非局部肌肉疲劳影响的持续时间
Ali Zahiri1, Reza Goudini1, Shahab Alizadeh1,2
1School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada.
Journal of sports science & medicine
|June 6, 2024
概括
非局部肌肉疲劳 (NLMF) 在疲劳了一条腿后,影响未炼的腿长达三分钟. 反侧肢体的力量和肌肉激活缺陷在运动后五分钟内消失,突出显示恢复持续时间.
科学领域:
- 运动生理学 运动生理学
- 神经肌肉生理学 神经肌肉生理学
背景情况:
- 非局部肌肉疲劳 (NLMF) 描述了在疲劳另一个肌肉组后,未炼的肌肉的疲劳.
- 之前对NLMF持续时间的研究是有限的,因为大多数研究评估效应立即疲劳后.
研究的目的:
- 研究非局部肌肉疲劳 (NLMF) 影响的时间进程.
- 为了确定单边膝盖延伸器疲劳后对侧面肌肉损伤的持续时间.
主要方法:
- 随机交叉研究与17名娱乐训练参与者.
- 单边膝盖延伸器 (KE) 疲劳是通过最大自愿同位数收缩 (MVIC) 引起的.
- 在疲劳后1,3分钟和5分钟测量的大侧肌和双腿肌的相对侧面KE峰值力,瞬间强度和EMG,再加上对照条件.
主要成果:
- 在疲劳后1分钟 (p < 0.0001) 和3分钟 (p = 0.005) 显著减少了对方MVIC力.
- 与对照组相比,1分钟 (p = 0.021) 和3分钟 (p = 0.041) 的瞬间强度大大减少.
- 电肌图 (EMG) 数据显示,疲劳后1分钟显著增加 (p = 0.03).
结论:
- 非局部肌肉疲劳对对侧边四肢强度和激活的影响在运动后持续长达3分钟.
- 在5分钟的时间内没有观察到任何显著的赤字,这表明在这个时间框架内恢复.
- 恢复时间是非局部肌肉疲劳的表现和解决的关键因素.
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