REFLEX ORIGIN FOR THE SLOWING OF MOTONEURON FIRING RATES IN FATIGUE OF HUMAN VOLUNTARY CONTRACTIONS
REFLEX ORIGIN FOR THE SLOWING OF MOTONEURON FIRING RATES IN FATIGUE OF HUMAN VOLUNTARY CONTRACTIONS
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DOI：
10.1113/jphysiol.1986.sp016263
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发表时间：
1986-10-01
影响因子：
5.5
通讯作者：
LIPPOLD, OCJ
中科院分区：
文献类型：
--
作者：
BIGLANDRITCHIE, BR;DAWSON, NJ;LIPPOLD, OCJ
1. 在持续最大自愿收缩（m.v.c）疲劳期间，平均运动神经元放电率下降。在本实验中，我们发现如果疲劳肌肉保持缺血状态，休息3分钟后射击率没有恢复，但在血液供应恢复后3分钟射击率几乎完全恢复。2. 由于3分钟的时间足以恢复任何中枢兴奋性变化，因此结果支持这样的假设，即在疲劳期间，运动神经元的放电速率可能受到源自肌肉内疲劳引起的变化的外周反射的调节。
1. During fatigue from a sustained maximal voluntary contraction (m.v.c.) the mean motoneurone discharge rates decline. In the present experiments we found no recovery of firing rates after 3 min of rest if the fatigued muscle was kept ischaemic, but near full recovery 3 min after the blood supply was restored. 2. Since 3 min is thus sufficient time for recovery of any central changes in excitability, the results support the hypothesis that, during fatigue, motoneurone firing rates may be regulated by a peripheral reflex originating in response to fatigue-induced changes within the muscle.