血液流量限制对神经肌肉功能和在男性前臂曲期间疲劳的影响
Tony R Montgomery1, Alex Olmos1, Kylie N Sears1
1Department of Kinesiology, Applied Health, and Recreation, Oklahoma State University, Stillwater, Oklahoma.
Journal of strength and conditioning research
|June 20, 2024
概括
血液流量限制 (BFR) 训练可以在更少的整体工作下实现类似的神经肌肉反应. 这种方法可以提高训练效率,通过减少重复,实现可比的动力单元招聘.
科学领域:
- 运动生理学 运动生理学
- 神经肌肉功能 神经肌肉功能
- 运动科学 运动科学 运动科学
背景情况:
- 血流限制 (BFR) 在训练中越来越多地用于增强肌肉适应.
- 了解BFR在疲劳性运动期间对神经肌肉控制的影响,对于优化训练方案至关重要.
研究的目的:
- 为了研究BFR对运动单元激活模式在疲劳前臂曲期间的影响.
- 具体来说,分析平均发射速度 (MFR),动力单元动作潜能幅度 (MUAPAMP) 和招聘值 (RT) 之间的关系.
主要方法:
- 十名健康的男性在60%的闭塞压力下,在BFR和没有BFR的情况下,对失败的任务进行了对称肘部屈曲.
- 双臂肌的表面电肌图 (sEMG) 被记录并分解以分析运动单元活动.
- 配对的t测试和ANOVA被用来比较条件之间的完成的重复和运动单元-招募关系.
主要成果:
- 与对照组 (12 ± 4) 相比,BFR (9 ± 2) 完成的重复次数较少.
- BFR并没有显著改变MFR与RT或MUAPAMP与RT的关系.
- 在这两种条件下,在重复中,更高值动力单元的招聘发生了类似的情况,尽管BFR的总重复次数较少.
结论:
- BFR培训可以引起与传统培训相似的运动单元招募模式,但重复次数减少.
- 这表明BFR可能允许类似的神经肌肉适应在较少的总工作,可能增加训练效率.
- 没有观察到平均解雇率的变化,这表明招聘策略主要受到影响.
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