下肢肌肉协同作用在乒乓球前顶旋中风:基于肌肉协同作用理论的分析
Journal of sports science & medicine
|February 19, 2026
概括
乒乓球运动员使用三个下肢肌肉协同作用来进行前手顶旋. 优化时间激活模式,特别是在前进阶段,提高性能,同时保持运动结构.
科学领域:
- 生物力学 生物力学
- 发动机控制器的控制器
- 运动科学 运动科学 运动科学
背景情况:
- 肌肉协同理论解释了肢体的协调运动.
- 了解下肢协调对于乒乓球表现至关重要.
研究的目的:
- 在乒乓球前和顶旋转中研究下肢协调策略.
- 分析肌肉激活模式的个体变化.
- 确定基本的肌肉协同模块及其时间特征.
主要方法:
- 从八个下肢肌肉中记录了表面电肌图 (sEMG).
- 应用非负矩阵因子化 (NMF) 来提取肌肉协同作用.
- 使用K-means集群和共弦相似度来评估个体间的变化.
主要成果:
- 确定了三种不同的下肢肌肉协同集群,其组成具有高度的个体间相似性.
- 观察到每个集群的特定阶段的时间激活模式.
- 在中风阶段之间的激活区域中发现了显著的差异,时间模式具有显著的变化.
结论:
- 下肢在前手顶旋中使用三个核心肌肉协同模式.
- 这些协同作用表现出特定阶段的角色和时间协调.
- 运动员可以通过在一致的运动结构中微调时间参数来提高表现.
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