特性の比較

    大橋令子, 池川繁樹, 近藤正勝, 安部孝, 船渡和男, 川上泰雄, 福永哲夫, 小沢治夫

    第48回日本体力医学会 

    Presentation date: 1993

  • レジスタンストレーニング効果の特異性

    船渡和男, 福永哲夫, 石井直方, 川上泰雄, 杉田正明, 矢田秀昭, 岡田純一, 小沢治夫, 田中泰博

    第48回日本体力医学会 

    Presentation date: 1993

  • 超音波法によるヒト前脛骨筋の移動速度測定

    福永哲夫, 久野譜也, 川上泰雄

    第48回日本体力医学会 

    Presentation date: 1993

  • 筋線維走行角度を考慮した筋力-筋断面積関係

    池川繁樹, 川上泰雄, 福永哲夫

    第48回日本体力医学会 

    Presentation date: 1993

  • 筋横断面積と筋厚,筋線維角度との関係.

    川上泰雄, 安部孝, 福永哲夫, 池川繁樹  [Invited]

    第48回日本体力医学会 

    Presentation date: 1993

  • 運動トレーニングにより内蔵脂肪量は減少する

    安部孝, 板井もりえ, 川上泰雄, 杉田正明, 福永哲夫

    第48回日本体力医学会 

    Presentation date: 1993

  • ヒトにおける除脂肪量の限界を探る

    近藤正勝, 安部孝, 池川繁樹, 川上泰雄, 福永哲夫

    第48回日本体力医学会 

    Presentation date: 1993

  • 肥満女性の減量トレーニングに伴う皮下脂肪量及び内蔵脂肪量の変化

    安部孝, 川上泰雄, 杉田正明, 福永哲夫

    第5回トレーニング科学研究会 

    Presentation date: 1993

  • クラシックバレエダンサーの下肢の筋力特

    久埜真由美, 平野裕一, 宮下充正, 川上泰雄, 福永哲夫

    第5回トレーニング科学研究会 

    Presentation date: 1993

  • 肘関節屈曲・伸展筋群のspecific tension-速度関係

    川上泰雄, 福永哲夫, 中澤公孝  [Invited]

    第11回日本バイオメカニクス学会大会 

    Presentation date: 1992

  • 各種動作姿勢で発揮される力-速度関係

    福永哲夫, 松尾彰文, 船渡和男, 川上泰雄

    第11回日本バイオメカニクス学会大会 

    Presentation date: 1992

  • 中高年齢女子の身体運動パワー出力特性

    福永哲夫, 松尾彰文, 船渡和男, 川上泰雄, 安部孝, 小沢治夫, 合田浩二

    第47回日本体力医学会 

    Presentation date: 1992

  • 一流陸上競技(女子)選手の身体的特性について

    杉田正明, 安部孝, 八田秀雄, 川上泰雄, 原田康弘, 福永哲夫, 小林寛道

    第47回日本体力医学会 

    Presentation date: 1992

  • 超音波断層法をもちいた皮下脂肪量 内蔵脂肪量の推定

    安部孝, 川上泰雄, 八田秀雄, 杉田正明, 福永哲夫

    第47回日本体力医学会 

    Presentation date: 1992

  • 超音波法による筋繊維走行角度推定の試み

    川上泰雄, 安部孝, 福永哲夫  [Invited]

    第47回日本体力医学会 

    Presentation date: 1992

  • フェンシング選手に於ける等速性脚筋力の左右差

    富田智子, 川上泰雄, 安部孝, 福永哲夫, 池川繁樹

    第47回日本体力医学会 

    Presentation date: 1992

  • 骨密度におよぼす筋パワー出力

    福永哲夫, 松尾彰文, 船渡和男, 安部孝, 川上泰雄, 小沢治夫, 合田浩二

    第38回日本宇宙航空環境医学会総会 

    Presentation date: 1992

  • 肘関節屈筋,伸筋のモーメントアームの実測

    川上泰雄, 中沢公考, 福永哲夫  [Invited]

    日本体育学会第43回大会 

    Presentation date: 1992

  • コンセントリック及びエキセントリックトレーニングがヒト骨格筋の力学的特性と形態に与える効果

    石井直方, 川上泰雄, 安部孝, 福永哲夫, 池川繁樹

    日本体育学会第43回大会 

    Presentation date: 1992

  • 超音波法による筋線維の走行角度と移動距離の検討

    福永哲夫, 久野譜也, 川上泰雄

    日本体育学会第43回大会 

    Presentation date: 1992

  • 中高年女性における年齢と筋パワー出力特性

    船渡和男, 松尾彰文, 福永哲夫, 川上泰雄, 小沢治夫, 合田浩二

    日本体育学会第43回大会 

    Presentation date: 1992

  • A study on power output during simulated rowing.

