Updated on 2026/03/31

Affiliation
Faculty of Sport Sciences, School of Sport and Sciences
Job title
Assistant Professor(without tenure)

Research Experience

  • 2024.04
    -
     

    Waseda University   Faculty of Sport Sciences

Education Background

  • 2021.04
    -
    2023.03

    Aichi Kyoiku University and Shizuoka University   Graduate School of Education  

  • 2019.04
    -
    2021.03

    Shizuoka University   Graduate School of Education  

  • 2009.04
    -
    2014.03

    Chukyo University  

Research Areas

  • Education   スポーツ教育,保健科教育
 

Papers

  • Actual Incidents Threatening Sports Integrity Among Top Athletes and Coaches: Focusing on Personal Attributes and Types of Occurrence Experiences

    Yasunaga Taichi, Mitsushita Kenta, Ueda Daisuke, Shiota Shingo

    The Japan Journal of Coaching Studies   39 ( 1 ) 1 - 15  2025.10

     View Summary

    The purpose of this study is to grasp the actual situation of troubles that threaten the integrity of sports in Japan by investigating the frequency of these troubles and their predictive experiences among athletes and coaches, and by analyzing the differences in position and gender. The results will be used to identify problems that should be addressed on a priority basis. Based on these findings, we will clarify the priority issues and their targets and discuss how to address them from a coaching perspective to maintain sports integrity.

    A questionnaire survey was conducted using an application targeting athletes and their coaches who are designated as Olympic-level or above. The survey included questions about the frequency of occurrences within the past two years and the frequency of two types of predictive experiences. The distribution of responses from athletes and coaches was analyzed by cross-tabulation.

    The results showed that 14 (13.7%) of the athletes had experienced “power harassment (damage)” and 15 (14.7%) had been troubled by it, which was significantly high. Similarly, 22 (15.4%) of the coaches had experienced power harassment (victimization) and 22 (15.4%) had been troubled by it, indicating that the number of respondents who had experienced power harassment (victimization) was significantly high.

    Next, the analysis of positional and gender differences in power harassment (damage) revealed that 10 (33.3%) of the female coaches had experienced power harassment and 10 (33.3%) had been troubled by it, significantly more than the male and female athletes and male coaches.

    Previous surveys on power harassment have only focused on direct experiences to understand the actual situation. However, considering the high frequency of predictive experiences prior to the occurrence of problems, power harassment may be a more serious issue than previously known. Based on the results of the comparison of occurrence frequencies among different problems, it can be said that power harassment (damage) should be given priority when dealing with top athletes in Japan. Additionally, by including coaches as subjects, it was revealed that even coaches experience power harassment, indicating a different reality from what has been pointed out in the past.

    DOI

  • Development, implementation, and evaluation of a moral education program to think about and discuss online games

    Suzuki Nozomi, Fujii Motoki, Yasunaga Taichi, Kato Hiromichi

      22   37 - 46  2025.06

    DOI

  • 体育科保健領域「けがの防止」でのリスク評価の力を育てる教材の開発と効果検証

    安永太地, 梶昭彦, 池田明生, 堀江秀史, 塩田真吾

    保健科教育学会誌   10 ( 1 ) 23 - 35  2025  [Refereed]

    Authorship:Lead author

  • 体育科保健領域「けがの防止」での当事者意識を促す教材の開発と評価-小学生を対象としたリスクマネジメント教育の推進に向けて-

    安永太地, 梶昭彦, 池田明生, 塩田真吾

    保健科教育学会誌   10 ( 1 ) 2 - 11  2025  [Refereed]

    Authorship:Lead author

  • Exploring the Use of Virtual Student Avatars in Classroom Discussions: A Case Study of a Small Junior High School Class

    Kobayashi Keita, Mukai Toshiyuki, Yasunaga Taichi, Shiota Shingo

    Information and Technology in Education and Learning   5 ( 1 ) Sh-p001 - Sh-p001  2025

     View Summary

    Honest discussions at the junior high school level are difficult, especially in small schools where interpersonal relationships are fixed and tightly knit. To address this issue, this study explored the potential use of virtual student avatars. The avatars provided rebuttals during discussions with a small class of three junior high school students. The results indicated that the students repeatedly refuted avatar opinions, leading to a noticeable expansion and deepening of their thinking. However, when the students were asked about their impressions of the avatars after the class, they reported negative impressions of the avatars, such as “Don’t make me feel like I am right.” Thus, there is a risk of being disliked when one person argues against the opinions of another person who has real feelings.

