Balnave C D, Thompson M W
Department of Biological Sciences, Faculty of Health Sciences, University of Sydney, Lidcombe, New South Wales, Australia.
J Appl Physiol (1985). 1993 Oct;75(4):1545-51. doi: 10.1152/jappl.1993.75.4.1545.
Eccentric muscle contractions generate delayed onset muscle soreness (DOMS), possibly as a result of the high tensions involved causing muscle damage. Muscle function, serum indicators of muscle damage, and DOMS were investigated throughout a training regimen that involved a 40-min eccentric walk down a 25% gradient on a treadmill at 6.4 km/h once a week for 8 wk. Serum creatine kinase and myoglobin concentrations were used as indicators of muscle damage, and both demonstrated a delayed increase after the exercise protocol. The muscles that contracted eccentrically exhibited low-frequency fatigue, as well as decreases in muscle fatigability and maximal voluntary contraction force, which were greatest immediately postexercise. Although the results show that training reduces DOMS, the serum muscle protein response, and muscle function impairment, the time courses of these adaptations are different. It is suggested that the function of the muscle can be impaired without apparent muscle damage.
离心性肌肉收缩会导致延迟性肌肉酸痛（DOMS），这可能是由于所涉及的高张力导致肌肉损伤所致。在一项训练方案中，对肌肉功能、肌肉损伤的血清指标和DOMS进行了研究，该训练方案包括每周一次以6.4公里/小时的速度在跑步机上沿25%的坡度进行40分钟的离心性行走，持续8周。血清肌酸激酶和肌红蛋白浓度被用作肌肉损伤的指标，两者在运动方案后均呈现延迟性升高。进行离心收缩的肌肉表现出低频疲劳，以及肌肉疲劳性和最大自主收缩力的下降，这些在运动后即刻最为明显。尽管结果表明训练可减轻DOMS、血清肌肉蛋白反应和肌肉功能损害，但这些适应性变化的时间进程有所不同。有人提出，在没有明显肌肉损伤的情况下，肌肉功能可能会受损。