    Nozaki, D, Kawakami, Y, Fukunaga, T, Miyashita, M

    2nd IOC World Congress on Sports Sciences 

    Presentation date: 1991

  • Analysis of musculature in human elbow flexors and extensors using magnetic resonance imaging.

    Kawakami, Y, Nakazawa, K, Fukunaga, T, Miyashita, M  [Invited]

    XIIIth Congress of the International Society of Biomechanics 

    Presentation date: 1991

  • Comparison of electrical activity of synergistic muscles between isometric concentric and eccentric contractions.

    Nakazawa K, Kawakami, Y, Fukunaga, T, Miyashita, M

    XIIIth Congress of the International Society of Biomechanics 

    Presentation date: 1991

  • 各種動作様式で発揮されるパワー出力測定法の開発

    福永哲夫, 松尾彰文, 沼沢秀男, 船渡和男, 川上泰雄

    第32回日本人間工学会 

    Presentation date: 1991

  • 種々の動作様式で発揮されるパワー出力測定方法の開発

    沼沢秀雄, 船渡和男, 松尾彰文, 川上泰雄, 金久博昭, 福永哲夫

    第46回日本体力医学会大会 

    Presentation date: 1991

  • 筋活動様式と筋放電量の関係

    川上泰雄, 福永哲夫  [Invited]

    第46回日本体力医学会大会 

    Presentation date: 1991

  • 肘関節屈筋群の活動様式と活動量

    中沢公孝, 川上泰雄, 福永哲夫, 宮下充正

    第42回日本体育学会大会 

    Presentation date: 1991

  • 膝関節伸展および屈曲における伸張性筋力の特性

    池川繁樹, 川上泰雄, 福永哲夫

    第46回日本体力医学会大会 

    Presentation date: 1991

  • 超音波断層法による皮下脂肪厚分布と身体組成

    近藤正勝, 安部孝, 川上泰雄, 松尾彰文, 福永哲夫

    第46回日本体力医学会大会 

    Presentation date: 1991

  • ローイングエルゴメーター6分漕における発揮パワーの変化

    野崎大地, 川上泰雄, 福永哲夫, 宮下充正

    第46回日本体力医学会大会 

    Presentation date: 1991

  • 足背屈における伸張性筋力の特性

    池川繁樹, 川上泰雄, 福永哲夫

    第42回日本体育学会大会 

    Presentation date: 1991

  • 肘関節屈筋群の活動様式と活動量

    中沢公孝, 川上泰雄, 福永哲夫, 宮下充正

    第42回日本体育学会大会 

    Presentation date: 1991

  • MRI法による肘関節屈筋,伸筋の生理学的筋断面積の測定.

    川上泰雄, 中沢公考, 福永哲夫, 宮下充正  [Invited]

    第42回日本体育学会大会 

    Presentation date: 1991

  • 筋疲労にともなう短縮性,伸張性筋力と筋放電様相の変化

    川上泰雄, 福永哲夫, 宮下充正, 金久博昭, 池川繁樹  [Invited]

    第45回日本体力医学会 

    Presentation date: 1990

  • 短縮性及び伸張性筋力測定に於ける再現性について

    池川繁樹, 川上泰雄, 金久博昭, 福永哲夫

    第45回日本体力医学会 

    Presentation date: 1990

  • 3つの収縮様式における発揮トルクと筋の活動状態

    川上泰雄, 福永哲夫, 宮下充正, 金久博昭  [Invited]

    日本バイオメカニクス学会第10回大会 

    Presentation date: 1990

  • テレメータ法に依る酸素摂取量測定の精度の検討

    福永哲夫, 川上泰雄, 野崎大地, 松尾彰文

    人間工学会関東支部会第20回大会 

    Presentation date: 1990

  • Some factors affecting eccentric contraction strength.

    Kawakami, Y, Fukunaga, T, Kanehisa, H, Miyashita, M  [Invited]

    XIIth Congress of the International Society of Biomechanics 

    Presentation date: 1989

  • 3種類の収縮様式における随意最大筋力の部位別比較

    川上泰雄, 福永哲夫, 金久博昭, 奥山秀雄, 池川繁樹, 宮下充正  [Invited]

