实验性骨骼肌伤后训练的形态计量学研究

Morphometric Metrology Research of Experimental Skeletal Muscle Injury

对SD大鼠小腿三头肌急性拉伤后,进行自然修复组(EC)、牵张(PT)、跑动(MT)和静力(ST)训练等不同处理。实验结果表明:肌肉拉伤后自然修复过程表现伤面扩增、稳定和收缩3个时期:拉伤肌肉早期的牵张活动,对肌肉伤面修复产生负面影响。中、后期实施牵张练习能够加快修复的进程;跑动训练对肌肉修复有抑制效应并可使肌肉出现伤面累积,加剧损伤的程度;适度的静力训练能够促进肌肉的修复,大运动量的静力训练可致肌肉萎缩与变性。

The experimental subjects of 37 SD rats were randomly divided into four groups: natural recovering (EC), stretched training (PT), running in the treadmill(MT) and static training (ST) groups after the gastrocnemius was experimentally injured by acute straining. The experimental results show: there are 3 stages of augmentation, stabilization and reduction in the natural recovering process. Stretched training further aggravates the muscle injury in the early period of injury, but speed up recovery in the middle and late period of injury. Running exercises prevent muscle from recovery and even make the injury worse. Moderate intensity static training helps the injured muscle to recover, whereas overload static training causes atrophy and denaturalization of muscle fibers.