    DOI DOI2

  • 学校教員の余暇活動及び余暇観に関する調査・分析—Analysis of a Survey of School Teachers' Leisure Activities and Views of Leisure

    塩田 真吾, 可知 穂高, 小田 三成, 安永 太地

    余暇ツーリズム学会誌 = Journal of leisure and tourism   ( 12 ) 135 - 144  2025

  • Development and Evaluation of Educational Materials Aimed at Reconsidering Sports and Coaching Beliefs to Prevent the Reproduction of Violence and Power Harassment:: A First-Year Educational Practice for University Students in Physical Education and Sports Sciences

    YASUNAGA Taichi, ONUMA Kengo

    Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences)   advpub  2025

    DOI

  • A Qualitative Study of Top Athletes' Risk Responses When Faced with Inappropriate Sports Coaching:: Focusing on Violence and Power Harassment

    Yasunaga Taichi, Mitsushita Kenta, Shiota Shingo

    The Japan Journal of Coaching Studies   37 ( 2 ) 103 - 115  2024.03

     View Summary

    Inappropriate coaching such as violence and power harassment have occurred in competitive sports in Japan. These problems are thought to be caused by the characteristics of competitive sports, such as strong master-slave relationships and the virtue of perseverance. Previous studies have indicated that athletes accept inappropriate coaching in order to develop their careers and improve their athletic performance, including these characteristics. On the other hand, it is possible that athletes respond in various ways, such as by making accusations or rebelling, in light of problems such as neurosis and early retirement. Thus, when athletes are confronted with inappropriate coaching, they may not simply accept it obediently, but may choose various ways of responding to complex factors, but it has not been clarified how athletes actually judged and chose the ways of responding.

    Therefore, the purpose of this study is to clarify how athletes respond to inappropriate coaching and the factors that influence their responses. The research method was an interview survey of top athletes at the end of their careers. Retrospective interviews were conducted with three former top athletes at the international competition level and analyzed by SCAT.

    The results revealed three types of risk responses: risk aversion, risk reduction, and risk retention. In particular, the risk retention revealed a variety of factors, not only the obedience due to the master-slave relationship as pointed out in previous studies. Based on these results, it is necessary to pay attention to what factors athletes choose risk retention, rather than simply focusing on obedience, in order to improve inappropriate coaching in competitive sports. The results also suggest that inappropriate coaching may be increased when top athletes choose non-strategic retention.

    DOI

  • Development and Evaluation of Issue Setting Support Tools for Elementary School Students:: Learning through Empathizing and Defining Processes of Design Thinking on the Subject of “Library Improvement”

    TAKASE Kazuya, YASUNAGA Taichi, ENDO Yoshihito, MARUYAMA Junji, SUGINOME Ken, ARISAWA Hironori, JO Manami, SHIOTA Shingo

    Journal of Japan Creativity Society   27   1 - 20  2024

     View Summary

    This study aims to develop tools supporting issue setting for elementary students, on the subject of "Library Improvement", based on the problem that conventional problem-setting is challenging due to problem abstraction. The tools — (1) observation and (2) analysis — are based on design thinking theory. Preliminary practice using (1) and (2) shows a shift in students' questions from books and library itself to environment, psychology, and behavior, improving positive question-generation attitudes. The second practice, using only (1), shows that many question student generate use "why", however, the same tendency in factors of questions as the preliminary practice, enhancing subject understanding attitudes. Comparing both practices emphasize the need, in elementary schools, to prioritize subject understanding through observation, fostering positive question attitudes initially, followed by gradual adoption of an analytical process to enhance perspectives and positive attitudes.

