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最終更新日：2026/03/19
青柳 壮志
アオヤギ マサシ
(Masashi Aoyagi)
論文
- タイトル
- タイトル（英）
- Changes in Passive Muscle Stiffness Following Biceps Femoris Strain Injury in Track-and-Field Athletes: Cross-Sectional and Longitudinal Analyses.
- 参照URL
- https://researchmap.jp/ma.aoyagi24/published_papers/52945783
- 著者
- 著者（英）
- Shuhei Kukuchi,Ishin Togashi,Masashi Aoyagi,Yuki Shiota,Takayuki Komatsu,Yuji Takazawa,Naokazu Miyamoto
- 担当区分
- 概要
- 概要（英）
- A history of muscle strain injury has consistently been identified as one of the strongest risk factors for future muscle strain injuries. However, information on the characteristics associated with a history of muscle strain injury is limited. This study aimed to examine whether passive muscle stiffness changes following biceps femoris long head (BFlh) strain injury in track-and-field athletes through cross-sectional and longitudinal analyses. In Study 1 (cross-sectional), 13 male track-and-field athletes with unilateral BFlh strain injury history underwent passive BFlh stiffness assessment using ultrasound shear wave elastography of previously injured and uninjured limbs. In Study 2 (longitudinal), seven athletes who sustained BFlh strain injury during the competitive season were followed from pre-injury baseline through return-to-sport. Passive BFlh stiffness was assessed in both limbs at baseline, acute phase, rehabilitation phase, and return-to-sport phase. In Study 1, passive BFlh stiffness was significantly greater in the previously injured limb than in the uninjured limb (p = 0.001). In Study 2, a significant limb × time interaction was observed (p = 0.001). In the injured limb, passive BFlh stiffness at the rehabilitation phase was significantly greater than at baseline and remained elevated at return-to-sport, whereas it returned to baseline in the uninjured limb. Passive BFlh stiffness increases following strain injury and persists through return-to-sport. These findings reveal that strain injury leads to lasting increases in passive muscle stiffness, which may have implications for post-injury muscle function.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- Scandinavian journal of medicine & science in sports
- 巻
- 36
- 号
- 3
- 開始ページ
- e70254
- 終了ページ
- 出版年月
- 2026年3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/10.1111/sms.70254
- 共同研究・競争的資金等の研究課題