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Effect of stimulation frequency and intensity on skeletal muscle fatigue during repetitive electrical stimulation.

机译:重复电刺激过程中刺激频率和强度对骨骼肌疲劳的影响。

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摘要

The goal of this project was to study strategies to improve muscle performance during functional electrical stimulation (FES). Specific Aim 1 compared isometric muscle performance during repetitive stimulation, with 3 different combinations of frequency and pulse duration to generate the same initial peak force: Protocol #1 used a long-pulse duration (600-mus) and low-frequency; Protocol #2 used a medium-frequency (30-Hz) and medium-pulse duration; and Protocol #3 used high-frequency (60-Hz) and short-pulse duration. The results showed that if the frequency and intensity are kept constant during FES, repetitive stimulation using a low-frequency, long-pulse-duration (Protocol #1) maximized muscle performance. Specific Aim 2 compared isometric muscle performance during repetitive electrical stimulation using 3 different strategies: constant pulse-duration and stepwise increases in frequency (frequency-modulation), constant frequency and stepwise increases in pulse-duration (pulse-duration-modulation), and constant frequency and pulse-duration (no-modulation). The results showed that frequency-modulation can help improve muscle performance during FES.
机译:该项目的目的是研究在功能性电刺激(FES)期间改善肌肉性能的策略。特定目标1比较了重复刺激过程中等距肌肉的性能,频率和脉冲持续时间的3种不同组合产生相同的初始峰值力:方案1使用长脉冲持续时间(600肌肉)和低频;协议2使用了中频(30 Hz)和中脉冲持续时间;协议3使用了高频(60 Hz)和短脉冲持续时间。结果表明,如果在FES期间频率和强度保持恒定,则使用低频,长脉冲持续时间(协议1)进行重复刺激可以使肌肉性能最大化。特定目标2使用3种不同策略比较了重复电刺激过程中的等距肌肉性能:恒定脉冲持续时间和频率逐步增加(频率调制),恒定频率和脉冲持续时间逐步增加(脉冲持续时间调制)和恒定频率和脉冲持续时间(无调制)。结果表明,调频可以帮助改善FES期间的肌肉性能。

著录项

  • 作者

    Kesar, Trisha.;

  • 作者单位

    University of Delaware.;

  • 授予单位 University of Delaware.;
  • 学科 Health Sciences Rehabilitation and Therapy.; Biology Animal Physiology.
  • 学位 M.S.
  • 年度 2006
  • 页码 85 p.
  • 总页数 85
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 康复医学;生理学;
  • 关键词

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