MIYASHITA, Masashi

写真a

Affiliation

Faculty of Sport Sciences, School of Sport and Sciences

Job title

Professor
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Concurrent Post 【 display / non-display 】

  • Faculty of Sport Sciences   Graduate School of Sport Sciences

  • Affiliated organization   Global Education Center

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Education 【 display / non-display 】

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    2006.12

    Loughborough University   School of Sport and Exercise Sciences  

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    2002.12

    Loughborough University   School of Sport and Exercise Sciences  

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    2001.07

    Loughborough University   Department of Physical Education, Sports Science and Recreation Managemen  

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Degree 【 display / non-display 】

  • Loughborough University   Ph.D.

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Research Experience 【 display / non-display 】

  • 2016.04
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    Waseda University   Faculty of Sport Sciences   Associate Professor

  • 2012.04
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    2016.03

    Tokyo Gakugei University   Department of Health and Sports Sciences   Associate Professor

  • 2009.10
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    2012.03

    Waseda University   Faculty of Sport Sciences   Assistant Professor

  • 2006.10
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    2009.09

    University of Tsukuba   Graduate School of Comprehensive Human Sciences   Research Fellow

  • 2006.10
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    2009.09

    University of Tsukuba   Graduate School of Comprehensive Human Sciences   Research Fellow

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Professional Memberships 【 display / non-display 】

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    Japanese Association of School Health

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    Korean Society of Exercise Physiology

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    Japan Society for Mastication Science and Health Promotion

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    Japan Society of Human Growth and Development

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    Japan Sports Nutrition Association

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Research Areas 【 display / non-display 】

  • Nutrition science and health science

  • Sports sciences

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Research Interests 【 display / non-display 】

  • Recovery

  • Conditioning

  • Functional foods

  • Exercise performance

  • Appetite-regulating hormones

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Papers 【 display / non-display 】

  • Energy replacement diminishes the postprandial triglyceride-lowering effect from accumulated walking in older women

    Miyashita M, Hamada Y, Fujihira K, Nagayama C, Takahashi M, Burns SF, Thackray AE, Stensel DJ

    European Journal of Nutrition   59   2261 - 2270  2020.01  [Refereed]

  • Gum chewing while walking increases fat oxidation and energy expenditure

    Kanno S, Shimo K, Ando T, Hamada Y, Miyashita M, Osawa, K

    Journal of Physical Therapy Science   31   435 - 439  2019.04  [Refereed]

  • Effects of increased daily physical activity on mental health and depression biomarkers in postmenopausal women

    Takahashi M, Lim PL, Tsubosaka M, Kim H-Y, Miyashita M, Suzuki K, Tan EL, Shibata S

    Journal of Physical Therapy Science   31   408 - 413  2019.04  [Refereed]

  • The effects of isomaltulose ingestion on gastric parameters and cycling performance in young men

    Miyashita M, Hamada Y, Fujihira K, Namura S, Sakazaki M, Miyasaka K, Nagai Y

    Journal of Exercise Science and Fitness   17   101 - 107  2019.01  [Refereed]

  • The effects of water temperature on gastric motility and energy intake in healthy young men

    Fujihira K, Hamada Y, Yanaoka T, Yamamoto R, Suzuki K, Miyashita M

    European Journal of Nutrition    2019.01  [Refereed]

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Books and Other Publications 【 display / non-display 】

  • Physical activity in the prevention of atherosclerosis: focus on oxidative stress and oxidised low-density lipoprotein(分担執筆)

    Springer Japan, Tokyo  2015.04

  • メディカルフィットネス研究会（編集）：メディカルフィットネスQ&A.(分担執筆)

    2014.01 ISBN: 9784789468602

  • 公益社団法人日本プロボウリング協会（監修）：健幸華齢ボウリングQ&A.(分担執筆)

    株式会社社会保険研究所（東京）  2014.01

  • エクササイズ科学：健康体力つくりと疾病・介護予防のための基礎と実践（田中喜代次・田端泉 編）(分担執筆)

    文光堂（東京）  2012.02 ISBN: 9784830651779

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Misc 【 display / non-display 】

  • High-Intensity Interval Exercise and Postprandial Triacylglycerol

    Stephen F. Burns, Masashi Miyashita, David J. Stensel

    SPORTS MEDICINE   45 ( 7 ) 957 - 968  2015.07

    Book review, literature introduction, etc.  

