潜伏弛缓 latency relaxation
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骨骼肌等长收缩初期，在张力升高之前，先出现微小的张力减弱，称此为潜伏弛缓。潜伏弛缓过程如图所示，其振幅随着肌肉的长度的减少而变小。可视为是收缩时出现的收缩性蛋白质分子变化的最初表现，而 A． F． Huxley氏则认为是基于肌丝相互间的静电斥力。
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