    第44回日本体力医学会 

    Presentation date: 1989

  • 伸張性筋力測定の意義

    福永哲夫, 金久博昭, 奥山秀雄, 川上泰雄

    第39回日本体育学会大会 

    Presentation date: 1988

  • 骨格筋メカニクスから考えるストレングストレーニングと外傷・傷害予防

    川上泰雄

    臨床スポーツ医学会 

  • 筋厚と形態計測値の組み合わせによる筋形状指標と肘関節屈曲トルクとの関係

    赤木亮太, 勝亦陽一, 美濃羽弘樹, 川上泰雄, 福永哲夫

    第60回日本体力医学会大会 

  • 野球選手における肘関節トルクのポジション特性

    勝亦陽一, 赤木亮太, 美濃羽弘樹, 川上泰雄, 福永哲夫

    第60回日本体力医学会大会 

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Specific Research

  • 身体能力開発学の構築に向けて

    2021   田中史子

     View Summary

    当該研究課題について2020年度の科研費基盤(S)に申請したが不採択となり、本研究費を活用して2021年度の科研費基盤(S)に申請に向けての準備を行った。研究者間の連絡や基礎的な研究を進め、2020年度秋に申請書の作成、提出に至った。申請者らが確立してきたスポーツ科学・工学・医学研究領域の連携関係を、人間の身体運動のメカニズムの解明や身体運動能力の向上に資する研究に応用するものである。

  • 運動時の肉離れの発生機序に関する研究

    2020   Pavlos Evangelidis, Carmela Mantecon, Huub Maas

     View Summary

    スプリント系の競技種目で頻発する「肉離れ」(muscle&nbsp;strain injury)は、アスリートの競技生命に深刻な影響を及ぼす重篤な傷害である。本研究では、肉離れが多発する大腿後部の筋群(ハムストリングス)の詳細解析と、運動時の形状変化やストレス分布の生体計測を通じて、肉離れの発生機序についての知見を得ることを目的とした。人間の解剖体の当該筋の詳細な形状観察と、生体における安静時の形状の評価(筋束長・羽状角の筋内分布)を3次元超音波法を用いて実施した。また、人間生体について、膝関節屈曲中のハムストリングス各筋のストレス分布を超音波エラストグラフィ法を用いて計測した。

  • 下肢筋群の機能を高める新たな歩行様式の解明:健康寿命延伸に向けて

    2019  

     View Summary

     本研究では、日常で最も頻繁に行う運動である歩行の「トレーニング効果」に着目して、健康の維持・増進を視野に入れた研究を計画し、2019年度はそのための基礎研究を実施した。健常な成人男性と子ども(3〜8歳)を対象として、歩行中の筋活動の計測や3次元動作解析を通して歩行中の骨格筋メカニクスを探るとともに、その成長過程や筋量分布との関連性について検討した。子どもに特徴的な歩行の特徴や発育に伴う変化と、安定した成人歩行との違いについての知見を得ることができ、現在、論文の投稿準備中である。また、下腿三頭筋を構成する腱組織の力学的特性に関する研究を遂行し、腱組織に存在するユニークな振る舞いを解明した。

  • 総括班

    2018   上杉 繁, 鈴木克彦, 田中史子, 山岸卓樹, 永吉俊彦, 戚 维璜, アドゥアヨム アヘゴ アクエテビ

     View Summary

     科学研究費新学術領域(研究領域提案型)の再申請に向けて、国内外の研究グループの連携充実とグループ拡大に向けての準備を行った。メールベースでの情報のやりとりに加えて、実際に顔を合わせて、時間をかけてじっくりと討議をすることによって、これまでの申請(不採択)に磨きをかけた研究計画の策定を行った。結果的に、グループの拡大と研究計画の充実につながる活動を遂行することができた。奏功した進め方として、参画メンバーが顔を合わせる「研究合宿」と、参画メンバーを含むでコンソーシアム活動の相乗効果をあげることができる。残念ながら諸事情により申請に至ることができなかったが、次年度に申請をするための基盤は完成した。

  • 総括班

    2017   上杉 繁, 鈴木克彦, 秋本崇之, 田中史子

     View Summary

     科学研究費新学術領域研究(研究領域提案型)の本年度申請に向けて、スポーツ科学分野、医学分野、歯学分野、理工学分野、そして、様々な業種の企業が連携した研究グループの立ち上げと申請のための準備を行ってきた。対面やWeb会議システムを活用して、研究打ち合わせを円滑に行うための環境の構築を行い、学内学外の研究参画者との打ち合わせを実施し、研究計画の立案を進めた。 研究計画では新興・融合領域『身体能力開発学』の創成を目指し、短期(練習など)・中期(発育など)・長期(年代など)的変化という時間軸、解剖生理学的(筋骨格系など)、身体(全身動作など)、集団(学校など)サイズという空間軸の切り口で新興・融合研究を推進し、新学術領域として体系化する計画である。立案した研究計画をもとに2018年度科研費新学術領域研究(研究領域提案型)に申請を行い、現在は審査結果の開示を待っているところである。 また、申請をした研究計画に関係する準備的な研究として、アスリートの分析、自転車やランニング等の動作制御などに関する研究を進めた。さらに学会での視察・研究発表や国内・海外研究者との意見交換を行い、情報収集を行った。