    DOI

  • 教育用アバターを活用した道徳科におけるライフキャリア教育の実践

    小林渓太, 向井敏幸, 安永太地, 塩田真吾

    福井大学教育実践研究   ( 48 )  2023

  • 小規模学級に多様性を与える転校生アバターの開発と授業実践

    小林渓太, 向井敏幸, 安永太地, 塩田真吾

    福井大学教育・人文社会系部門紀要   ( 8 ) 155 - 166  2023

  • Development and Evaluation of Teaching Materials on Injury Prevention in the Field of Elementary School Health and Physical Education: Cross-curricular attempts with integrated studies

    安永太地, 安永太地, 満下健太, 梶昭彦, 池田明生, 塩田真吾, 塩田真吾

    保健科教育研究   8 ( 1 )  2023  [Refereed]

    J-GLOBAL

  • Development of a Class Design Support Tool for Effective ICT Use: Through the Deepening of Learning Activities with the Help of the Taxonomy of Educational Objectives

    福井隆介, 安永太地, 塩田真吾

    コンピュータ&エデュケーション   55   56 - 61  2023  [Refereed]

    J-GLOBAL

  • Development and evaluation of harassment prevention materials to promote a sense of ownership in top athletes:: Teaching materials for instruction in health and physical education and club activities

    YASUNAGA Taichi, UEDA Daisuke, SHIOTA Shingo

    Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences)   67   915 - 927  2022.12  [Refereed]

     View Summary

    As harassment, such as power harassment and sexual harassment, in competitive sports has become a serious social problem in Japan in recent years, there is a need to develop educational approaches to protect the integrity of athletes. This study developed educational materials to promote awareness of harassment issues among top athletes and verify the effectiveness of these materials. To help athletes understand their behavior more objectively and to be more aware of what might be perceived as harassment, teaching materials on “sexual harassment” and “power harassment” situations were developed to educate them on perception differences. Then, a training session was conducted with top athletes to evaluate the teaching materials, and pre- and post-questionnaire surveys were conducted for individual and group events. This analysis revealed significant differences in the
    mean scores for “awareness of sexual harassment and power harassment” in both individual and group events. In addition, significant differences were found in “relevance of sexual harassment and power harassment to oneself” in the individual category. This suggests that these materials had raised athletes' awareness of the parties involved in harassment issues.

    DOI

  • Analysis of the Actual Situation and Factors of Sport Integrity Attitudes for Top Athletes

    YASUNAGA Taichi, MITSUSHITA Kenta, UEDA Daisuke, SHIOTA Shingo

    Japan Journal of Educational Technology   46 ( 2 ) 275 - 288  2022.05  [Refereed]

     View Summary

    In recent years, several predicaments have affected the sporting world, which has focused its attention on enhancing and preserving sport integrity. Although educational approaches are considered important, the reality of attitudes toward sport integrity remains unclear because of the lack of survey on problematic situations related to sport integrity. The purpose of this study is to clarify the actual situation and factors of sport integrity attitudes of athletes and coaches by using the scenario assumption method for 10 problems related to sport integrity. The results of the cross-tabulation showed that the sport integrity attitude of "sexual harassment," "violence," and "discrimination/prejudice" was low relative to the 10 troubles. The results of factor analysis suggested that the factor structure of attitudes toward sport integrity was divided according to the clarity of judgment criteria, and that there were two types of situations: situations with clear judgment criteria and situations with unclear judgment criteria. In addition, both players and instructors tended to be more sympathetic to problematic behaviors in scenes with unclear judgment criteria than in scenes with clear judgment criteria.

