The progression should be based on technique and then on endurance. The main concern is that the child first learns the proper technique. When the exercise can be performed with excellent technique for 2 repetitions beyond the prescribed repetitions, the amount of resistance can be safely increased. The main concerns with respect to strength training are safety and effectiveness.
Health and fitness professional groups, such as the American Academy of Pediatrics, the American College of Sports Medicine, the American Orthopedic Society for Sports Medicine, and the National Strength and Conditioning Association, agree that a supervised strength training program that follows recommended guidelines and precautions is safe and effective for children, 1,3,9,14,39.