  • 骨格筋・腱特性の加齢変化とトレーニング効果:ロコモティブシンドロームの予防・改善

    2015   稲見崇孝, 齋藤輝, 福田渉

     View Summary

    The aims of our studies were to investigate the physical properties, association of muscle-tendon unit and physical activity functions, and their individual variations in elderly populations. To establish the methodology of the present study, we have performed the fundamental experiments on young populations focusing on the skeletal muscle hardness-length relationship and the functional roles of fascia by muscle contraction. Furthermore, the shoe insole possessing high bending stiffness was designed in order to improve the locomotive abilities. In addition, we performed a cross-sectional study on 210 participants of different ages to investigate the association between skeletal muscle properties and physical functions in relation to aging. A significant correlation between maximal walking speed and leg extension power was observed. It was concluded that for the improvement of locomotive abilities, leg extension power is important for the elderly. We are planning to reveal the relationship between skeletal muscle mass and locomotion abilities of elderly populations.

  • 骨格筋・腱特性の加齢変化とトレーニング効果:ロコモティブシンドロームの予防・改善

    2015   稲見崇孝, 吉川亜有美

     View Summary

    受動的な関節角度変化に伴って筋硬度が顕著に上昇する筋を同定し、関節の可動域を規定する因子を特定した。次に、全身麻酔および筋弛緩剤の投与は足関節可動域を変化させず、意識の有無は足関節可動性に影響しないことが明らかとなった。さらに、中・高齢 者向けの簡便なトレーニング方法の開発に向けて、中高齢者を対象に横断調査を行い、骨格筋の形態や機能と身体運動機能との関連性を評価した。今後、中高齢者における骨格筋の筋量や機能と身体運動機能との関連性を明らかにする予定である。

  • ウォーミングアップが筋腱複合体に及ぼす影響

    2003  

     View Summary

     本運動前の「ウォーミングアップ」について、ストレッチングの効果に関する以下の実験を行った。1)筋腱複合体の解剖学的特徴の確認。関係機関の協力を仰ぎ、ヒト屍体の下腿三頭筋の筋束配置および腱組織配置を解剖観察した。下腿三頭筋を構成する腓腹筋およびヒラメ筋は筋腹部で弱く結合しており、異なる腱組織を有していたが、アキレス腱部分で腱線維を共有した構造をとることが明らかになった。これらの知見から、ストレッチングによる下腿三頭筋伸長時にアキレス腱は1構造単位として伸長されること、筋腹部の伸長度は伸長の程度によって異なる可能性が示唆された。2)下腿三頭筋のストレッチングによる急性変化。健常な男女大学生を被験者として以下の実験を行った。被験者は座位(膝関節は完全伸展位)をとり、足部を筋力計のフットプレートに固定した。フットプレートは等速で底屈位を始点として足背屈方向に回転し、一定の受動トルクが生じたときに回転を停止、その時の足関節角度を計測した。被験者は筋をリラックスさせ、能動的なトルクが生じないように配慮した。足関節背屈角度が一定になった後にモーターを停止して、足関節を初期位置に戻し、再びモーターのスイッチを入れて同じことを繰り返す、というようにして計10回の測定を行った。超音波装置を用いて背屈動作時の筋腱移行部の動きを計測し、筋線維およびアキレス腱(腓腹筋の外部腱)の伸長をそれぞれ求めた。10回の試行中に徐々に足背屈角度が増加した。このとき、筋線維伸長は4回目までは有意に増加したが、それ以降は増加が頭打ちとなった。一方、アキレス腱伸長は後半に有意に増加した。この結果は、(ダイナミックな)ストレッチングはその回数や負荷を工夫することによって筋線維と腱組織双方の伸展性を高める効果を及ぼし得ることを示唆する。現在、持続的な伸長負荷(静的ストレッチング)が下腿三頭筋の筋腱複合体に及ぼす効果に関する実験を進めている。

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Overseas Activities

  • 骨格筋の形態的・機能的・質的特性と身体運動パフォーマンスの関連性

    2019.06
    -
    2020.06

    オランダ   フリー大学アムステルダム校

  • 骨格筋の張力伝達機構に関する研究

    2008.09
    -
    2009.08

    オランダ   フリー大学

 

Syllabus

▼display all

 

Committee Memberships

  • 2014.11
    -
    Now

    Nishitokyo City, Tokyo  Health Support Team

  • 2012
    -
    Now

    Science Council of Japan  Section II: Life Sciences

  • 2011
    -
    Now

    Science Council in Japan  Cooperative Member

  • 2011
    -
    Now

    Japanese Society of Physical Fitness and Sports Medicine  Councilor

  • 2011
    -
    Now

    Japanese Society of Bone and Muscle Ultrasound  Vice President (2011-2013), Advisory Board Member, Council Member

