概述最大偏心和集中阻力运动之间的肌肉疲劳差异
James L Nuzzo1, Matheus D Pinto1, Kazunori Nosaka1
1School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.
Scandinavian journal of medicine & science in sports
|June 3, 2023
概括
研究人员探索了最大偏心 (ECCmax) 和集中式 (CONmax) 运动之间的肌肉疲劳差异. 与上部肌肉相比,下部肌肉在ECCmax期间表现出更大的疲劳抵抗力,影响运动处方.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
- 体育科学 运动科学 运动科学
背景情况:
- 自20世纪70年代以来,肌肉疲劳,定义为急性力量丧失,与最大偏心 (ECCmax) 和同心 (CONmax) 阻力运动相关研究.
- 尽管进行了广泛的研究,但关于ECCmax和CONmax运动之间的肌肉疲劳差异的最终结论仍然难以捉摸.
研究的目的:
- 系统地审查和综合研究的方法和结果,比较ECCmax和CONmax抵抗运动后肌肉力量的急性变化.
- 阐明异常和同心收缩之间肌肉疲劳表现的潜在差异.
主要方法:
- 一项全面的文献搜索确定了30项相关研究,调查了ECCmax和CONmax运动后肌肉力量的变化.
- 研究通常涉及20-40岁的健康男性,他们执行40-100次膝盖伸缩器或肘部曲器的异动力学重复.
- 七项研究的子集检查了 ECCmax-CONmax 运动相结合期间的肌肉疲劳,三项研究分析了在相等的相对负荷下重复的重复.
主要成果:
- 无论是ECCmax还是CONmax运动都诱导了显著的力量损失,通常不超过基线的60%,表明了实质性的力量维护.
- 上半身肌肉在ECCmax (31.4%) 和CONmax (33.6%) 运动后表现出类似的力量损失.
- 与CONmax (39.7%) 运动相比,下部肌肉在ECCmax (13.3%) 后表现出较少的力量损失,这表明增强了疲劳弹性.
结论:
- 肌肉疲劳在ECCmax和CONmax阻力训练之间表现不同,特别是在身体的下部.
- 诸如肌肉结构和日常功能需求等因素可能有助于在ECCmax运动期间下部肌肉的疲劳抵抗力更大.
- 对于异常阻力训练的运动处方,特别是对于下部肌肉,应考虑与上部肌肉相比,它们与疲劳的固有弹性.
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