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在膝盖延伸器扭矩控制的性别差异
Savanna Harrison1, Nicholas C Clark1, Paul Ansdell2
1School of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, UK.
概括
与女性相比,男性表现出不同的膝盖延伸肌肉扭矩控制策略. 肌肉力量控制中的这些性别差异取决于扭矩波动的幅度和复杂性.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 发动机控制器的控制器
背景情况:
- 目前关于肌肉力量和扭矩控制的性别差异的证据是模两可的.
- 了解这些差异对于各种应用至关重要,从康复到体育表现.
研究的目的:
- 为了研究膝盖延伸肌肉扭矩控制的性别差异.
- 分析在日常生活中典型的收缩强度期间对扭矩控制的量度和复杂性.
主要方法:
- 50名参与者 (25名男性,25名女性) 进行间歇性同度膝盖延伸器收缩,10%,20%和40%的最大自愿收缩 (MVC).
- 测量扭矩,并使用扭矩波动的大小 (标准偏差[SD],变量系数[CV]) 和复杂性 (近似[ApEn],阻断波动分析[DFA]α) 来量化控制.
主要成果:
- 在所有测试强度 (10%,20%,40% MVC) 上,雄性表现出更大的绝对扭矩波动 (SD).
- 在正常化波动 (CV) 中没有观察到性别差异.
- 男性在较低收缩强度 (10%,20% MVC) 时表现出较低的复杂性 (较低的ApEn,较高的DFAα).
结论:
- 在膝盖延伸肌肉扭矩控制策略中存在显著的性别差异.
- 这些差异在扭矩波动的幅度和复杂性上都很明显.
- 未来的研究应该在检查肌肉力量控制中的性别差异时考虑这两种措施.
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