带有或没有血流限制的低负荷阻力运动对肌肉力量,耐力和氧化能力的影响:试点研究
Brett H Davis1, James E Stampley1, Joshua Granger1
1School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA.
Physiological reports
|June 18, 2024
概括
低负荷阻力运动与血流限制 (LLBFR) 增强了肌肉力量,耐力和瘦身量. 然而,传统的低负荷阻力运动 (LLRE) 改善了肌肉力量和线粒体氧化能力,而不会增加瘦身量或耐力.
科学领域:
- 运动生理学 运动生理学
- 肌肉生理学 肌肉生理学
- 代谢适应的过程
背景情况:
- 众所周知,低负荷耐力运动 (LLRE) 对失败有助于改善肌肉质量,力量,耐力和线粒体氧化能力 (OXPHOS).
- 将血流限制 (BFR) 纳入LLRE的具体影响,当与运动量相匹配时,对这些生理结果的具体影响仍然不完全理解.
- 了解这些差异对于优化各种健身和康复目标的训练方案至关重要.
研究的目的:
- 为了研究6周单腿低负荷阻力运动与血流限制 (LLBFR) 与体积匹配的LLRE对关键生理适应的比较影响.
- 为了评估腿部无骨肌肉质量,肌肉力量 (1-重复最大;1-RM),肌肉耐力和线粒体OXPHOS的变化.
- 阐明LLBFR和LLRE对未经训练的年轻成年人身体组成和代谢功能的不同影响.
主要方法:
- 一项试点研究涉及20名未受过培训的年轻成年人 (12名男性,8名女性),年龄为21±2岁.
- 参与者接受了为期6周的单腿LLBFR或体积匹配LLRE,每周三次.
- 运动规程包括腿部压力和膝盖伸展,每次RM的25%为4组 (30,15,15,15次重复),有或没有BFR.
主要成果:
- 与对照条件相比,LLBFR显著增加了膝盖延伸1-RM,膝盖延伸耐力和大腿无骨瘦肉量 (p <0.05).
- 在LLRE中,腿部按压和膝盖延伸1-RM显著增加 (分别为p = 0.012和p = 0.054),并显著改善线粒体OXPHOS (p = 0.047,非参数).
- LLBFR没有改善线粒体OXPHOS,而LLRE没有显著改善大腿无骨肌肉质量或肌肉耐力.
结论:
- 六周的LLBFR有效地提高了肌肉力量,肌肉耐力和大腿无骨肌肉质量,独立于线粒体OXPHOS的改善.
- 量匹配的LLRE有效地提高了肌肉强度和线粒体OXPHOS,而没有显著的增长在腿部无骨肌肉质量或肌肉耐力.
- 这些发现凸显了LLBFR和LLRE引起的差异性适应,这表明每个培训模式都有不同的应用.
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