KEIO RESEARCHERS INFORMATION SYSTEM

Career 【 Display / hide 】

Career 【 Display / hide 】

• 2012.04

  -

  2017.03

  Research Associate (Non-tenured), Institute of Physical Education.

• 2017.04

  -

  2023.03

  Assistant Professor, Institute of Physical Education.

• 2023.04

  -

  Present

  Associate Professor, Institute of Physical Education

• 2025.03

  -

  Present

  University of Kansas, Department of Educational Psychology, Visiting Scholar

Academic Background 【 Display / hide 】

Academic Background 【 Display / hide 】

• 2008.04

  -

  2011.03

  Chukyo University, Graduate School of Health and Sport Sciences, Health and Sport Sciences Major

  Graduate School, Withdrawal after completion of doctoral course requirements, Doctoral course

• 2006.04

  -

  2008.03

  Tokai University, Graduate School of Physical Education

  Graduate School, Completed, Master's course

• 2002.04

  -

  2006.03

  Tokai University, School of Physical Education, Department of Physical Education

  University, Graduated

Academic Degrees 【 Display / hide 】

Academic Degrees 【 Display / hide 】

• Master of Physical Education, Tokai University, Coursework, 2008.03

Licenses and Qualifications 【 Display / hide 】

Licenses and Qualifications 【 Display / hide 】

• Certified Senior Mental Training Consultant in Sport, JSSP, 2019.04

• Certified Coach, 2019.10

• Certified Coach Developer, JBA, 2021

Research Areas 【 Display / hide 】

Research Areas 【 Display / hide 】

• Life Science / Sports sciences (Sports Psychology)

Research Keywords 【 Display / hide 】

Research Keywords 【 Display / hide 】

• Performance Psychology

• Motivational Climate

• Pre-performance Routine

• Mental Skills Training

• Psychological Consultation

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Research Themes 【 Display / hide 】

Research Themes 【 Display / hide 】

• ボールゲーム熟練者の多物体追跡課題おける特徴に関する研究, 

  2014.04

  -

  Present

• Relationship between pre-performance routine and task movement, 

  2006.04

  -

  Present

Books 【 Display / hide 】

Books 【 Display / hide 】

• これから学ぶスポーツ心理学三訂版

  橋口泰一・永田直也, 大修館書店, 2023.03

  Scope: 第Ⅵ部1章,  Contact page： 168-172

• Basketball Planet Vol.2 競争心を育む：ペイント内での高い決定力を目指して

  ベースボールマガジン社, 2021.08

  Scope: 競争心の心理学,  Contact page： 192-199

• バスケットボールが科学で強くなる！

  2020.01

  Scope: Quiet Eye，プリ・ショット・ルーティン，心理的競技能力,  Contact page： 84-91，170-173

Papers 【 Display / hide 】

Papers 【 Display / hide 】

• Bioimpedance analysis for identifying new indicators of exercise-induced muscle damage

  Yamaguchi S., Inami T., Ishida H., Nagata N., Murayama M., Morito A., Yamada S., Kohtake N.

  Scientific Reports 14 ( 1 )  2024.12

  　View Summary

  A noninvasive, immediate, and convenient method for assessing muscle tissue status during exercise-induced muscle damage (EIMD) has not been established. This study was designed to assess and determine parameters suitable for measuring EIMD after eccentric exercise, using multi-frequency bioimpedance analysis (BIA). Thirty-five young male participants performed dumbbell exercises with their left arm, and their BIA parameters were measured at various time points up to 168 h post exercise using a multi-frequency BIA device. At all-time points, intra and extracellular water content was greater in the left arm than in the right arm, whereas the impedance, reactance, resistance, and phase angle were lower in the left arm than in the right arm. Established EIMD indices, such as maximal isometric voluntary contraction, were measured and used in correlational analyses. Only reactance was correlated with biomarkers, indicating muscle damage (r = − 0.56 to − 0.49). Furthermore, reactance was found to correlate well with indirect indicators of EIMD, suggesting that it may be a suitable marker for evaluating EIMD. However, the relationship with the limited evaluation indices employed in this study is constrained. Future studies should investigate the correlation between reactance and direct damage indicators, such as structural damage, observed in biopsies.

