2010 Fiscal Year Final Research Report

Biomechanical analysis of changes in pitching motion during a simulated baseball game

Research Project

Project/Area Number	21700613
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Sports science
Research Institution	National Agency for the Advancement of Sports and Health (2010) University of Tsukuba (2009)
Principal Investigator	HIRAYAMA Daisaku National Agency for the Advancement of Sports and Health, スポーツ科学研究部, 研究員 (60466670)
Project Period (FY)	2009 – 2010
Keywords	野球 / 投球動作 / キネマティクス / キネティクス / 筋疲労
Research Abstract	The purpose of this study was to investigate the changes in pitching motion during a simulated baseball game. As the main results, the throwing arm shoulder joint abduction angle at stride foot contact decreased with increasing the number of pitches. The scapular elevation angle at stride foot contact decreased with increasing the number of pitches. The scapular abduction-adduction range of motion during stride foot contact to ball release decreased with increasing the number of pitches. The stride leg hip joint extension positive, negative and absolute work decreased with increasing the number of pitches.