News
人材検索について
ハイパフォーマンススポーツに係る研究者やサポートスタッフ等の人材情報の検索ができます。HPSCに現在勤務する職員（HPSCスタッフ）、HPSCの勤務経験者（HPSC OB/OG）、HPSCの各種事業における協力者（HPSC事業協力者）のカテゴリーに分けております。人材データベースへのご登録はHPSCからご依頼させて頂いた方のみとしております。
最終更新日：2024/04/12
笹代 純平
ササダイ ジュンペイ
(JUNPEI SASADAI)
論文
- タイトル
- タイトル（英）
- The infraspinatus muscle activity during pitching motion in baseball players with shoulder instability
- 参照URL
- https://researchmap.jp/junpei.sasadai/published_papers/31762697
- 著者
- 著者（英）
- Somu Kotoshiba,Yukio Urabe,Masafumi Hara,Motoyuki Fujisawa,Ryohei Sumida,Kei Aramaki,Junpei Sasadai,Noriaki Maeda
- 担当区分
- 概要
- 概要（英）
- Background: Shoulder microinstability is often overlooked, which can be problematic, especially in overhead athletes. The slipping phenomenon is defined as posterior or lateral sliding of the humeral head in an elevated arm. When the shoulder is close to the end range of stability, the infraspinatus is highly activated and keeps the shoulder in the glenoid cavity. This study aimed to examine the characteristic physical function and infraspinatus activity during the pitching motion in baseball pitchers with shoulder instability. Methods: Twenty-one male baseball pitchers participated and were divided into 2 groups based on radiograph findings at zero position: slipped (group S) and nonslipped (group N) groups. Physical function using Hara test and infraspinatus muscle activity during pitching were evaluated. Results: The infraspinatus muscle activity during the acceleration phase was significantly greater in group S (59.5 ± 33.0%MVC) than in group N (33.0 ± 16.9%MVC) (P < .05). Positive rate of the Hara test in group S was significantly high in the loose test and elbow push test. Conclusions: This study shows that baseball pitchers with slipping phenomenon have capsular laxity and scapular instability that indicate high infraspinatus muscle activity during the acceleration phase. Therefore, repetitive pitching with hyperactivity of the infraspinatus on the slipping shoulder may cause fatigue and dysfunction.
- 出版者・発行元
- 出版者・発行元（英）
- Elsevier {BV}
- 誌名
- 誌名（英）
- JSES International
- 巻
- in press
- 号
- 3
- 開始ページ
- 512
- 終了ページ
- 518
- 出版年月
- 2021年5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
- 2666-6383
- DOI URL
- https://doi.org/10.1016/j.jseint.2020.12.013
- 共同研究・競争的資金等の研究課題