神经肌肉疲劳在重阻力下降设置训练中导致失败
Markus Due Jakobsen1, Emil Sundstrup, Lars Louis Andersen
1National Research Centre for the Working Environment, Copenhagen, Denmark.
Journal of strength and conditioning research
|February 24, 2026
概括
沉重的阻力下降设置训练到失败导致显著的神经肌肉疲劳跨多个腿部肌肉. 这项研究为优化抵抗运动编程提供了洞察力,以最大限度地减少肌肉疲劳.
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
- 生物力学 生物力学
背景情况:
- 暂时的肌肉疲劳是抵抗训练计划设计的关键因素.
- 关于在完整的阻力训练课程,特别是落下组中神经肌肉疲劳积累的理解有限.
- 以前的研究往往集中在单次重复期间的神经肌肉活动.
研究的目的:
- 为了研究在腿部压力下降组 (DS) 训练比赛期间的神经肌肉反应,直到暂时的肌肉疲劳.
- 在整个DS程序中分析电肌图 (EMG) 活动和其他神经肌肉指数的变化.
- 为提供有效的抵抗运动编程提供信息的数据,以最大限度地提高肌肉疲劳.
主要方法:
- 19名新手参与者 (6名女性,13名男性,年龄在28-67岁) 在10-12次重复的最大负荷下执行了3组腿按压下降,以达到肌肉衰竭.
- 从六个腿部肌肉中记录了电肌图活动:巨大的中部肌肉 (VM),巨大的侧侧肌肉,直腿肌肉,双腿肌肉,半肌肉和部最大肌肉.
- 评估神经肌肉疲劳使用规范化EMG (nEMG),波纹指数比 (WIRW51) 和中位功率频率 (MPF),以及用倾斜计测量膝关节角度.
主要成果:
- 在大多数肌肉中,正常化EMG (nEMG) 在重复中增加,但在不同组之间没有显著差异.
- 大多数肌肉的中位功率频率 (MPF) 随着重复和跨套减少,表明疲劳.
- 大多数肌肉的波形指数比率 (WIRW51) 在重复和跨套增加,这表明神经肌肉疲劳. 运动范围和收缩时间随着重复的累积而减少.
结论:
- 降落式阻力训练会在各种腿部肌肉群中引发相当大的神经肌肉疲劳.
- 观察到的nEMG,MPF和WIRW51的变化提供了神经肌肉疲劳发展的客观证据.
- 研究结果支持使用滴滴套用于诱导显著的肌肉疲劳,告知有针对性的抵抗运动编程.
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