  • 2010.10
    -
    Now

    YAMAHA Motor Foundation for Sports  Judging Committee Member

  • 2008
    -
    Now

    Japan Society of Golf Sciences  Council Member, Editor, Member of Scientific Studies

  • 2003.12
    -
    Now

    Japan Society for the Promotion of Science  Kakenhi Reviewing Board Member

  • 2001
    -
    Now

    Japan Society of Physical Education, Health and Sport Sciences  District Representative

  • 2001
    -
    Now

    Japanese Society of Biomechanics  Coucil Member

  • 2000
    -
    2016

    Japanese Society of Training Science for Exercise and Sport  Council Member

  • 2014
    -
    2015

    Japan Institute of Sport Science  Advisory Board Member, Scientific Research Division

  • 2014
    -
    2015

    Panasonic Corporation  Research Advisor

  • 2011
    -
    2015

    Japanese Society of Physical Fitness and Sports Medicine  Committee Membe of Future Plans

  • 2011
    -
    2015

    Japanese Society of Physical Fitness and Sports Medicine  Editorial Board Member

  • 2011.04
    -
    2013.03

    Japan Society of Physical Education, Health and Sport Sciences  Council Member

▼display all

Social Activities

  • 雑誌

    小学館  女性セブン 

    2022.04
    -
     

     View Summary

    女性セブン「草笛光子「88才のガチ筋トレ」ってすごいけどちょっと怖い」の取材協力

  • WEB

    アミノ酸スポーツ栄養科学ラボ 

    2021.09
    -
     

     View Summary

    『関節・腱コンディショニング向け6種アミノ酸ミックス』は、関節・腱のコンディションを保ち、「理想の動き」を支える!

  • WEB

    アミノ酸スポーツ栄養科学ラボ 

    2021.09
    -
     

     View Summary

    体を動かす「立役者」:筋肉の力を動きに変える「関節」と、力を伝える「腱」が、「理想の動き」を支える!

  • WEB

    FNNプライムオンライン 

    2021.09
    -
     

     View Summary

    「25歳を過ぎたら急に体力が衰えた」説…20台で低下する“免疫力”が関係?原因と予防法を専門家に聞いた

  • 監修

    NHK・日本科学未来館  特別企画「超人たちの人体」:最先端の科学研究からアスリートたちの人体の秘密に迫る 

    2021.07
    -
    2021.09

     View Summary

    ウサイン・ボルト(ジャマイカ・陸上)やタチアナ・マクファーデン(アメリカ・パラ陸上)、ケレブ・ドレセル(アメリカ・競泳)といったトップアスリートたちの体内の可視化を通して、超人たちの卓越したパフォーマンスと肉体美、その裏に隠された驚きの身体的特徴を体感。筋力、ジャンプ力の測定や、競技用車いすを使った100メートル走行疑似体験など。また、連動企画として、2021年7月22日(木)~8月8日(日)、早稲田大学 スポーツ科学学術院 川上泰雄研究室とともに、市民参加型の公開研究プロジェクト「発見!きみたちのからだ」を開催。運動能力の基礎がつくられる3歳~12歳の子どもを対象に、研究機器を使って精密に身体・体力を測定。参加者の体に眠る可能性を探りながら、データを次世代の運動能力開発に生かすことを目指す。

  • 雑誌

    小学館  女性セブン 

    2021.07
    -
     

     View Summary

    橋田壽賀子さんが実践した「若返りトレーニング」

  • WEB

    ハレバレ 

    2020.10
    -
     

     View Summary

    ハレバレに記事掲載。「イチから学ぶ、筋肉痛のメカニズム」

  • WEB

    早稲田大学高等研究所ウェビナー 

    2020.08
    -
     

     View Summary

    身体教育医学研究所20周年記念イベントにて講演。 「筋肉研究第一人者とトップアスリートによるみんなのための『筋肉』の話」

  • WEB

    早稲田大学高等研究所ウェビナー 

    2020.08
    -
     

     View Summary

    早稲田大学高等研究所ウェビナーにて講演。「色とパズルでバランスのよい食事を簡単に」

  • WEB

    早稲田大学トップニュース 

    2020.06
    -
     

     View Summary

    早稲田大学トップニュースに記事掲載。「ポストコロナ時代におけるスポーツの価値」

  • 雑誌

    MAGAZIN HOUSE MOOK 

    2020.01
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    MAGAZIN HOUSE MOOKに記事掲載。偉人達の健康診断「信長に続け!足から始める健康ライフ。」

  • 雑誌

    VOGUE JAPAN 

    2019.09
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    VOGUE JAPANに記事掲載。「大人の筋肉ケア」

