The Sport Information Resource Centre
The Sport Information Resource Centre

McMaster University researchers studying the mystery of why some weightlifters’ muscles grow much more quickly than others’ have found new answers through a novel experiment in which subjects worked out one leg and immobilized the other. By comparing the genetic responses of the muscles to exercise, the research team identified a set of 141 genes that are involved in regulating skeletal muscle growth. The findings generate new knowledge in the fight against debilitating muscle loss in older adults.