脚的支配性不会影响脚背屈曲和脚加伸期间的力变化
Chrysostomos Sahinis1, Ioannis G Amiridis1, Nikolaos Varvariotis1
1Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences at Serres, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Journal of sports sciences
|July 18, 2024
概括
肢体优势不会影响肌肉力量控制. 在足 adduction 期间主导和非主导脚之间的运动单元活动差异没有影响前肌的力稳定性.
科学领域:
- 神经肌肉生理学 神经肌肉生理学
- 发动机控制器的控制器
- 生物力学 生物力学
背景情况:
- 肢体优势影响运动控制策略.
- 了解四肢之间的运动单元控制差异对于康复和性能至关重要.
研究的目的:
- 为了比较前 (TA) 肌肉中的力稳定性和运动单元放电特征.
- 为了研究主导和非主导腿之间的差异,在脚背伸缩和足 adduction.
主要方法:
- 高密度电肌图 (EMG) 在异面收缩期间记录了TA中的运动单元活动.
- 15名年轻男子用双腿进行了最大以下的收缩.
- 分析包括平均放电率 (MDR),间尖区间变化系数 (ISI的CoV) 和过累积尖列车的标准偏差 (fCST的SD).
主要成果:
- 在两条腿之间,最大力和力波动是相似的.
- 在脚背曲过程中,没有观察到运动单元活动的显著差异.
- 对于ISI的MDR和Cov在足 adduction期间在非主导脚中较高,但没有影响力稳定性.
结论:
- 脚前部肌肉力量控制不受脚背伸或脚引过程中四肢主导的影响.
- 观察到的动力单元放电特征的差异并不能转化为四肢之间的功能性能差异.
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