在严重强度运动期间,男性和女性的神经肌肉疲劳
G Cristina-Souza1,2, J C Schamne2, P Souza-Santos1,2
1Grupo de Pesquisa em Exercício e Nutrição, Universidade do Estado de Minas Gerais, Poços de Caldas, MG, Brasil.
概括
与男性相比,女性在强烈骑自行车时会经历较少的神经肌肉和外周疲劳. 这与彻底的炼过程中不同的肌肉激活模式有关,女性保持更高的激活水平.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 人类表现的人类表现.
背景情况:
- 对运动生理反应的性别差异越来越多地被研究.
- 了解神经肌肉疲劳对于优化训练和表现至关重要.
- 之前的研究表明,在耐力活动中,性别之间的疲劳抵抗力可能存在差异.
研究的目的:
- 为了研究严重强度自行车运动期间神经肌肉疲劳的基于性别的差异.
- 为了比较女性和男性之间的中央和外围疲劳机制.
- 分析肌肉激活模式与疲劳发展的关系.
主要方法:
- 24名健康的参与者 (12名女性,12名男性) 进行了极度强度的自行车运动,直到疲.
- 膝盖伸缩器的最大自愿收缩 (MVC) 评估了神经肌肉疲劳.
- 自发激活和四头四肢增强的抽力测量了中心和外围疲劳.
- 电肌图记录了整个炼过程中的肌肉激活模式.
主要成果:
- 与男性相比,女性的任务失败时间较短 (P=0.025).
- 女性的整体神经肌肉疲劳 (P=0.006) 和外周疲劳 (P<0.001) 显著降低.
- 观察到不同的肌肉激活模式:女性保持更高的初始激活,而男性逐渐增加激活.
结论:
- 妇女在耗尽的严重强度骑自行车时,神经肌肉和外周疲劳较少.
- 较低的外周疲劳有助于女性更大的疲劳抵抗力.
- 性别特定的肌肉激活策略可能会影响强度炼期间疲劳的发展.
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