Training for quadriceps femoris, buttocks, hamstrings, gastrocnemius, soleus, etc; It can carry out effective training such as cardio pulmonary rehabilitation training, muscle strength training, joint range of motion training, aerobic training, fat reduction and shaping, and achieve the training purpose; It is widely used in cardio pulmonary rehabilitation, bone and joint rehabilitation, metabolic disease, sports injury, elderly rehabilitation and other fields, as well as for female fat reduction and molding and clerical groups.