    　View Summary

    This review examined if high-intensity interval exercise (HIIE) reduces postprandial triacylglycerol (TAG) levels. Fifteen studies were identified, in which the effect of interval exercise conducted at an intensity of >65 % of maximal oxygen uptake was evaluated on postprandial TAG levels. Analysis was divided between studies that included supramaximal exercise and those that included submaximal interval exercise. Ten studies examined the effect of a single session of low-volume HIIE including supramaximal sprints on postprandial TAG. Seven of these studies noted reductions in the postprandial total TAG area under the curve the morning after exercise of between similar to 10 and 21 % compared with rest, but three investigations found no significant difference in TAG levels. Variations in the HIIE protocol used, inter-individual variation or insufficient time post-exercise for an increase in lipoprotein lipase activity are proposed reasons for the divergent results among studies. Five studies examined the effect of high-volume submaximal interval exercise on postprandial TAG. Four of these studies were characterised by high exercise energy expenditure and effectively attenuated total postprandial TAG levels by similar to 15-30 %, but one study with a lower energy expenditure found no effect on TAG. The evidence suggests that supramaximal HIIE can induce large reductions in postprandial TAG levels but findings are inconsistent. Submaximal interval exercise offers no TAG metabolic or time advantage over continuous aerobic exercise but could be appealing in nature to some individuals. Future research should examine if submaximal interval exercise can reduce TAG levels in line with more realistic and achievable exercise durations of 30 min per day.

    DOI

  • 一過性のガム咀嚼・高強度運動が食欲関連ホルモン及びエネルギー摂取量に及ぼす影響

    柏原杏子, 城所哲宏, 柳岡拓磨, 宮下政司

    日本咀嚼学会雑誌   印刷中   -  2015.05

  • Effects of breaking sitting by standing and acute exercise on postprandial oxidative stress

    Takahashi, Masaki, Miyashita, Masashi, Park, Jong Hwan, Sakamoto, Shizuo, Suzuki, Katsuhiko

    Asian Journal of Sports Medicine   6 ( 3 ) -  2015.01  [Refereed]

    　View Summary

    © 2015, Sports Medicine Research Center.Background: Sedentary behavior, which includes sitting and TV viewing, has been identified as an independent risk factor for type 2 diabetes and cardiovascular disease. Breaking sedentary behavior improves metabolic health such as postprandial glycaemia and insulinemia. However, the mechanisms underlying this effect are unclear. Objectives: Here, we examined whether breaking sitting by standing and acute exercise reduces postprandial oxidative stress. Patient and Methods: Fifteen participants performed 3 trials (sitting, standing, and exercise), each lasting 2 days, in a randomised order. On day one of sitting trial, participants sat in a chair. For the standing trial, the participants stood 6 times, for a 45-minute period each time. For the exercise trial, the participants walked or ran at approximately 60% of age-predicted maximum heart rate for 30 minutes. On day two of each trial, participants rested and consumed the standardised breakfast and lunch. Blood samples were collected in the morning and afternoon on day one, and fasting and at 2, 4, and 6 hours postprandially on day two. Results: The concentrations of serum derivatives of reactive oxygen metabolites (d-ROMs) measured at 4 hours (P = 0.064) and 6 hours (P = 0.071) tended to be higher than that in the fasting state in the sitting trial, but not standing and exercise trial (two-factor analysis of variance (ANOVA), trial × time interaction, P = 0.006). Conclusions: Our results indicate the importance of reducing sitting time for improving postprandial oxidative stress status.