  • 雑誌

    早稲田大学出版部 

    2019.06
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    「歴史館でたどる早稲田大学」 活躍する研究者として紹介。

  • WEB

    SANSPO.COM Cyclist 

    2018.12
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    SANSPO.COM Cyclistに記事掲載。 「フィッティングでパフォーマンスは向上するのか 小橋勇利さんが早稲田大学川上研究室と検証」

  • 雑誌

    ヘルシスト 

    2018.11
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    ヘルシスト 取材。 「スマホアプリ」で健康管理 「医療・健康アプリ開発の現在」

  • 学報

    Campus Now 

    2018.11
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    Campus Now(早稲田大学学報)取材。 「人体の動作の仕組みを解明し、最適な体づくりを追及する」

  • 雑誌

    NHKガッテン! 

    2018.08
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    NHKガッテン! 「がんばらないで健康長寿に!最高のラク効く体操 『大また歩きで血糖値ダウン』」にて実験データ提供。

  • テレビ番組

    NHK  あしたも晴れ!人生レシピ 

    2018.02
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     View Summary

    NHK Eテレ 「あしたも晴れ!人生レシピ」 取材協力

  • シンポジウム

    SIP 次世代農林水産業創造技術 公開シンポジウム 

    2017.11
    -
     

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    『得られた成果とさらなる発展に向けて』 高齢者の身体能力に及ぼす運動×機能性食品の相乗効果:時間栄養学・運動学の観点から

  • WEB

    medicatessen.com 

    2017.09
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     View Summary

    medicatessen.comに記事掲載。 「アプリユーザーのみならず医療者にもメリット。『メタボウォッチ』」

  • WEB

    健康自慢.com 

    2017.08
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     View Summary

    健康自慢.comに記事掲載。 「早稲田大学、iPhoneアプリ『メタボウォッチ』を開発」

  • WEB

    メディカルアプリナビ 

    2017.08
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     View Summary

    メディカルアプリナビに記事掲載。 「iPhoneでメタボをチェック!早稲田大学が開発したメタボリックシンドローム臨床研究アプリ『メタボウォッチ』」

  • WEB

    エイジングスタイル 

    2017.08
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     View Summary

    エイジングスタイルに記事掲載。 「健康管理と大規模研究をアプリで両立 早大、iPhoneアプリ『メタボウォッチ』公開」

  • WEB

    ライブドアニュース/アメーバニュース 

    2017.08
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     View Summary

    ライブドアニュース/アメーバニュースに記事掲載。 「健康管理と大規模研究をアプリで両立 早大、iPhoneアプリ『メタボウォッチ』公開」

  • WEB

    WEBマガジン・EMIRA 

    2017.07
    -
     

     View Summary

    WEBマガジン・EMIRAに記事掲載。 「SIP『時間栄養・運動レシピ開発』プロジェクトの成果の一部を紹介.。幼児期に運動することが老後の幸福度を決めるワケ - エネルギー - 効率の悪い人間が長生きするために必要なこと-」

  • WEB

    PBWebニュース 

    2017.07
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     View Summary

    PBWebニュースに記事掲載。 「ResearchKitに対応した、メタボリックシンドローム予防・改善のためのiPhoneアプリ『メタボウォッチ』」

  • WEB

    Itmediaヘルスケア 

    2017.07
    -
     

     View Summary

    Itmediaヘルスケアに記事掲載。 「早稲田大学、メタボリックシンドローム調査アプリ『メタボウォッチ』を開発」

  • WEB

    日系デジタルヘルス 

    2017.07
    -
     

     View Summary

    日経デジタルヘルスに記事掲載。 「ResearchKitで『メタボウォッチ』、臨床研究始まる 早稲田大学、生活習慣と身体の形態の相関を明かす」

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    日刊ゲンダイ 

    2017.07
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     View Summary

    日刊ゲンダイに記事掲載。 「アプリで健康になれるのか 開発は早稲田大学 『メタボウォッチ』が健康をアドバイス」

  • シンポジウム

    早稲田大学重点領域研究 「食・農で日本を健康にする」 

    2017.03
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     View Summary

    「スマホアプリ『メタボウォッチ』」:時間栄養・運動学的観点から成人男女の生活習慣と体型の関連性を探る」

  • WEB

    Campus Now 

    2016.11
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     View Summary

    Campus Nowに記事掲載。 https://www.waseda.jp/top/assets/uploads/2016/11/ campus-now_221.pdf「Special Report 躍動のリオデジャネイロ 平昌、そして東京へ -選手を支えた早稲田のスタッフ、関連研究の紹介『バイオメカニクスの観点からパフォーマンスの向上を目指す」