    DOI

  • Development and Evaluation of ”Good Media Quitting Skills” to Improve Long-Term Media Use-A Practical Study of Sleep Education in Junior High School Health Sciences-

    安永太地, 近藤悠香, 酒井郷平, 塩田真吾

    保健科教育研究   7 ( 1 )  2022  [Refereed]

    J-GLOBAL

  • The Impact of Information Moral Knowledge to Frequency of Trouble Experience

    MITSUSHITA Kenta, YASUNAGA Taichi, SAKAI Kyohei, SHIOTA Shingo

    Japan Journal of Educational Technology   46 ( Suppl ) 61 - 64  2022  [Refereed]

    DOI

  • A Study on Information Literacy Needed in Japanese School Education: Weighting of Information Literacy by Human Resources in a Major IT Company

    Kachi Hodaka, Yasunaga Taichi, Sakai Kyohei, Shiota Shingo

    Computer & Education   50   100 - 103  2021.06  [Refereed]

     View Summary

    This study sought to determine the information literacy needed in Japanese school education. Fifty-three employees from two major Japanese IT companies completed a questionnaire focused on the possible information literacy that could be included in future school curricula. The analysis found that “information morality and security” skills were considered the most important and that it would be best to develop these qualities and skills in the early stages of compulsory education.

    DOI CiNii J-GLOBAL

  • Development of Thinking Tools to Foster Creative Problem Solving Skills: A Trial in Programming Education

    Kazuya Takase, Taichi Yasunaga, Shingo Shiota

    International Journal of Information and Education Technology   10 ( 6 ) 471 - 475  2020  [Refereed]

  • Attempts at Learning Creative Problem-Solving in Remote Schools: Professional CPS Student Evaluation Using a Video Calling Application

    Taichi Yasunaga, Kazuya Takase, Mei Katsumura, Kyohei Sakai, Shingo Shiota

    International Journal of Information and Education Technology   10 ( (7) ) 547 - 551  2020  [Refereed]

    Authorship:Lead author

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Books and Other Publications

  • 体育科教育2024年10月号 特集:キャリア教育×保健体育・スポーツ,「支える」スポーツをテーマにした問題解決型キャリア教育授業

    ( Part: Contributor)

    大修館書店  2024.10

  • 防災教育とICT

    藤井, 基貴, 村越, 真, 中村, 美智太郎, 塩田, 真吾

    ITSC静岡学術出版事業部  2023.03 ISBN: 9784864741736

  • スポーツ・インテグリティ入門(卓球編)

    ( Part: Joint author)

    静岡大学現代教育研究所  2022.04

  • 自律的思考を促すスポーツ・インテグリティ教育 ―理論と実践の構築を目指してー

    藤井基貴, 村越 真, 中村美智太郎, 塩田真吾, 満下健 太, 安永太地

    静岡学術出版  2021.03 ISBN: 4864741484

    ASIN

  • VUCA時代に対応した安全教育: ⑨部活動のけがを予防する考え方を身につけよう

    ( Part: Joint author)

Research Projects

  • レジリエンス性を軸とした安全管理と安全教育の融合によるリスクの見方・考え方の育成

    日本学術振興会  科学研究費助成事業

    Project Year :

    2024.04
    -
    2028.03
     

    村越 真, 酒井 郷平, 中村 美智太郎, 塩田 真吾, 満下 健太, 藤井 基貴, 安永 太地

  • Development of Educational and E-Learning Materials for the Prevention of Violence and Harassment in Competitive Sports

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2024.07
    -
    2026.03
     

Misc

  • Development and evaluation of sports integrity educational materials based on the principle of aspiration: Targeting youth soccer players*.

