The most common type of headache is a tension or muscle contraction.
最常见的头痛类型是紧张或肌肉收缩。
Fatigue occurs when the interval of intermittent tetanic contraction of skeletal muscle is shortened to a certain degree and the contractile tension declines.
骨骼肌间断强直收缩期间，当刺激间隔缩短到一定程度时，收缩张力呈现逐步降低，即产生疲劳现象。
Given its effects on nociception and muscle contraction, botulinum appears to be an attractive agent in the prophylaxis against chronic daily headache or tension-type headache.
由于它在伤害感受器和肌肉收缩的效应，肉毒素在预防慢性每日头痛或紧张型头痛方面有很大的吸引力。
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