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在缺血性神经肌肉电刺激中通过低水平激光预暴露缓解疲劳

Chia-Chan Wu¹, Yen-Ting Lin², Chia-Ling Hu¹

¹Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan City, TAIWAN.

Medicine and science in sports and exercise

|May 1, 2024

概括

低水平激光疗法 (LLLT) 在与神经肌肉电刺激 (NMES) 和血液流量限制 (BFR) 结合时可以减少肌肉疲劳. 这种方法可以保持肌肉力量和性,增强运动单元的招募策略.

科学领域:

运动生理学运动生理学
康复科学康复科学康复科学
生物医学工程生物医学工程

背景情况:

结合神经肌肉电刺激 (NMES) 和血液流量限制 (BFR) 是有效的肌肉缩管理,当传统的运动是不可行的.
肌肉疲劳是NMES和BFR协议中的一个显著限制.
低水平激光疗法 (LLLT) 在调节对运动的生理反应方面显示出潜力.

研究的目的:

研究低水平激光疗法 (LLLT) 在缓解由NMES和BFR联合诱导的肌肉疲劳方面的疗效.
评估LLLT在NMES-BFR训练后对神经肌肉功能和肌肉机械特性的影响.

主要方法:

36名健康成年人被随机分配到LLLT和假控制组.
在LLLT组接受了运动前的850nmLLLT (60J),然后进行了NMES和BFR联合协议,以扩展性半径长 (ECRL) 为目标.
评估包括最大自愿收缩,ECRL机械性能和同位力力追踪.

主要成果:

与对照组相比,LLLT组的最大自愿收缩减少明显较小 (-4.01%对比 -23.85%).
在LLLT中,肌肉度保持,振荡波频率和放松措施的变化减少.
在等比任务中,LLLT减弱了力波动的增加,这表明动力单元招募的改善和放电变量的减少.

结论:

使用LLLT的预暴露有效地减少了NMES和BFR结合协议后的肌肉疲劳.
通过LLLT,可以保持力量生成,肌肉硬性和力量扩展能力.
功能的好处归因于增强的耐疲劳动力单元招聘和速率编码策略.

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