肌肉强度和大小与单边渐进式阻力训练的关系
bioRxiv : the preprint server for biology
|January 27, 2025
概括
肌肉的大小和力量是相关的,但抵抗训练后出现的性别差异. 在男性中,肌肉大小和力量的相对变化没有显著的相关性,与女性不同.
科学领域:
- 运动生理学 运动生理学
- 人类表现的人类表现.
- 肌肉生物学 肌肉生物学
背景情况:
- 肌肉的强度和大小是身体功能的关键指标.
- 众所周知,阻力训练 (RT) 可以提高肌肉的强度和大小.
- 了解肌肉大小和力量之间的关系,特别是性别差异,对于优化训练计划至关重要.
研究的目的:
- 研究肌肉强度和大小之间的相关性和因果关系.
- 为了检查这些关系之前和之后单方面抵抗训练.
- 在一个大群健康成年人中,确定这些关系中的潜在性别差异.
主要方法:
- 对1233名健康成年人的回顾性分析 (504名男性,729名女性).
- 测量包括最大的自愿同度收缩强度 (MVC),一次重复的最大强度 (1RM),双肩横截面积 (CSA) 和肘部曲器体积 (VOL).
- 在基线和12周抵抗训练计划后分析数据;采用因果分析建模.
主要成果:
- 绝对肌肉强度和大小在基线和训练后都与相关,尽管在两性之间相关性很弱.
- 在RT后,MVC和VOL的相对变化在整个队列和女性中相关,但在男性中没有.
- 在1RM和VOL的相对变化之间没有发现显著的相关性;因果分析表明VOL变化影响了1RM变化.
结论:
- 性差异存在于抵抗训练后肌肉大小和力量关系的适应.
- 男性在训练后的相对肌肉大小和力量变化之间没有显著的相关性.
- 辛普森悖论可能解释了这些发现,强调了分析特定性别数据的重要性.
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