在水平腿按压时的肌肉激活在不同的血流限制压力下
Conrado Guerra de Sá1, Flavio de Souza Araujo1, Lucas Rocha Eliziario da Silva1
1Universidade Federal Do Vale Do São Francisco, Petrolina-PE, Brazil.
Journal of bodywork and movement therapies
|September 16, 2025
概括
与没有限制相比,在低强度腿部压力运动中血流限制 (BFR) 并没有显著改变肌肉激活. 不同的BFR压力百分比产生了类似的结果,这表明在各种条件下肌肉参与度相似.
科学领域:
- 运动生理学 运动生理学
- 生物力学 生物力学
- 肌肉生理学 肌肉生理学
背景情况:
- 血流限制 (BFR) 训练越来越多地用于增强肌肉适应.
- 了解不同BFR压力在抵抗运动期间对肌肉激活的影响,对于优化训练方案至关重要.
- 使用BFR的低强度运动是潜在地实现高变形和强度增长,减少关节应力的一个感兴趣领域.
研究的目的:
- 在不同的血流限制 (BFR) 压力百分比 (30%,50%,80%) 和没有限制的情况下,比较腿部按压运动期间的肌肉激活.
- 为了研究不同强度的BFR在低负荷,高重复腿部压力期间对肌肉活动的影响.
- 为了确定不同的BFR压力是否会影响四头肌肌肉 (直骨,横骨,中骨) 的电肌图 (EMG) 活动.
主要方法:
- 十六个久坐不动的年轻人进行了随机的腿部按压 (4组15次重复,一次RM的40%).
- 实验条件包括没有BFR和BFR在最大封闭压力的30%,50%和80%.
- 表面电肌图 (sEMG) 记录了直骨 femoris,横骨 vastus 和中骨 vastus 的活动,使用动态峰值 RMS 方法将其正常化.
主要成果:
- 电肌图 (EMG) 活动显示了VM (Set 3 > Set 1) 和RF (Set 1 > Set 2) 的 50% BFR 集之间的显著差异.
- 不同的BFR压力百分比和无限制条件之间没有发现肌肉激活的显著差异.
- 总的来说,在所有测试的BFR强度和腿部压力运动期间的对照条件中,肌肉激活模式是相似的.
结论:
- 在同样低强度的腿压运动中,在不同百分比的血流限制和没有血流限制的情况下,观察到类似的肌肉激活水平.
- 不同的BFR压力 (30%,50%,80%) 的应用并没有导致与非受限制条件相比显著不同的肌肉激活.
- 这些发现表明,在这种特定的低强度和体积下,BFR可能不会在腿部按压练习期间显著改变神经肌肉招募模式.
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