    DOI

  • 異なるアクティブリカバリー方法がサッカー審判員の血中乳酸濃度に及ぼす影響

    柳岡拓磨, 宮下政司, 瀧井敏郎

    トレーニング科学   印刷中   -  2015

  • Comment on Bazzano

    Burns SF, Miyashita M

    Annals of Internal Medicine   162   391 -  2015

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Works 【 display / non-display 】

  • 【外部研究費】産学連携共同研究（民間企業1社）

    2014.10
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  • 【競争的外部研究費】研究代表者：宮下政司 2014年度 科学研究費補助金 若手研究（B）(1,690,000円)「高齢者における食後中性脂肪に対する身体活動の役割：実験室から日常生活への展開」

    2014.04
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  • 【競争的外部研究費（共同研究者）】高橋将記、宮下政司、荒尾孝、内田直、稲山貴代．公益財団法人パブリックヘルスリサーチセンター 2014年度パブリックヘルス科学研究助成金（1,000,000円）「身体不活動が高齢者のメンタルヘルスに及ぼす影響：うつ病バイオマーカーを用いた検討」

    2014.03
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  • 【競争的外部研究費】宮下政司（研究代表者：宮下政司）公益財団法人ロッテ財団、平成25年度奨励研究助成（3,000,000円）「運動と食欲に関する研究」

    2013.12
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  • 【公募型内部研究費】研究代表者：宮下政司 2013年度トップマネジメント経費 東京学芸大学 (4,066,000円)「スポーツ科学系の教育環境設備」

    2013.07
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Awards 【 display / non-display 】

  • 2018 WASEDA RESEARCH AWARD（High-Impact Publication）

    2019.02   Ｗａｓｅｄａ Ｕｎｉｖｅｒｓｉｔｙ  

    Winner： Msashi Miyashita

  • Best Paper Award (Oral Presentation)

    2018.08   2018 The Society of Chinese Scholars on Exercise Physiology and Fitness & 2018 The Society of Taiwan Scholars on Exercise Physiology and Fitness   The effects of masticatory frequency on appetite and energy metabolism assessed by 13C-labelling technique in healthy young men

    Winner： Hamada Y, Yanaoka T, Kashiwabara K, Yamamoto R, Suzuki K, Miyashita M

  • The 31st Japanese Society of Physical Fitness and Sports Medicine, Young Investigator Award

    2018.08   Japanese Society of Physical Fitness and Sports Medicine   The associations between physical fitness and body fatness in blood lipid profile in Japanese children and adolescents

    Winner： Kidokoro T, Edamoto K, Yanaoka T, Kashiwabara K, Tanaka H, Miyashita M

  • 2015 Young Investigator Award (Mini-Oral 1st place).

    2015.06   European College of Sport Science   Associations between various intensities of physical activity and physical fitness in adolescents

    Winner： Kidokoro T, Yanaoka T, Kashiwabara K, Yamagami J, Tanaka H, Miyashita M

  • 2014 Young Investigator Award

    2014.08   Japanese Society of Science and Football   Movement patterns and exercise intensity during football games: football referee versus assistant referee

    Winner： Hasegawa M, Miyashita M

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Research Projects 【 display / non-display 】

  • Effectiveness of accumulating physical activity on postprandial metabolism in postmenopausal women.

    Project Year :

    2017.04
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    2020.03
     

  • The effect of gum chewing and exercise on appetite-regulated hormones and energy intake in young men

    Project Year :

    2014.04
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    2016.03
     

  • The role of physical activity in the prevention of postprandial lipaemia in older adults: translating theory into practice

    Project Year :

    2012.04
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    2015.03
     

    　View Summary

    From the Study 1, we have demonstrated that increased weekend physical activity attenuates postprandial triglyceride in postmenopausal women. From the Study 2, we have demonstrated that increased physical activity of daily living for four weeks did not influence on postprandial triglyceride in postmenopausal women. From the Study 3, we have demonstrated that interrupting regular sitting time with brief bouts of physical activity can reduce postprandial triglyceride in postmenopausal women. These data help demonstrate how small increases in repeated acute bouts of light to moderate physical activity and breaking up sitting time with short periods of achievable activity can effect postprandial lipaemia, a cardiovascular risk factor, in postmenopausal women