  • Access to Document (DOI)

• The Effect of Prior Creatine Intake for 28 Days on Accelerated Recovery from Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial

  Yamaguchi S., Inami T., Ishida H., Morito A., Yamada S., Nagata N., Murayama M.

  Nutrients (Nutrients)  16 ( 6 )  2024.03

  　View Summary

  Despite the known beneficial effects of creatine in treating exercise-induced muscle damage (EIMD), its effectiveness remains unclear. This study investigates the recovery effect of creatine monohydrate (CrM) on EIMD. Twenty healthy men (21–36 years) were subjected to stratified, randomized, double-blind assignments. The creatine (CRE) and placebo (PLA) groups ingested creatine and crystalline cellulose, respectively, for 28 days. They subsequently performed dumbbell exercises while emphasizing eccentric contraction of the elbow flexors. The EIMD was evaluated before and after exercise. The range of motion was significantly higher in the CRE group than in the PLA group 24 h (h) post exercise. A similar difference was detected in maximum voluntary contraction at 0, 48, 96, and 168 h post exercise (p = 0.017–0.047). The upper arm circumference was significantly lower in the CRE group than in the PLA group at 48, 72, 96, and 168 h post exercise (p = 0.002–0.030). Similar variation was observed in the shear modulus of the biceps brachii muscle at 96 and 168 h post exercise (p = 0.003–0.021) and in muscle fatigue at 0 and 168 h post exercise (p = 0.012–0.032). These findings demonstrate CrM-mediated accelerated recovery from EIMD, suggesting that CrM is an effective supplement for EIMD recovery.

  • Access to Document (DOI)

• Relationships between Changes in Muscle Shear Modulus, Urinary Titin N- Terminal Fragment, and Maximum Voluntary Contraction Torque after Eccentric Exercise of the Elbow Flexors

  Inami T., Yamaguchi S., Nishioka T., Ishida H., Morito A., Yamada S., Nagata N., Murayama M.

  Journal of sports science & medicine (Journal of sports science & medicine)  22 ( 4 ) 797 - 805 2023.12

  　View Summary

  The study aimed to investigate the relationships between the shear modulus of the biceps brachii (BB) and brachialis muscle (BA) and the total of the two (BB+BA), and urinary titin N-terminal fragment (UTF), maximum voluntary isometric contraction (MVC), and other indirect markers. Fifteen healthy men performed five sets of 10 eccentric contractions using a dumbbell corresponding to 50% of MVC at 90° measured at baseline. The elbow joint of the left arm was extended from 90° to 180° (180° = full extension) in 5 s in the exercise, and was returned with support from the examiner to prevent concentric contraction. Shear modulus of BB and BA were measured by ultrasound shear wave elastography, and UTF, MVC, and range of motion of the elbow joint (ROM) were recorded before; immediately after; and 1, 24, 48, 72, 96, and 168 h after the exercise. After calculating the shear modulus of BB and BA, two values were added (BB+BA). The shear modulus peaked at 48 h, UTF peaked at 96 h, MVC and ROM changed largest at immediately, and muscle soreness peaked at 48 h post-exercise. Significant (p < 0.05) relationships were found between changes in BB shear modulus and BA shear modulus (r = 0.874), BB+BA shear modulus (r = 0.977), UTF (r = 0.681), and MVC (r = -0.538). Significant (p < 0.05) relationships were also observed between changes in BA shear modulus and BB+BA shear modulus (r = 0.957), UTF (r = 0.682), MVC (r = -0.522), and ROM (r = -0.600). Moreover, significant (p < 0.05) relationships were observed between changes in BB+BA shear modulus and UTF (r = 0.703), MVC (r = -0.549), and ROM (r = -0.547). These results indicate that shear modulus of each muscle (i.e., BB and BA) provide more precise information about muscle damage than UTF, MVC and ROM.

  • Access to Document (DOI)

• Trend of multiple object tracking : current and future for adaptation in goal-type game sports phenomena

  Nagata, N.

