肘部曲游览:在高中和职业棒球投手中进行的内部和间投手臂运动评估
Joseph E Manzi1, Brittany Dowling2, Jennifer Estrada3
1Department of Orthopaedic Surgery, Lenox Hill Hospital, New York, New York, USA.
The American journal of sports medicine
|May 13, 2025
概括
专业投手表现出减少了肘部曲的外出,潜在地将投手臂的压力和受伤风险降到最低. 高中投手表现出更大的外出,边缘球速度增长,但肘部扭矩增加.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 棒球投球分析 棒球投球分析
背景情况:
- 在特定的投球时刻,肘部曲与肘部变量扭矩 (EVT) 的增加以及之前的肘部损伤相关.
- 了解肘角在投球动力学中的作用,对于预防伤害至关重要.
研究的目的:
- 为了研究肘部曲游览如何影响高中 (HS) 和职业 (PRO) 棒球投手的投手手臂动力学.
- 为了比较HS和PRO投手在投球过程中对肘部曲的动力差异.
主要方法:
- 一个描述性的实验室研究,涉及59个HS和288个PRO.
- 使用 3D 运动捕捉 (480 Hz) 来分析每个投手的 8-12 个快球投球.
- 采用线性回归和线性混合模型来评估肘部曲外出和球速度/投手臂动力学之间的关联.
主要成果:
- 高压器的平均肘部曲曲率 (70° ± 22°) 比PRO器 (63° ± 21°) 大得多.
- 与PRO (4.8% ± 0.8% BW × BH) 相比,HS具有显著较低的平均正常化肘部扭矩 (EVT) (3.9% ± 0.7% BW × BH).
- 增加的肘部外出与更高的球速度以及增加的EVT和肘部中位力相关,特别是在HS投手中.
结论:
- 专业的投手使用减少肘部曲,这是一种减少投手臂压力的潜在机制.
- 这些发现支持先前的研究,该研究将肘部曲的增加与更高的EVT和受伤风险联系在一起,这表明它可能是有害的.
- 增加肘部外出速度对球速的好处对于HS和PRO投手来说都是最小的.
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