千赫兹频率,爆发工作周期和爆发持续时间对引起的扭矩,不适和肌肉效率的影响:一个随机交叉试验
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Karenina Arrais Guida Modesto1, Priscila Karen Silva Raposo2, Isabella da Silva Almeida1
1Physical Education College, Program, Laboratory of Muscle and Tendon Plasticity, University of Brasilia, Brasília, DF, Brazil.
Physiological reports
|October 16, 2024
概括
澳大利亚电流是一种千赫兹频率交替电流 (KFAC),与俄罗斯电流相比,提供更高的肌肉刺激效率. 它在较低的振幅下产生更高的扭矩,有助于最大限度地减少肌肉缩和肌肉衰弱.
科学领域:
- 神经肌肉电刺激 (NMES) 是一种神经肌肉电刺激.
- 肌肉生理学 肌肉生理学
- 康复工程 康复工程
背景情况:
- 千赫兹频率交替电流 (KFACs) 在缓解肌肉缩和肌肉衰弱方面表现有前途.
- 治疗效益的最佳KFAC参数需要进一步研究.
研究的目的:
- 为了比较不同KFAC (澳大利亚与俄罗斯电流) 对唤起扭矩,电流效率和感知不适的影响.
- 为了确定不同工作周期对这些参数的影响.
主要方法:
- 用44名健康参与者进行随机交叉设计.
- 在1kHz (澳大利亚) 和2.5kHz (俄罗斯) 的KFAC与10%和20%的任务周期被应用到三肌 surae.
- 测量包括NMES强度,引起的扭矩,效率和最大和次最大努力期间的不适.
主要成果:
- 与俄罗斯电流相比,澳大利亚电流在最大和次最大的努力中产生了明显更高的引发扭矩和效率.
- 20%的工作周期在低于最大的努力时表现出最高的效率.
- 感知到的不适感在最大努力时与澳大利亚电流更高,但在亚最大水平时可以比较.
结论:
- 澳大利亚电流对NMES来说更有效,比俄罗斯电流更低的振幅实现更大的扭矩.
- 这些发现表明,澳大利亚电流可能是临床医生首选选择,旨在优化肌肉康复的结果.
- 进一步的研究应该考虑患者报告的结果以及客观措施.
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