2010 Fiscal Year Final Research Report

Effect of the pitching on specific tension of rotator cuff muscles in shoulder.

Research Project

Project/Area Number	20500567
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Sports science
Research Institution	Kyushu Kyoritsu University
Principal Investigator	HASEGAWA Shin Kyushu Kyoritsu University, スポーツ学部, 講師 (70350444)
Co-Investigator(Renkei-kenkyūsha)	YASOJIMA Takashi 埼玉県立大学, 健康福祉学部, 講師 (00435091) NAKAZATO Kiyoshi 九州共立大学, スポーツ学部, 教授
Project Period (FY)	2008 – 2010
Keywords	回旋腱板筋 / 固有筋力
Research Abstract	The purpose of this study was to investigate the effect of pitching on specific tension of rotator cuff muscles in baseball pitchers.Cross-sectional area of supraspinatus muscle, shoulder abduction strength, and specific tension were measured in in 40 men (10 to 21 years). The 19-21 age group showed significantly higher specific tension of supraspinatus than that of 10-12 age group. Cross-sectional area of supraspinatus muscle,shoulder abduction strength, and specific tension were measured in 45 collegiate athletes (baseball pitchers,baseball fielders, throwing athletes, and gymnastics). It is suggested that the long-term continuation of the baseball pitching don't lead to a decrease in the quality of supraspinatus muscle.