生物医学工程学杂志

生物医学工程学杂志

基于表面肌电信号的康复过程中肌疲劳有效性分析

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肌肉疲劳分析在康复医学领域具有广泛的应用。本文以康复训练系统为应用背景,研究基于表面肌电信号的肌肉疲劳分析。通过对 10 名健康测试者在负载可调的功率自行车上进行负载递增骑行实验,同步采集了股外侧肌、股直肌和竖脊肌的表面肌电信号和通气阈值,并分析了各肌肉的肌电疲劳阈。同时分析了等长收缩和等张收缩对肌电疲劳阈测定的影响。实验结果显示在负载递增骑行运动中,肌电疲劳阈值的出现要早于通气阈值,但两者差异很小,验证了基于肌电疲劳阈来分析肌肉疲劳的有效性。对比分析骑行运动中等张收缩股外侧肌和等长收缩竖脊肌的肌电疲劳阈,发现肌电疲劳阈对不同收缩方式的肌肉均具有效果。肌电疲劳阈不受肌肉运动形式限制,在康复训练过程中能够用于防止过度训练引起的肌肉损伤,对于股骨干骨折患者康复训练过程中的疲劳监护具有重要的意义。

Muscle fatigue has widespread application in the field of rehabilitation medicine. The paper studies the muscle fatigue using surface electromyogram (sEMG) in the background of rehabilitation training system. The sEMG and ventilatory threshold of vastus lateralis, rectus femoris and erector spinae are collected synchronously and the electromyogram fatigue threshold (EMGFT) of different sEMG was analyzed by increasing load cycling experiments of 10 healthy subjects. This paper also analyzes the effect of isotonic and isometric contraction on EMGFT. Results showed that the appeared time of EMGFT was earlier than that of ventilatory threshold in the incremental load cycling. While the differences were subtle and EMGFT was verified to be effective. EMGFT has been proven effective for different muscle contraction by comparing the EMGFT of vastus lateralis and erector spinae. EMGFT could be used to keep muscle injuries from overtraining in the process of rehabilitation. Therefore, EMGFT has a great significance for femoral shaft fractures’s fatigue monitoring in rehabilitation training.

关键词: 表面肌电信号; 肌电疲劳阈值; 通气阈值; 康复训练; 肌肉疲劳

Key words: surface electromyogram; EMGFT; ventilatory threshold; rehabilitation; muscle fatigue

引用本文: 刘晓光, 李梦楠, 王立玲, 王妍, 刘秀玲, 王洪瑞. 基于表面肌电信号的康复过程中肌疲劳有效性分析. 生物医学工程学杂志, 2019, 36(1): 80-84. doi: 10.7507/1001-5515.201703089 复制

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