在举重训练期间进行监管轻链酸化:与后激活性能增强的关联
Loren Z F Chiu1, Andrew C Fry2, Andrew J Galpin3
1Neuromusculoskeletal Mechanics Research Program, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, Alberta, Canada.
Journal of strength and conditioning research
|September 20, 2023
概括
调节性轻链 (RLC) 酸化可能最初会在重复组中提高举重表现. 这项研究发现,RLC酸化与男性运动员在训练期间改善的平均杆杆功率有关.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
背景情况:
- 抵抗运动中的后激活性能增强 (PAPE) 是由于神经和内在肌肉因素造成的.
- 了解PAPE背后的分子机制对于优化训练协议至关重要.
研究的目的:
- 调查调控轻链酸化与提高举重表现之间的关联.
- 为了确定RLC酸化在初级移动器是否与多关节运动期间的性能改善相关.
主要方法:
- 九名男性运动员完成了15组3次重复的清洁拉动,达到他们1次重复最大的85%.
- 通过视频分析测量了性能指标,包括杆的峰值速度 (PV) 和平均杆功率 (AP).
- 在训练前 (PRE),中期 (MID) 和后期 (POST) 采集了Vastus lateralis肌肉活检,以评估RLC酸化.
主要成果:
- 从第一组到第三组,第四组和第五组 (大效果大小) 的平均杆功率 (AP) 显著增加.
- 杆峰值速度 (PV) 的增加并不显著,但在第3组和第4组中显示出适度的影响大小.
- AP和RLC酸化的相对变化在MID (r = 0.60) 呈正相关,在POST (r = -0.74) 呈负相关.
结论:
- 在多关节举重运动的重复发作期间,RLC酸化可能在后激活性能增强中起初起作用.
- 这些发现表明,RLC酸化与力量训练中的急性性能增长之间存在潜在的分子联系.
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