Basic study to clarify the mechanism of abdominal oblique muscle strain during baseball batting

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K20059
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 59020:Sports sciences-related
• Research Institution: Kansai University
• Principal Investigator: Horiuchi Gen 関西大学, 人間健康学部, 特任体育講師 (40824652)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: フォロースルー / バットヘッドスピード / 脇腹 / 伸張性収縮 / 逆動力学演算 / 関節トルク / 力学的仕事 / バイオメカニクス

Outline of Final Research Achievements

In this study, the torso in baseball batting during follow through was analyzed from the viewpoint of sports biomechanics. We aimed for obtaining the basic data that would contribute to understanding the mechanism of the abdominal oblique muscle strain on the pitcher side. As a results, the muscle that rotates the torso joint in the direction of catcher (i.e., the external abdominal oblique muscle on the pitcher side) is in eccentric contraction in baseball batting during the follow through. The results suggest that the higher the bat head speed immediately after the ball impact, the higher the possibility that the muscle strain of abdominal oblique muscle occurs during the follow through in baseball batting.

Free Research Field

スポーツバイオメカニクス

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた研究成果は、野球のバッティング動作中に負う投手側腹斜筋の肉離れの受傷メカニズムの理解や当該箇所における肉離れを防ぐための動作や技術などの提案をするための基礎的資料になりうるものであると考えられる。
また、野球のバッティング以外にも、野球のピッチングやゴルフのドライバーショット、テニスのストロークのような体幹の回旋を伴う類似した動作における腹斜筋の肉離れや腰痛などの傷害に関する研究の足掛かりとなることが期待される。