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最終更新日:2024/02/01

木村 新

キムラ アラタ (Arata Kimura)
論文
タイトル
タイトル(英)
Mechanical properties of upper torso rotation from the viewpoint of energetics during baseball pitching
参照URL
https://researchmap.jp/kimuraarata/published_papers/25764938
著者
著者(英)
Arata Kimura,Shinsuke Yoshioka,Leon Omura,Senshi Fukashiro
担当区分
筆頭著者,責任著者
概要
概要(英)
Abstract This study aims to examine if upper torso rotation is caused mainly by pelvis rotation during baseball pitching from the viewpoint of energetics. Twelve right-handed males participated in this study. Five were and seven had been collegiate baseball pitchers, and all used an overarm style. They threw a baseball as fast and precisely as possible, and data from three strikes were used. A motion capture system consisting of 13 cameras and two force platforms was used to collect the data and calculate joint torques of the thoracic and the lumbar joint. The joint torque of the thoracic and the lumbar joint were calculated using a top-down and a bottom-up approach, respectively. Then, the mechanical energy generation and transfer by the torsional torques were quantified. The mechanical energy generation exerted by the torsional torques of the thoracic and lumbar joints were 0.03 ± 0.03 and 0.15 ± 0.04 J kg-1 m-1, respectively. The mechanical energy transfer exerted by the torsional torques of the thoracic and lumbar joints were 0.72 ± 0.19 and 0.88 ± 0.24 J kg-1 m-1, respectively. These results indicated that torsional torques transferred a substantial amount of mechanical energy from the pelvis to the upper torso. Furthermore, the findings indicate that the mechanical energy transfer exerted by the torsional torques was a major contributor to the upper torso rotation.
出版者・発行元
出版者・発行元(英)
誌名
誌名(英)
European journal of sport science
20
5
開始ページ
606
終了ページ
613
出版年月
2020年6月
査読の有無
査読有り
招待の有無
掲載種別
研究論文(学術雑誌)
ISSN
DOI URL
https://doi.org/10.1080/17461391.2019.1646810
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