在跳任务的两个着陆阶段下肢联合协调的差异
1College of Physical Education and Health, Longyan University, Longyan, FJ, China.
Motor control
|March 9, 2024
概括
第二个跳跃着陆阶段显示下肢关节协调发生变化,增加了膝盖和脚受伤的风险. 这项研究比较了跳中第一次和第二次着陆期间的联合协调.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 人类运动分析 人类运动分析
背景情况:
- 跳在体育运动中很常见,涉及重复的下肢负荷.
- 了解多次着陆期间的联合协调对于预防伤害至关重要.
- 之前的研究并没有完全详细地说明连续的跳跃着陆之间的联合协调的变化.
研究的目的:
- 为了比较下肢关节协调模式和跳跃跳跃的第一个和第二个着陆阶段之间的变化.
- 为了识别可能导致在重复着陆期间增加受伤风险的动力学差异.
主要方法:
- 18名经受阻力训练的男子从0.40米的高度跳下跳跃.
- 一个由八个摄像头组成的运动捕捉系统记录了动力数据.
- 修改的矢量编码和循环统计分析了关节配对协调 (部-膝盖,膝盖-脚) 和可变性.
主要成果:
- 第二个着陆阶段显示,关节-膝关节-松关节 (HsKs),膝关节-脚前部 (KfAf) 和膝关节-脚-松关节 (KsAs) 关节对的相内协调减少.
- 在第二次登陆中,KfAf和KsAs的近接关节 (膝盖) 协调增加.
- 在第二次登陆期间,HsK,KfAf和KsAf的变化更大,这表明移动模式不太稳定.
结论:
- 在第一阶段和第二阶段的降落跳跃着陆阶段之间,联合协调有很大差异.
- 在第二次降落中,协调的改变和变化的增加可能会增加膝盖和脚受伤的风险.
- 这些发现强调了需要培训策略,以应对疲劳引起的降落机械变化.
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