在投球过程中,高的中位肘部压力是否会损害肘部的动态稳定器?
Malachy P McHugh1, Michael J Mullaney1
1Nicholas Institute of Sports Medicine and Athletic Trauma.
International journal of sports physical therapy
|August 7, 2023
概括
棒球投手的高肘扭矩会导致曲手肘 (FCU) 和曲手指表面肌 (FDS) 肌肉显著疲劳. 这种肌肉疲劳会影响投球表现期间的动态中间肘部稳定性.
科学领域:
- 运动医学 运动医学
- 生物力学 生物力学
- 整形外科 整形外科 整形外科
背景情况:
- flexor carpi ulnaris (FCU) 和 flexor digitorum superficialis (FDS) 是中间肘部的主要动态稳定器.
- 前置体 (PT) 对中间肘部稳定性的贡献较小.
研究的目的:
- 研究棒球投手中高肘扭矩与FCU和FDS肌肉的力量损失之间的关系.
- 为了确定投球诱导的压是否会影响中间肘部的动态稳定器.
主要方法:
- 一项试点研究使用EMG来确认中指和戒指曲测试优先激活FCU和FDS.
- 一项实地研究测量了大学投手投球前后的握力,中指和戒指的强度.
- 用惯性测量单元量化肘部形扭矩,将分为高和低扭矩组.
主要成果:
- 具有高瓦尔古斯扭矩的投手在投球后显著地表现出中指强度损失 (88%),恢复不完全.
- 高瓦尔古斯扭矩也显示了后环指强度降低 (94%) 和恢复有限.
- 在高扭矩组和低扭矩组之间,没有观察到握力强度的显著强度差异.
结论:
- 在投球过程中,高的中间肘部应力显著地疲劳了中间肘部的动态稳定器 (FCU和FDS).
- 这种疲劳可能会在高压投篮活动中损害肘部的稳定性.
- 针对性的强化或疲劳管理对于遇到高门扭矩的投手可能是有益的.
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