摘要
采用人体和动物实验观察延迟性肌肉损伤对连续运动的适应性变化。人体研究发现 ,体育系男性大学生一次性运动后即刻身体疲劳感觉 (RPE)达峰值 ,以后逐渐恢复 ;肌肉酸痛感觉、血清肌酸激酶 (CK)活性和肌红蛋白 (Mb)含量运动后第 3天达峰值 ,运动后第 7天恢复到运动前水平。 1周运动后 ,RPE、肌肉酸痛感觉、CK活性和Mb的变化明显 ,但无持续增高的趋势 ,运动后第 4天各种症状和指标均开始恢复。动物实验结果显示 ,一次离心运动导致的骨骼肌超微结构变化在运动后 2 4～ 4 8小时最为明显 ,运动后第 7天损伤程度明显减轻。连续 7天同样强度运动后骨骼肌超微结构的破坏并无积累现象 ,停止运动后第 7天基本恢复。本研究结果提示 。
Experiments on humans and rats were conducted to observe the adaptation of exercise-induced muscle injury to repeated exercise. The results indicated that the ratings of perceived exertion (RPE) in the male students of the Physical Education Department reached to the peak immediately after one bout of exercise, while the muscle soreness, the contents of serum creatine kinase (CK) and myoglobin (Mb) reached their peak on the third day post exercise, but later they gradually recovered until to their pre-exercise level on the seventh day post exercise. More obvious changes took place in the RPE, muscle soreness, serum CK and Mb one week after exercise compared with those after one bout of exercise, however, recovery began on the fourth day post exercise in the above indices. Moreover, the results in rats showed the most serious damage in the ultrastructure of skeletal muscle 24 to 48hs after one bout of exercise, but the damage became less serious on the seventh day after exercise. Besides, after 7-day repeated exercise of the same intensity, no further damage was seen in the ultrastructure of skeletal muscle, and the damage recovered on the seventh day after exercise. The results of this study suggested that an adaptation response had taken place after repeated bouts of exercise.
出处
《中国运动医学杂志》
CAS
CSCD
北大核心
2003年第2期138-142,共5页
Chinese Journal of Sports Medicine
基金
教育部高等学校博士学科点专项科研基金(批准号 :2 0 0 0 0 0 43 0 3 )
