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J-GLOBAL ID：200901054580465847   Update date: Feb. 01, 2024

Yanai Toshimasa

ヤナイ トシマサ | Yanai Toshimasa
Affiliation and department：
Waseda University Faculty of Sport Sciences

About Waseda University Faculty of Sport Sciences


Job title： Professor
Research field  (1)： Sports science
Research keywords  (1)： Biomechanics
Research theme for competitive and other funds  (8)：
  • 2019 - 2022 野球肘のリスク軽減とパフォーマンス維持を両立する投球動作の解明
  • 2016 - 2018 Relationship between respiratory muscle function and swimming performance
  • 2014 - 2017 Analysis of swimming techniques with an accurate reconstruction of body surface dimensions
  • 2014 - 2017 Coefficient of restitution of a baseball bat is not a set quantity, but it is altered as angular and translational swing velocities and the point of impact are changed
  • 2012 - 2015 Mechanism and adaptability of human movement performance approached with in vivo measurement of musculotendinous behavior
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Papers (121)：
  • Toshimasa Yanai, Ryan Crotin, Tanghuizi Du. Proximal to distal sequencing impacts on maximum shoulder joint angles and the risk of impingement in baseball pitching involving a scapular independent thoracohumeral model. Scandinavian journal of medicine & science in sports. 2023
  • Kazuhiro Umemura, Toshimasa Yanai, Yasushi Nagata. Application of VBGMM for pitch type classification: analysis of TrackMan's pitch tracking data. JAPANESE JOURNAL OF STATISTICS AND DATA SCIENCE. 2021. 4. 1. 41-71
  • Ryan L Crotin, Toshimasa Yanai, Peter Chalmers, Kenneth B Smale, Brandon J Erickson, Koji Kaneoka, Masaya Ishii. Analysis of Injuries and Pitching Performance Between Major League Baseball and Nippon Professional Baseball: A 2-Team Comparison Between 2015 to 2019. Orthopaedic journal of sports medicine. 2021. 9. 5. 23259671211008810-23259671211008810
  • Ryosuke Furuya, Hikaru Yokoyama, Milos Dimic, Toshimasa Yanai, Tobias Vogt, Kazuyuki Kanosue. Difference in racket head trajectory and muscle activity between the standard volley and the drop volley in tennis. PloS one. 2021. 16. 9. e0257295
  • Shigetada Kudo, Yuji Mastuda, Toshimasa Yanai, Yoshihisa Sakurai. Forwards-backwards hand velocity induced by the upper trunk rotation in front crawl strokes and its association with the stroke frequency. Journal of Sports Sciences. 2021
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MISC (49)：
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Education (3)：
  • - 1996 University of Iowa, Graduate School Exercise Science
  • - 1991 Indiana University, Bloomington School of HPER Athletic Training / Sports Medicine
  • - 1987 Chukyo University Faculty of Physical Education Physical Education
Professional career (1)：
  • Doctor of Philosophy (University of Iowa)
Work history (5)：
  • 2008/09 - Professor, Waseda University
  • 2004/04 - 2008/08 Professor, Chukyo University
  • 1997/02 - 2004/01 Lecturer, University of Otago
  • 1996/05 - 1996/07 Lecturer, University of Iowa
  • 1991/08 - 1996/05 University of Iowa
Awards (1)：
  • 1998/07 - International Society of Biomechanics in Sports The New Investigator's Award
※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

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