Aim: To detect effect of the different frequency of chronic electrical stimulation(CES) on myofibrillar isoform,myosin heavy chain(MHC) and metabolic enzyme activities.

• 目的:探讨不同频率慢性电刺激对膈肌肌纤维亚型、肌球蛋白重链(MHC)亚型和代谢酶活性的适应性变化的影响。