  Bulletin of the Institute of Physical Education, Keio University (Institute of Physical Education, Keio University )  62   10 - 18 2023

  Research paper (scientific journal), Single Work, Lead author, Corresponding author, Accepted

• Changes in Muscle Shear Modulus and Urinary Titin N-Terminal Fragment after Eccentric Exercise

  Inami T., Yamaguchi S., Ishida H., Kohtake N., Morito A., Yamada S., Shimomasuda M., Haramoto M., Nagata N., Murayama M.

  Journal of Sports Science and Medicine 21 ( 4 ) 536 - 544 2022.12

  Research paper (scientific journal), Joint Work, Accepted

  　View Summary

  This study aimed to investigate the relationship between the muscle shear modulus of the biceps brachii, urinary titin N-terminal fragment (UTF), and other damage markers after eccentric exer-cise. Seventeen healthy males performed five sets of ten eccentric exercises with dumbbells weighing 50% of the maximum voluntary contraction (MVC) at the elbow joint. Muscle shear modulus with range of interest set to only biceps brachii muscle measured by ultrasound shear wave elastography, UTF, MVC, range of motion (ROM), and soreness (SOR) were recorded before, immedi-ately after, and 1, 24, 48, 72, 96, and 168 h after eccentric exer-cise. Each marker changed in a time course pattern, as found in previous studies. The peak shear modulus showed a moderate negative correlation with peak MVC (r = –0.531, P < 0.05) and a strong positive correlation with peak UTF (r = 0.707, P < 0.01). Our study results revealed a significant relationship between muscle strength, shear modulus measured by ultrasound SWE, and titin measured by UTF, as a non-invasive damage marker after eccentric exercise to track changes in EIMD.

  • Access to Document (DOI)

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Reviews, Commentaries, etc. 【 Display / hide 】

Reviews, Commentaries, etc. 【 Display / hide 】

• Tips for communication: Example of psychological support for athlete and experiences of coach-developer

  Nagata, N

  Training Journal 43 ( 9 ) 10 - 13 2021.09

  Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work

• 令和2年度心理基礎調査報告「これまでの心理基礎調査のまとめ」

  Nagata, N. & Hashiguchi, Y.

  (Japan Para-Sports Association/ Japan Paralympic Committee)   2021.03

  Meeting report, Lead author, Corresponding author

• Bridging the gap between the field and the laboratory (2)

  Fujii, K. & Nagata, N.

  The Japan Journal of Basketball Studies (The Japan Society for Basketball Studies)  6   1 - 2 2020.11

  Article, review, commentary, editorial, etc. (scientific journal), Joint Work

  • Access to Document (DOI)

• “KEIO 2020 project” Initiatives on the Pre-Games Preparation Camps of the British Teams

  Inami, T. et al.

  Keio SFC Journal (Keio SFC Academic Society)  20 ( 1 ) 162 - 182 2020.09

  Article, review, commentary, editorial, etc. (bulletin of university, research institution), Joint Work

  • Access to Document (DOI)

• アスリートとメンタルヘルス：「学生相談」連絡会議研修会講演記録

  学生相談室紀要 (慶應義塾大学学生相談室)  49   13 - 22 2020.03

  Article, review, commentary, editorial, etc. (bulletin of university, research institution), Lead author

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Presentations 【 Display / hide 】

Presentations 【 Display / hide 】

• Changing errors in the ball motion anticipation task: the number of trials and the amount of illusion

  Nagata, N., Arai, T., & Takeichi, M.

  The 2020 Yokohama Sport Conference, 

  2020.09

  , 

  Poster presentation

• Effect of consistent preparation behavior in basketball free throw

  Nagata, N.

  22th Annual Congress of the European College of Sport Science (MetropolisRuhr) , 

  2017.07

  , 

  Poster presentation, European College of Sport Science

• Influences of different sport types on student motivation in college physical education classes.

  Nagata, N., Yamauchi, K., Sasaki., R., Kato, H., & Kondo, A.

  International Society of Sport Psychology 50th Anniversary Seminar (Roma) , 

  2015.04

  , 

  Poster presentation, International Society of Sport Psychology

• Relationship between the motivational climate and motivation of participation for exercise in college physical education classes.

