| 体力劳动至疲劳时肌肉表面募集肌电信号的动态变化 |
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| 引用本文： | 徐社教. 体力劳动至疲劳时肌肉表面募集肌电信号的动态变化[J]. 军事医学科学院院刊, 1989, 13(2): 111-113 |
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| 作者姓名： | 徐社教 |
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| 作者单位： | 卫生学环境医学研究所 |
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| 摘 要： | 本实验使用自行车功率计蹬车方式通过两种强度的负荷劳动至疲劳,测定腓肠肌和股直肌在长时间间歇收缩时表面募集积分肌电图(IEMG)和平均肌电图(MEMG).变化特点呈指数函数下降,不同于静力性收缩至疲劳的线性函数变化特点,认为能量消耗降低肌细胞膜的兴奋性可能是疲劳的主要原因.
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| 关 键 词： | 疲劳 表面肌电图 积分肌电图 |
DYNAMIC CHANGES OF SURFACE RECRUITED MYOELECTRIC SIGNAL IN EXERCISE TO FATIGUE |
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| Xu Shejiao Institute of Hygiene and Environmental Medicine,Academy of Military Medical Sciences. DYNAMIC CHANGES OF SURFACE RECRUITED MYOELECTRIC SIGNAL IN EXERCISE TO FATIGUE[J]. Bulletin of the Academy of Military Medical Sciences, 1989, 13(2): 111-113 |
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| Authors: | Xu Shejiao Institute of Hygiene Environmental Medicine Academy of Military Medical Sciences |
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| Abstract: | Bicycle ergometer at two intensity levels was used to determine the IEMG and MEMG of surface recruited myoelectric signals of m.gastrocnemius and m.rectus femoris in long term intermittent exercise to fatigue.The characteristics of the variation of IEMG and MEMG with work time showed exponential decrease.It differed from the linear function in static contraction to fatigue.It is postulated that the main cause of fatigue is the exhaustion of leading to the lowering of the excitability of muscle cell membrane. |
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| Keywords: | surface EMG fatigue integrate EMG mean EMG |
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