自主调节和骨肌氧化与间歇性低负荷血流限制膝盖延伸
Andrew R Garner1, Jacob D Fanno1, Ryan McGrath1
1Department of Health, Nutrition, and Exercise Sciences, North Dakota State University, Fargo, ND, United States.
Frontiers in sports and active living
|April 4, 2025
概括
在膝盖伸展运动期间的血流限制 (BFR) 增加了肌肉应力和感知到的炼,但与标准炼相比,没有改变运动后的自主功能.
科学领域:
- 运动生理学 运动生理学
- 自主神经系统功能 自主神经系统功能
- 骨肌肉生理学 骨肌肉生理学
背景情况:
- 了解运动与血流限制 (BFR) 的生理影响对于优化训练方案至关重要.
- 以前的研究已经探讨了BFR对肌肉缩和力量的影响,但它对自主调节和肌肉氧化的影响需要进一步调查.
研究的目的:
- 要确定与间歇性BFR的急性低负荷膝盖延伸 (KE) 运动是否会影响自主调节和骨肌肉氧化 (SmO2%).
主要方法:
- 14名身体活跃的男性进行了三次会议:1RM,BFR-KE (20% 1RM与袖口压力),和控制-KE (20% 1RM自由流).
- 测量结果包括心率变化 (HRV) 度量 (lnRMSSD, lnHF, lnLF),SmO2%和感知劳动力 (RPE) 的评级.
- 统计分析包括HRV和SmO2%的重复测量ANOVA,以及RPE的配对t测试.
主要成果:
- 无论是BFR-KE还是Control-KE,运动后的lnRMSSD都最初下降,随后的lnRMSSD,lnHF和lnLF都从15分钟增加到30分钟.
- 与控制-KE相比,BFR-KE显著降低了横向巨大的SmO2% (36%与53%相比).
- 在BFR-KE (7.0AU) 期间,与控制-KE (4.5AU) 相比,感知劳力的评级显著更高.
结论:
- 在低负荷KE运动期间间歇性BFR增强局部肌肉应激和感知力度.
- 尽管增加了肌肉压力,但BFR与没有BFR的体积匹配运动相比,BFR没有影响运动后的自主调节.
- 在单方面BFR运动中,个性化的袖口压力和间歇性应用有助于增加局部肌肉应力.
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