Objective To study the change of creatine and creatine kinase (CK) levels in the muscle tissue after increasing uptake of creatine and to observe the affection of working capability on muscle.

• 目的 研究增加肌酸摄入量后肌肉组织中肌酸和肌酸激酶 (creatine kinase,CK)含量的变化 ,探讨补充肌酸对肌肉工作能力的影响。