Study Purpose Observe the effects of resveratrol on skeletal muscle mass, holding power, myofibril ultrastructure and AMPK/sirt1 pathway in aged rats. Method Twenty 25-month-old SD rats were randomly divided into an elderly control group (OC group, 10 rats) and an elderly resveratrol group (OR group, 10 rats), and another 10 6-month-old SD rats served as a young control group ( …