  • Availability of rope skipping exercise for decrease in appetite

    Project Year :

    2011.04
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    2013.03
     

    　View Summary

    The present study found that rope skipping exercise is effectively induce anorexia, and moreover this greater exercise-induced reduction in appetite may not be strongly affected by plasma acylated ghrelin and peptide-YY concentrations in rope skipping exercise with up-and-down motions of center of mass compared without ups and downs. In addition, we observed that decreased appetite after rope skipping in women rapidly recovers compared with that of men. These results may be an evidence of exercise prescription for preventing and improving obesity in considerations of sex and exercise modes

  • 生活習慣病者における分散運動が食後高脂血症に及ぼす影響

    　View Summary

    背景と目的:生活習慣病の予防を意図した身体活動に関する健康づくり指針は、一日30分以上の中強度の身体活動をできれば毎日実施する事を推奨している。またできれば毎日、一回10分以上の身体活動を一日通し計30分以上中強度で行う事も推奨している。しかし、健康に対する一回10分未満の短時間の身体活動の実質効果を調べた研究は不足している。本研究では、生活習慣病者を対象に心臓血管病の危険因子である食後の中性脂肪について、中強度で3分10回と30分1回の自転車漕ぎ運動が食後の中性脂肪値に及ぼす影響を比較した。対象・方法:8名の男性肥満者(27±2歳)は連続した2日間の工程を1週間の間隔を空け3試行に参加した。実験一日目、安静試行では参加者は運動を行わず安静を保ち、運動試行では最大心拍数の60%の強度で自動車漕ぎを3分、1日を通し10回(30分の休憩をはさみながら)、または30分1回の自転車漕ぎ運動を行った。各試行とも実験2日目、参加者は10時間の空腹の後、中脂肪食を朝食に取り、その後安静を6時間保った。血液を実験2日目の空腹時、食後2時間後、4時間後、6時間後に採取した。結果:実験2日目の食後の中性脂肪値は安静試行と比較し、分散運動試行、一過性運動試行でそれぞれ有意に低値を示した。両運動試行の間には有意な差は認められなかった。結論:男性の肥満者において、一日を通し一回あたり短時間の累積した30分の分散運動は30分の一過性運動と同程度、食後の中性脂肪値を低減することを明らかにした。従って、長時間運動が行うことができない人においても、一回あたり短時間の累積した運動は生活習慣病予防の観点で有効である

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Presentations 【 display / non-display 】

  • Exercise Gluidelines: A guideline form Japan Atherosclerosis Society

    Masashi Miyashita

    The 74ｔｈ Japanese Society of Physical Fitness and Sports Medicine conference  (Ｉｂａｒａｋｉ)  Japanese Society of Physical Fitness and Sports Medicine

    Presentation date： 2019.09

  • Exercise and Appetite

    Masashi Miyashita  [Invited]

    The 6th Annual Congress of Japan Sports Nutrition Association  (Ｔｏｋｙｏ)  Japan Sports Nutrition Association

    Presentation date： 2019.08

  • Physical activity for older adults – Implication for postprandial triacylglycerol metabolism (Invited talk)

    Masashi Miyashita  [Invited]

    2018 The Society of Chinese Scholars on Exercise Physiology and Fitness & 2018 The Society of Taiwan Scholars on Exercise Physiology and Fitness  (Taichung) 

    Presentation date： 2018.08

  • Effect of tea catechin-rich beverage intake on exercise performance (Invited talk)

    Masashi Miyashita  [Invited]

    The 8th International Conference on Sports and Exercise Science  (Bangkok)  Chulalongkorn University

    Presentation date： 2018.06

  • Impact of physical activity and physical inactivity on postprandial metabolism in older adults (Invited talk)

    Masashi Miyashita  [Invited]

    2018 Food, Exercise and Technology for Health Promotion  (Singapore)  Waseda University

    Presentation date： 2018.01

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Specific Research 【 display / non-display 】

