The weightlifting is a sort of the sport, which has objects to promote the physical condition and to develop the fundamental strength in the adolescent period, but thete been no interests from the view points of sports injuries for weightlifting. So the authors have studied the changes in the lumbosacral region and wrist of the adolescent weightlifters and the results obtained are as follows; 1. The increase in the lumbosacral angle has a statistically significant relationship with the low back pain in the adolescent weightlifters. 2. The ulnar variance shows statistically significant increase than the control group and its increase seems to be a causative factor in developing wrist pain among the adolescent weightlifters.