在同位素亚最大值任务期间,部绑架器的神经肌肉控制的性别差异
Rodrigo Rodrigues1, Talita Molinari2, Francesca Chaida Sonda3
1Graduate Program in Health Science, Federal University of Rio Grande, Rio Grande, RS, Brazil; Sports and Exercise Neuromechanics Group, Institute of Education, Federal University of Rio Grande, Rio Grande, RS, Brazil.
Gait & posture
|November 20, 2024
概括
男性和女性表现出不同的神经肌肉控制策略来进行部绑架,女性表现出较高的部中部 (GMed) 肌肉激活和与男性相比不同的频率反应. 肌肉大小对这些电肌图 (EMG) 反应的影响在两性之间不同.
科学领域:
- 生物力学 生物力学
- 神经科学是一个神经科学.
- 人类运动科学科学 人类运动科学
背景情况:
- 了解神经肌肉控制中的基于性别的差异对于解决下肢疾病至关重要.
- 部绑架肌肉,特别是部中间肌肉 (GMed) 和紧张带 (TFL),与女性更为普遍的各种下肢病理有关.
- 以前的研究主要集中在膝盖和脚肌肉上,需要对部肌肉进行研究.
研究的目的:
- 为了比较男性和女性之间的部绑架器在亚最大异常测量任务期间的电肌图 (EMG) 变量 (振幅,低频,高频频段).
- 调查部肌肉大小 (GMed和TFL厚度) 与男性和女性EMG反应之间的关联.
主要方法:
- 36名参与者 (18名男性,18名女性) 接受了GMed和TFL肌肉和皮下厚度的测量.
- 参与者在估计的一次重复最大 (1RM) 的20%和50%时执行了亚最大的同位测部绑架任务.
- 分析了GMed和TFL的EMG振幅和频段 (低频和高频组件).
主要成果:
- 与男性相比,女性在两个任务中表现出更高的GMEDEMG振幅和不同的频率组件 (低频低,高频高) (p = 0.0010.040).
- 两性之间没有发现TFL EMG变量的显著差异.
- 在女性中,更大的GMed厚度与50%的EMG振幅较低的1RM相关,而更大的TFL厚度与跨任务的低频和高频组件的变化有关.
结论:
- 男性和女性使用不同的神经肌肉控制策略来进行部绑架,在协同肌肉中观察到的变化.
- 关节绑架者的神经肌肉控制的性别特异性可能会导致女性患上某些下肢疾病的更高患病率.
- 肌肉大小在关节绑架任务期间调节EMG反应中发挥作用,在GMed和TFL中观察到性别特定的关联.
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