Objective To study the antagonistic effects of cordyceps(CS) on atrophy of disused muscle of rats under immobilization.Methods Models of disused muscles were established by immobilizing rat hindlimbs.Changes of myosin heavy chain(MHC) expression in intrafusal and extrafusal fibers in soleus muscle were detected.The morphology and the constituent ratio of skeletal muscle fibers were observed.Results ① After the 14-day hindlimb immobilization,the soleus muscle fibers showed an evident shift toward a decreased...