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跑步引起的疲劳会影响下肢肌肉协同作用和相关的生物力学

Yongxin Xu¹, Yang Yang¹, Siyuan He²

¹Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China.

|March 21, 2025

概括

疲劳会改变跑步的生物力学,但肌肉协同作用保持稳定. 肌肉激活和体重的神经肌肉适应发生,以弥补跑步期间的疲劳.

科学领域:

生物力学生物力学
发动机控制器的控制器
运动生理学运动生理学

背景情况:

疲劳会通过改变肌肉激活模式,影响多关节运动.
在跑步期间,特别是疲劳时,肌肉协调的神经调节仍然不完全理解.
肌肉协同作用,低维的神经控制结构,可以解释跑步中的协调肌肉活动.

研究的目的:

为了研究疲劳对跑步期间下肢肌肉协同作用的影响.
为了检查疲劳干预后跑步生物力学特征的变化.

主要方法:

表面电肌图和动力学/动力学数据从12名参与者的9个下肢肌肉中在疲劳协议之前和之后收集.
使用非负矩阵因子化确定了肌肉协同作用.
分析了肌肉重量和激活曲线的变化,以评估神经肌肉适应.

主要成果:

在疲劳后观察到,脚脚下曲速度,膝盖曲角度和部运动范围显著增加.
在疲劳后,垂直刚性和下肢工作减少.
虽然肌肉协同作用的数量保持不变,但它们组成的肌肉重量和激活模式发生了变化.

结论:

肌肉协同作用在跑步过程中表现出稳定性和功能一致性,即使疲劳.
改变的肌肉重量和激活曲线表明神经肌肉对疲劳的调整,可能会影响跑步动力学.

关键词:

肌肉协同作用肌肉协同作用非负矩阵因数分解的非负矩阵因数分解跑步的疲劳跑步的疲劳

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