  • 雑誌

    Mac Fan 

    2016.11
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     View Summary

    Mac Fanに記事掲載。 「医療とApple: iOSアプリで探る、日本人の体型と生活習慣の関係」

  • テレビ番組取材

    NHK  団塊スタイル 親の健康 

    2016.10
    -
     

     View Summary

    NHK Eテレ 団塊スタイル 親の健康 (SIP「時間栄養・運動レシピ開発」プロジェクトの成果の一部を説明し、中高齢者が簡単にできる運動を紹介する)

  • 新聞

    日本経済新聞 

    2016.08
    -
     

     View Summary

    日経ヘルスにてコメント。「食べ方の曲がり角は基礎代謝の低下と腸の衰えから」

  • ラジオ

    J-WAVE  Mornig Insight 

    2016.08
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     View Summary

    FMラジオ局J-WAVEの番組「Morning Insight」に出演。「科学でメダルを獲れるのか」についてコメント。

  • 学報

    早稲田大学学報 

    2016.08
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     View Summary

    早稲田大学学報に記事掲載。 「研究者の挑戦『研究者の挑戦 栄養・運動・美容を軸に、健康的なエイジングを実現するためのプロジェクトを推進』」

  • 新聞

    日本経済新聞 

    2016.08
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     View Summary

    日本経済新聞・朝刊 に記事掲載。 「メタボ評価アプリ(早稲田大) 運動や食事との相関調査」

  • テレビ番組

    NHK  超人たちのパラリンピック 

    2016.06
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     View Summary

    NHK BS1 「超人たちのパラリンピック」に出演。

  • WEB

    Feature 

    2016.01
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     View Summary

    特集 「Feature」に記事掲載。 【URL】 https://www.waseda.jp/top/news/35793 「科学でメダルは獲れるのか!? 2020年東京オリンピックに科学で挑む!(第4回)バイオメカニクス研究で、『元気な社会』を実現する」

