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关节协调和肌相互作用不同,取决于跳跃性能水平
Iseul Jo1,2, Hae-Dong Lee3,2
1Department of Physical Education, Graduate School of Yonsei University, Seoul, Korea.
Journal of sports science & medicine
|June 9, 2023
概括
熟练的跳跃者在反运动跳跃时更有效地利用弹性能量反弹. 这项研究揭示了肌相互作用的差异,突出了高跳者高效的神经肌肉控制.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人类运动分析 人类运动分析
背景情况:
- 反运动跳跃 (CMJ) 是评估运动肌肉力量的关键指标.
- 通过协调体段运动优化拉伸缩短周期 (SSC) 对于跳跃高度至关重要.
- 了解脚关节动态和肌相互作用在CMJ表现中的作用是必不可少的.
研究的目的:
- 调查关节运动学,运动学和肌相互作用如何随跳跃技能水平和强度而变化.
- 探索拉伸缩短周期 (SSC) 在高高低跳的基本机制.
- 为了确定熟练的跳跃者在反运动跳跃时是否表现出优越的肌肉肌相互作用.
主要方法:
- 将16名健康的男性分为高 (跳跃>50厘米) 和低 (跳跃<50厘米) 的跳跃组.
- 分析了下肢关节动力学和动力学,使用3D运动分析在轻度和最大力度的跳跃中进行了分析.
- 通过B模式实时超声波研究肌相互作用,包括带和肌动态.
主要成果:
- 增加的跳跃强度导致所有参与者的关节速度和功率都更大.
- 与低跳者相比,高跳者表现出较少的带缩短速度和较大的肌速度.
- 高空跳跃者表现出延迟脚延伸的开始,这表明加强了弹性弹射机制的利用.
结论:
- 在反运动跳跃期间的肌相互作用受到跳跃技能水平的显著影响.
- 熟练的跳跃者表现出更有效的神经肌肉控制,利用弹性能量通过肌反弹.
- 研究结果表明,通过肌相互作用优化延伸缩短周期是跳跃表现的关键差异化因素.
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