    Yasunaga Taichi, Fujii Motoki

    International Journal of Sport and Health Science   advpub  2026

     View Summary

    There are 2 key issues central to sports integrity education in Japan. First, while both aspirational ethics and preventive ethics are important, there is a bias toward practical research focusing on preventive ethical approaches, whereas insufficient attention is given to aspirational ethics. Second, despite the necessity of sports integrity education for young individuals, especially considering the trend toward younger top athletes, there has been a lack of practical research on this topic. In the light of these issues, this paper proposes new teaching materials and instructional methods designed to achieve an aspirational ethics education approach, drawing on recent practices in moral education that emphasize “thought and discussion” in schools. Additionally, it discusses approaches for the training for top youth athletes and assesses the effectiveness of such training. In developing the teaching resource, materials aimed at “value clarification” were employed to help players explore their ideals and values, while materials focusing on “moral dilemmas” were also included to allow individuals to reflect on their role as athletes by making choices in morally conflicting situations. The training was conducted with 40 J-League youth soccer players as part of a 50-minute sports integrity session. The focus was on mutual learning and the exploration of values and ideals cherished by the players themselves, rather than on providing definitions or transmitting knowledge of sports integrity. The results indicated that only ideal values elicited a significant increase in the number of ideal images articulated by the players before and after the training. In addition, free responses such as “What skills do I need now?” were observed, suggesting that exposure to the values of others prompted the players to reconsider, expand, and deepen their own important values. Furthermore, the materials focusing on moral dilemmas provided an effective opportunity to deepen discussions and explore a range of values by engaging players in debates covering 5 ethical conflict situations from opposing viewpoints. In conclusion, this study demonstrated that the use of materials focusing on moral dilemmas prompting individuals to ask “What kind of athlete do I want to be?” and encouraging reaffirmation of values and ideals through discussion of morally conflicting situations was an effective approach for aspirational ethics education. This approach was considered to help athletes realize and pursue their own ideals and values.

    DOI

 

Syllabus

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Internal Special Research Projects

  • ユース世代を対象としたスポーツを用いたライフキャリア教育の実践研究

    2025  

     View Summary

    本研究では,情報社会の進展や価値観の多様化が進む現代において,仕事のみならず余暇や生活を含めたライフキャリア教育の重要性が高まっているという課題意識のもと,ユース世代を対象に,スポーツを用いたライフキャリア教育教材の開発に取り組んだ.特に,学校体育において「スポーツ嫌い」が指摘される中,競技成績や技能向上に偏らず,スポーツの「楽しさ」や「心地よさ」に着目し,ウェルビーイングの観点からそれらを言語化することを重視した点に本研究の特徴がある.本研究の対象は,スポーツ系大学の初年次学生であり,教養教育の授業として実施した.具体的には,これまでのスポーツ経験を時間軸で振り返る「スポーツ人生史」の作成や,最も充実していた場面をもとにスポーツの「好き」を分解・可視化するワークを中心とした教材を開発した.さらに,グループでの共有や対話を通じて,他者の多様な感じ方や価値観に触れる活動を組み込み,スポーツ体験の内省を自己理解へとつなげる構成とした.試作段階におけるテスト的な活用からは,スポーツの楽しさを言葉にするプロセス自体が,スポーツ観を見直し,生涯スポーツの観点やウェルビーイングを考える契機となる可能性が示唆された.一方で,開発した教材については,体系的な授業実践および量的・質的な効果測定は今後の課題である.今後は,実際の教育現場における実施を通じて,ウェルビーイング意識やライフキャリア意識への影響を検証し,より汎用性の高い教材への改善を進めていく予定である.

  • 大学生アスリート向けスポーツ・インテグリティ教育プログラムの検討

    2024  

     View Summary

    本研究では、大学生アスリートのスポーツ・インテグリティに関する教育プログラムの開発を目的として、安全人間工学のヒューマンエラー理論を応用した教材の作成を進めている。初年度の活動として、大学生アスリートの不祥事に関する先行研究の整理を行い、薬物使用やハラスメントなどのリスク要因を分析した。その結果、既存の啓発活動は知識伝達型の講義やポスターが中心であり、当事者意識の欠如が課題として挙げられている。そこで、本研究では当事者意識を促すためにサボタージュ分析を援用した教育手法を取り入れた。安全人間工学の分野におけるリスクマネジメント理論の1つであるサボタージュ分析は、「事故を起こす」ことを目標として設定し、それを達成するための手段や状況を考えた上で、対策を講じる手法である。他領域ではこの手法が学習者の当事者意識を促すことに有効であることが示されており、アスリートのリスクマネジメント教育にも活用可能であると考えた。次年度は、開発した教材を用いた教育実践を予定通り実施し、その効果を測定する。具体的には、介入前後の比較調査を行い、大学生アスリートのリスクへの当事者意識の変化を分析する。さらに、研究成果を学術論文として発表するための準備を進めており、得られたデータを分析し、国内体育系学会への投稿を目指す。