  • 上肢及び下肢運動が運動時のエネルギー代謝応答と食後の血中代謝応答に及ぼす影響

    2020  

    　View Summary

    This study aimed toinvestigate the effects of a single bout of upper or lower body exercise onpostprandial triglyceride (TG) concentrations in healthy young men. Ninehealthy young men (aged 22 ± 2, body mass index 22 ± 2, mean ± SD ) underwentthree, 8-h experimental trials with at least a 7-day washout period: 1) control(C), 2) upper-body exercise (U) and 3) lower-body exercise (L). On the C trial,participants sat in a chair for 8 h. For the exercise trials, participantsperformed one 30-min bout of upper-body or lower-body exercise in the morning(0900-0930 h). Except for exercise, both exercise trials mimicked the controltrial. In each trial, participants consumed a standardised breakfast (1000 h)and lunch (1300 h). Blood samples were collected in the fasted state,immediately after exercise or rest (0.5 h), and at 2, 4, 6, and 8 h after thecommencement of each trial. Serum TG concentrations differed among trials andwere higher in the U trial than L and C trials. The present study demonstratesthat an acute bout of upper-body exercise increases postprandial TGconcentrations, partly due to a transient insulin resistance by thephysiological stress of unfamiliar exercise.

  • 閉経後女性における３ケ月間の断続性身体活動が食後中性脂肪に及ぼす影響

    2019  

    　View Summary

    This studywas to examine the chronic effect of increased physical activity of dailyliving on postprandial triacylglycerol (TAG) in postmenopausal women. Twentysixpostmenopausal women, aged 72 ± 5 years (mean ± SD), were randomly divided intotwo groups: active (n=11) and control (n=15) groups. The participants in theactive group were asked to increase their activities above their usuallifestyle levels  for 3 months; freely deciding the duration andintensity of their chosen activities (i.e.,at least 10 minutes per day). The participants in thecontrol group maintained their usual lifestyle for 3 months. All participantswere asked to wear a uniaxial accelerometer for 3 consecutive months. Atbaseline, after 1 month and after 3 months, all participants rested andconsumed a standardised breakfast after a 24-hour period of physical activityavoidance. Blood samples were collected in the fasted state (0 hour) and at 2,4 and 6 hours after breakfast. There was no difference in the pattern ofpostprandial TAG response between groups. Postprandial TAG was not reducedafter performing self-selected activities under free-living in postmenopausalwomen when these responses aredetermined 24 hours after the last physical activity bout.

  • 閉経後女性における断続性歩行が食後中性脂肪に及ぼす影響：エネルギー補充との比較

    2018  

    　View Summary

    Purpose: The present study examined the effect of multiple short bouts of exercise, with and without dietary replacement of the exercise-induced energy deficit, on postprandial TG in older women. Methods: Seventeen postmenopausal women underwent three, 8-hour laboratory-based trials in a random order: 1) control, 2) accumulated walking and 3) accumulated walking with energy replacement. During the control trial, participants rested for 8 hours. The accumulated walking trial comprised twenty 1.5 min bouts of brisk walking performed at a pre-determined self-selected pace with 15 min seated rest between walks. In each trial, participants consumed a standardised breakfast (0800, 0 h) and lunch (1100, 3 h). The breakfast in the accumulated walking with energy replacement trial included replacement of the same energy deficit induced by exercise. Venous blood samples were collected fasted and at 2, 4, 6 and 8 h after breakfast. Results: Time-averaged postprandial serum TG concentrations over 8 hours were lower after accumulated walking than control and accumulated walking with energy replacement. There was little difference between control and accumulated walking with energy replacement. Conclusions: Replacing the energy expenditure induced by accumulating 30 min of brisk walking in short (1.5 min) bouts diminishes the postprandial TG-lowering effect in postmenopausal women.