  • 雑誌

    Tarzan 

    2015.11
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     View Summary

    Tarzan 「下りで筋力UP!山の筋肉痛は下りが原因、とはよく聞く話。その実態を理解して、カラダ作りに応用しよう!」にて企画協力。

  • 雑誌

    ゴルフトゥデイ 

    2015.06
    -
     

     View Summary

    ゴルフトゥデイ 「わかるようでわからなかった股関節に乗ったトップをマスターする!早稲田大学×ゴルフトゥデイがスイングを徹底研究!」にて企画協力。

  • 雑誌

    日経ヘルス 

    2015.06
    -
     

     View Summary

    日経ヘルスにてコメント。「食べ方の曲がり角は基礎代謝の低下と腸の衰えから」

  • 雑誌

    ゴルフトゥデイ 

    2015.04
    -
     

     View Summary

    ゴルフトゥデイ 「プロのスイング プロはダウンで”瞬間加重”していた!! 早稲田大学×ゴルフトゥデイ スイングを徹底研究しました!」にて企画協力

  • 新聞

    キン肉マン新聞 

    2015.03
    -
     

     View Summary

    キン肉マン新聞 「火事場のクソ力は実際に存在する」にて企画協力、コメント。

  • 雑誌

    健康づくり 

    2015.01
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     View Summary

    健康づくり 健康づくりQ&A 「『老化は足から』というのは本当ですか。」にて回答。

  • 雑誌

    健康づくり 

    2014.07
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     View Summary

    健康づくり 「骨格筋のバイオメカニクス」記事提供。

  • 新聞

    朝日新聞 

    2014.05
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     View Summary

    朝日新聞 「体を柔らかくするには?ストレッチも筋トレも大事なの」 取材協力。

  • 社会貢献

    西東京市 

    2014
    -
     

     View Summary

    西東京市オリジナル健康体操の作成。西東京市健康応援副団長に任命。

  • 雑誌

    ためしてガッテン 

    2014
    -
     

     View Summary

    NHKためしてガッテン 「『脳力』アップ 簡単スゴ技スペシャル 大またで歩くだけでさらに効果がアップ!」にて実験協力。

  • 雑誌

    ためしてガッテン 

    2014
    -
     

     View Summary

    NHKためしてガッテン 「血糖値が下がりやすい体になる」記事提供

  • テレビ番組

    TBS  アノ有名人のカラダを最新科学で大解剖SP 

    2013.09
    -
     

     View Summary

    TBS 「アノ有名人のカラダを最新科学で大解剖SP」 番組企画協力・出演。

  • 雑誌

    アスキー 

    2013
    -
     

     View Summary

    週刊アスキー 「テクノロジーが人間を解き明かす スーパーデジタル・ラボ Vol.7 生体計測から見えるもの」にてインタビューに答える。

  • 雑誌

    ためしてガッテン 

    2013
    -
     

     View Summary

    NHKためしてガッテン 「高血糖に!大また歩きウォーキング」にて実験協力。

  • 雑誌

    ジャパンフィットネス 

    2013.01
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     View Summary

    月刊ジャパンフィットネス 「反動動作とバネとしての筋腱複合体」 監修協力。

  • 新聞

    産経新聞 

    2012.08
    -
     

     View Summary

    産経新聞 スポーツ欄「ウサイン・ボルト 夢の9秒4台は可能か」でコメント

  • テレビ番組

    NHK  「ミラクル・ボディ」シリーズ第3弾(1)ウサイン・ボルト「人類最速の秘密」 

    2012.07
    -
     

     View Summary

    NHK特集「ミラクル・ボディ」シリーズ第3弾(1)ウサイン・ボルト「人類最速の秘密」番組企画協力・出演

  • 雑誌

    リケジョ 

    2012.07
    -
     

     View Summary

    リケジョ 「一流アスリートの超人的なヒミツ」 企画協力。

  • 新聞

    日本経済新聞 

    2012.04
    -
     

     View Summary

    日本経済新聞 健康欄「スローピングで体力づくり」でコメント

  • テレビ番組

    NHK  石井竜也のショータイム 

    2012.01
    -
     

     View Summary

    NHK BS-プレミアム「石井竜也のショータイム」の番組企画・取材協力

  • ラジオ

    J-WAVE  kiss and hug 

    2011.05
    -
     

     View Summary

    FMラジオ局J-WAVEの番組「kiss and hug」において「火事場の馬鹿力」について電話インタビュー

  • 講師

    西東京市  しゃきしゃき体操 

    2011.04
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     View Summary

    しゃきしゃき体操リーダー養成講座

  • 講師

    健康・体力づくり事業財団  貯筋運動指導者養成講習会 

    2010.08
    -
     

     View Summary

    貯筋運動指導者養成講習会にて、高齢者の健康増進について講義。

  • 雑誌

    pen 

    2010
    -
     

     View Summary

    pen 「カラダの基本、筋肉と脂肪の関係を知る。」 企画協力、データ提供。

  • テレビ番組

    NHK  「ミラクル・ボディ」シリーズ第1弾(1)アサファ・パウエル 

    2008.03
    -
     

     View Summary

    NHK特集「ミラクル・ボディ」シリーズ第1弾(1)アサファ・パウエル 番組企画協力・出演

  • ラジオ

    RKB毎日放送  スタミナラジオ 

    2008.02
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     View Summary

    RKB毎日放送「スタミナラジオ」にて「火事場の馬鹿力」について電話インタビュー

  • テレビ番組

    テレビ東京  所さんの学校では教えてくれないそこんトコロ 

    2008.01
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     View Summary

    テレビ東京「所さんの学校では教えてくれないそこんトコロ」にて「火事場の馬鹿力」に関するコメントを提供

  • テレビ番組

    サイエンスチャンネル  アスリート解体新書(23ハンドボール) 

    2007.05
    -
     

     View Summary

    (独)科学技術振興機構 サイエンスチャンネル「アスリート解体新書(23ハンドボール)」にて一流ハンドボール選手の動作分析結果を紹介

  • 新聞

    日刊スポーツ 

    2007.05
    -
     

     View Summary

    日刊スポーツ 「筋肉の中身は、どうなっている? 露出増の季節 体を知って準備しよう①」 取材協力。

  • 新聞

    日刊スポーツ 

    2007.05
    -
     

     View Summary

    日刊スポーツ 「伝授!!トレーニングの基礎知識 露出増の季節 体を知って準備しよう②」 取材協力

  • テレビ番組

    NHK  科学大好き土よう塾 

    2007.04
    -
     

     View Summary

    NHK教育 「科学大好き土よう塾」に出演。

  • テレビ番組

    NHK  科学大好き土よう塾 

    2007.04
    -
     

     View Summary

    NHKモバイル放送「科学大好き土よう塾」にて運動選手の骨格筋量測定結果を紹介

  • テレビ番組

    サイエンスチャンネル  「アスリート解体新書(20卓球) 

    2007.04
    -
     

     View Summary

    (独)科学技術振興機構 サイエンスチャンネル「アスリート解体新書(20卓球)」にて一流卓球選手の動作分析結果を紹介

  • テレビ番組

    NHK  科学大好き土よう塾 

    2007.04
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     View Summary

    NHK教育 「科学大好き土よう塾」に出演。

  • 雑誌

    ゴルフトゥデイ 

    2004
    -
     

     View Summary

    ゴルフトゥデイ 「わかったぞ!飛ばしの筋肉の使い方」にて企画協力。

  • 雑誌

    ゴルフダイジェスト 

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    ゴルフダイジェストに記事掲載。アプリでコンディショニング「まずは自分の体の状態を把握しておこう」

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