A lot of studies have emerged on prevention and treatment of Osteoporosis by means of physical activity these years, as becomes a researching hot point in the field of sports medicine and the clinical medicine. In order to further explore the benefits of reasonable exercise on maintaining bone health and examine the effect of exercise on skeleton of young college students, 20 male students of college were divided into exercise group (participates bodybuilding frequently) and control group (sedentary), some ...