Analgesia Following Exercise
Analgesia Following Exercise
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运动后镇痛
作者：
K. Koltyn
在过去的20年里，许多研究已经检查了运动后是否会发生镇痛。涉及跑步和骑自行车的运动最常在人类研究中进行研究，游泳最常在动物研究中进行研究。已经发现疼痛阈值和疼痛耐受性在运动后增加。此外，给定疼痛刺激的强度在运动后被评定为较低。在实验室中已经使用了许多不同的有害刺激来产生疼痛，并且似乎在使用电或压力刺激来产生疼痛的研究中发现运动后的镇痛更一致，而在使用温度来产生疼痛的研究中则不太一致。也有有限的研究表明，镇痛可以发生后阻力运动和等长运动。目前，对运动镇痛的机制还知之甚少。虽然参与内源性阿片系统在人类研究中得到了不同的支持，但动物研究的结果似乎表明存在多种镇痛系统，包括阿片和非阿片系统。从动物研究中可以看出，运动应激源的性质在确定运动期间激活哪个镇痛系统方面很重要。
Over the past 20 years a number of studies have examined whether analgesia occurs following exercise. Exercise involving running and cycling have been examined most often in human research, with swimming examined most often in animal research. Pain thresholds and pain tolerances have been found to increase following exercise. In addition, the intensity of a given pain stimulus has been rated lower following exercise. There have been a number of different noxious stimuli used in the laboratory to produce pain, and it appears that analgesia following exercise is found more consistently for studies that used electrical or pressure stimuli to produce pain, and less consistently in studies that used temperature to produce pain. There is also limited research indicating that analgesia can occur following resistance exercise and isometric exercise. Currently, the mechanism(s) responsible for exercise-induced analgesia are poorly understood. Although involvement of the endogenous opioid system has received mixed support in human research, results from animal research seem to indicate that there are multiple analgesia systems, including opioid and non-opioid systems. It appears from animal research that properties of the exercise stressor are important in determining which analgesic system is activated during exercise.