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在重复的棒球投球过程中,骨内旋转的急性减少与脚步腿的中间纵向弧度的短暂结构变化有关:使用混合模型的试点研究

Takeru Abekura¹, Noriaki Maeda¹, Tsubasa Tashiro¹

¹Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan.

Sports (Basel, Switzerland)

|December 24, 2025

概括

由于步脚的中间纵弧 (MLA) 和吸管幻觉 (AbH) 弹性发生变化,投球性能可能会下降,这会影响肩膀内部旋转 (IR). 降低垂直地面反应力 (GRF) 可能有助于保持IR.

科学领域:

投球的生物力学.
运动医学运动医学
整形外科整形外科整形外科

背景情况:

投的有效性取决于地面反应力 (GRF) 的转移.
中间纵向门 (MLA) 损伤可能与肩膀内部旋转 (IR) 缺陷相关.
了解步脚机制对于投球表现和伤害预防至关重要.

研究的目的:

为了研究脚步腿脚形态,软组织特征和在重复投球时失去IR之间的关联.
为了确定红外运动范围 (IRROM) 在大学中变化的预测因素.
探索GRF,MLA支持和投球速度之间的关系.

主要方法:

15名大学投手进行了60次模拟比赛投球.
估计的红外运动范围 (IRROM) 在投前后.
在多个时间点测量了船尾高度,绑架器幻觉 (AbH) 机械性质,足部带膜和GRF.

主要成果:

在投球序列中,平均IRROM下降了-21.9°±8.4°.
观察到IRROM和船高度的显著下降.
在整个投球过程中,注意到了增加的AbH弹性.
更高的垂直GRF (p=0.021) 和增加的AbH弹性 (p=0.046) 与更大的IRROM损失相关.
前后侧GRF与快球速度相关 (p=0.038).

结论:

脚脚的形态和机械变化,特别是MLA支持,影响IRROM.
降低垂直GRF和AbH应力可以在不影响投速度的情况下保持IRROM.
这项研究强调了步脚的生物机械完整性在保持投手臂健康和性能方面的重要性.

关键词:

足部/生理学足部/生理学膜内旋转缺陷膜内旋转缺陷地面反应力是什么?足部内在肌肉足部内在肌肉肩关节/生理学肩关节/生理学投抛出抛出

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