沉重的心理任务在中等强度的同度收缩期间对肌肉疲劳性的性别差异没有影响
Patrik Vymyslický1, David Marko1, Dagmar Pavlů2
1Faculty of Physical Education and Sport, Charles University, 16252, Prague, Czech Republic.
Scientific reports
|October 7, 2025
概括
沉重的心理任务并没有增加肌肉疲劳性在双臂同度收缩期间的女性比男性更多. 这项研究发现,在这种特定的炼过程中,心理负荷如何影响肌肉疲劳方面,没有显著的性别差异.
科学领域:
- 运动生理学 运动生理学
- 神经科学是一个神经科学.
- 人类表现的人类表现.
背景情况:
- 以前的研究表明,女性在与精神任务并发的体力活动中比男性更容易感到肌肉疲劳.
- 这些基于性别的差异在低强度的同度或间歇性收缩中特别明显,当与苛刻的心理负载相结合时.
研究的目的:
- 为了研究沉重的心理任务对肌肉疲劳性性别差异的影响.
- 为了检查这些效应在中等强度的双臂肌肉同度收缩期间.
主要方法:
- 十七名男性和十七名女性在40%的最大自愿收缩 (MVC) 失败时进行了同度双臂肌收缩.
- 参与者完成了两个会议:一个控制 (仅收缩) 和一个压力会议 (收缩与沉重的心理任务:连续减去).
- 测量了任务失效的时间 (TTF) 和电肌图信号中位频率 (MDF) 的百分比下降.
主要成果:
- 没有显著的性别:在TTF或MDF下降方面发现了会话相互作用效应,这表明心理任务不会不成比例地影响女性.
- 没有观察到任何显著的会话效应,这表明精神任务不会改变两性疲劳.
- 虽然女性的TTF在两次会议中都比男性要长得多,但这种性别差异并没有被心理任务所加剧.
结论:
- 同时进行沉重的智力任务似乎不会增加女性的肌肉疲劳性,而在中等强度的双臂同度收缩期间,女性的肌肉疲劳性不如男性.
- 这些发现表明,在这个实验背景下,精神任务所造成的认知负载并没有在两性之间对神经肌肉疲劳产生差异性的影响.
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