  • 胃の拡張がグレリンの分泌動態に及ぼす影響

    2016  

    　View Summary

    若年男性を対象に、異なる量の2つの飲料（①低質量試行②高質量試行）摂取後の消化管の動態を調べるために超音波診断装置を用いて胃幽門部断面積の計測をおこなった。その結果、胃幽門部断面積は高質量試行において低質量試行と比較して有意に高い値を示した。また、主観的な満腹感は高質量試行において上昇し、甘味・塩味への欲求は減少したものの、自由摂取の食事量調査におけるエネルギー摂取量は高質量試行において有意に高い値を示した。2時間中の胃収縮回数は高質量試行にて有意に高い値を示した。血糖、中性脂肪、遊離脂肪酸においては試行間に差は見られなかった。本研究より高質量の飲水後は、低質量の飲水後と比較して胃幽門部断面積が増加し、一時的に主観的な食欲が低下することが明らかとなった。しかし、高質量の飲水後は胃収縮回数が増加し、飲水2時間後のエネルギー摂取量の増加に繋がる可能性が示唆された。

  • 閉経後脂質異常症・2型糖尿病女性に対する断続性身体活動による食後代謝改善の有用性

    2016   鈴木克彦

    　View Summary

    Purpose: Although a single bout of continuous exercise (≥30 min) reduces postprandial triglyceride (TG), little evidence is available regarding the effect of short (≤10 min) bouts of exercise on postprandial TG in at-risk individuals. This study compared the effect of different patterns of walking on postprandial TG in older women with hypertriglyceridemia. Methods: Twelve older women (aged 71 ± 5 yrs, mean ± S.D.) with hypertriglyceridemia (fasting TG ≥ 1.70 mmol/L) completed three, one-day trials in a random order: 1) control, 2) continuous walking, and 3) short bouts of walking. On the control trial, participants rested for 8 hours. For the walking trials, participants walked briskly in either one 30-min bout in the morning (0900-0930) or twenty 90-sec bouts over 8 hours. Venous blood samples were collected in the fasted state and at 2, 4, 6 and 8 h after breakfast. Results: The serum TG incremental area under the curve was 35% and 33% lower on the continuous and short bouts of walking trials than the control trial (8.2 ± 3.1 vs 8.5 ± 5.4 vs 12.7 ± 5.8 mmol∙8h/L respectively, P = 0.001). Conclusions: Accumulating walking in short bouts limits postprandial TG in at-risk, older women with fasting hypertriglyceridemia.

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Syllabus 【 display / non-display 】

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Committee Memberships 【 display / non-display 】

  • 2018.07
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    東京都港区部活動の在り方検討委員会  委員長

  • 2016.07
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    Japan Sports Nutrition Association  International Committee

  • 2016.07
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    日本スポーツ栄養学会  国際交流委員会

  • 2015.09
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    Japanese Society of Physical Fitness and Sports Medicine  Programme Committee

  • 2015.09
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    日本体力医学会  プログラム委員会

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Social Activities 【 display / non-display 】

  • "Increased physical activity for preventing and managing metabolic syndrome"Lecturer

    Japan Dietetic Association  Health Seminar for preventing metabolic syndrome  （Nagano, Japan） 

    2016.11
    　
    　

  • "The effect of physical activity and antioxidants on oxidative stress"Lecturer

    Wismar Corporation  The 3rd Seminar on Sports and Oxidative Stress/Antioxidant  （Tokyo, Japan） 

    2016.10
    　
    　

  • "Physical activity levels in children"Lecturer

    Nagano Prefecture Saku City  School Health Committee Seminar  （Nagano, Japan） 

    2016.08
    　
    　

  • "Effects of interrupting sitting time with regular exercise on postprandial lipaemia: from exercise to daily activity interventions" Lecturer

    Lotte Corporation  Seminar  （Saitama, Japan） 

    2016.01
    　
    　

  • "The effect of lifestyle activity on oxidative stress" Lecturer

    Wismar Corporation  The 2nd Seminar on Sports and Oxidative Stress/Antioxidant  （Tokyo, Japan） 

    2015.11
    　
    　

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Media Coverage 【 display / non-display 】

  • Research Committee member

    Japan Ground Golf Association  

    Tokyo, Japan  

    2014.12

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