扭矩发展速度和扭矩-速度关系的性别差异仅仅是由于最大强度
Francesco Salvaggio1,2,3, Paolo Riccardo Brustio2,4, Pierre Samozino5
1Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
European journal of applied physiology
|June 10, 2025
概括
男性的扭矩发展率 (RTD) 和最大自愿扭矩 (MVT) 比女性更高. 然而,在RTD中性别差异在MVT正常化时消失,表明强度,而不是速度,驱动爆炸性差异.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 运动科学 运动科学 运动科学
背景情况:
- 了解肌肉功能的性别差异对于优化训练和表现至关重要.
- 扭矩发展速度 (RTD) 和扭矩速度 (TV) 参数是爆炸性肌肉功率的关键指标.
- 以前的研究表明,这些参数中存在潜在的性别差异,但正常化效应需要进一步调查.
研究的目的:
- 分析扭矩发展速度 (RTD) 和扭矩速度 (TV) 参数中的性别差异.
- 为了研究这些差异,并没有对最大自愿扭矩 (MVT) 的规范化.
- 为了澄清最大强度与收缩速度对基于性别的爆炸性差异的贡献.
主要方法:
- 64名健康,活跃的参与者 (31名女性,33名男性) 接受了膝盖延伸器测试.
- 在同位度条件下测量了最大自愿扭矩 (MVT) 和RTD.
- 扭矩-转速关系是使用曲线适配模型建模的,使用来自增量加载协议的动态数据.
主要成果:
- 与女性相比,男性的RTD在50,100和150ms,峰值RTD和MVT显著增加.
- 当RTD通过MVT正常化时,RTD中显著的性别差异不再被观察到.
- 男性的最大理论扭矩,最大功率 (Pmax) 和Pmax上的扭矩较高;然而,最大理论速度 (V0) 在两性之间没有差异.
结论:
- 爆炸力产生 (快速同位数和动态) 的性别差异主要归因于最大强度的差异,而不是内在的收缩速度.
- 在活跃的个体中,男性在膝盖伸展过程中并不具有与女性相比本质上更高的肌肉收缩速度.
- 这些发现强调了在评估肌肉爆炸性的性别差异时考虑最大力量的重要性.
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