  NAGATA Naoya, YAMAUCHI Ken, SASAKI Reiko, KATO Hirohito, and KONDO Akihiko

  The 9th Japan German Sport Science Symposium (Kanagawa, JAPAN) , 

  2014.09

  , 

  Poster presentation, The 9th Japan German Sport Science Symposium Organizing Committee

• A study of the validity of the motivational climate questionnaire for college physical education.

  NAGATA Naoya, YAMAUCHI Ken, SASAKI Reiko, KATO Hirohito, and KONDO Akihiko

  7th Asian-South Pacific Association of Sport Psychology International Congress (Tokyo, JAPAN) , 

  2014.08

  , 

  Poster presentation, Asian-South Pacific Association of Sport Psychology

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

Research Projects of Competitive Funds, etc. 【 Display / hide 】

• A Study of relationship on between the behavioral consistency in pre-performance routine and task performances

  2015.04

  -

  2017.03

  MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), Principal investigator

  　View Summary

  This research was examined the relationship between the behavioral consistency of pre-performance routine and task performances. The first stage of the study examined the influence on experts. As a result, task behavior was less variable on the consistent preparatory behavior than not consistent behavior. The second stage examined the influences of PPR in the learning stage. Experimental results showed that there was influence on the reproducibility of task behavior.

• ボールゲーム熟練者の多物体追跡課題おける特徴に関する研究

  2017.04

  -

  2018.03

  慶應義塾, Keio Gijuku Academic Development Funds, Principal investigator

• バスケットボール初級者に対するプリ・パフォーマンス・ルーティン学習の影響

  2013.04

  -

  2014.03

  慶應義塾, Keio Gijuku Academic Development Funds, Research grant, No Setting

• バスケットボール授業におけるシュートスキル向上のための練習方法の確立

  2012.04

  -

  2013.03

  慶應義塾, Keio Gijuku Academic Development Funds, Research grant, Principal investigator

Awards 【 Display / hide 】

Awards 【 Display / hide 】

• 大学体育スポーツ学研究　優秀論文賞

  Teraoka, E., Murayama, M., Sasaki, R., Inami, T., Higashihara, A., Noguchi, K., Kato, K., Nagata, N., & Fukushi, N.,, 2023.03, Japanese Association of University Physical Education and Sports, A study on mental health and social skills of university students under the COVID-19 outbreak: A comparison of students with and without physical education in-person classes

  Type of Award： Award from Japanese society, conference, symposium, etc.

Courses Previously Taught 【 Display / hide 】

Courses Previously Taught 【 Display / hide 】

• Physical Education A (Basketball)

  Keio University

  2012.04

  -

  Present

  , 

  Laboratory work/practical work/exercise, Within own ｆaculty

• Lecture on Physical Education 1 ( Performance Psychology)

  Keio University

  2020.04

  -

  Present

  , 

  Spring Semester, Undergraduate (liberal arts), Lecture, Within own ｆaculty

• Lecture on Physical Education 1 ( Mega-sport Event)

  Keio University

  2020.04

  -

  2023.09

  , 

  Spring Semester, Undergraduate (liberal arts), Lecture, Within own ｆaculty

• 体育学講義Ⅱ（スポーツ進化論）

  Keio University

  2020.04

  -

  2024.03

  , 

  Autumn Semester, Undergraduate (liberal arts), Lecture, Within own ｆaculty

• 体育学講義（スポーツの技と文化を探る）

  Keio University

  2019.04

  -

  2020.03

  , 

  Autumn Semester, Lecture, Within own ｆaculty

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Memberships in Academic Societies 【 Display / hide 】

Memberships in Academic Societies 【 Display / hide 】

• International Society of Sport Psychology, 

  2009.01

  -

  Present

• Association for Applied Sport Psychology, 

  2006.01

  -

  Present

• Japan Society of Physical Education, Health and Sport Sciences, 

  2005.04

  -

  Present

• Japanese Society of Sport Psychology, 

  2004.04

  -

  Present

Committee Experiences 【 Display / hide 】

Committee Experiences 【 Display / hide 】

• 2022.04

  -

  2025.03

  Member, Intelligence & Science Commission, Sports Committee, Japan Paralympic Committee

• 2021.10

  -

  2023.09

  Member, Coach Development Committee, Japan Basketball Association

• 2019.01

  -

  Present

  Editorial Board, Japanese Society for Basketball Studies