Spinal muscular atrophy (SMA) is a genetic condition that weakens muscles throughout the body. This makes it difficult to move, swallow, and in some cases breathe. SMA is caused by a gene mutation ...

TOOLBOX: “We’re all individuals” shouted the mob outside Brian’s window in the Monty Python classic ‘Life of Brian’. Nowhere is that truer than in how athletes respond to training. Two riders may look ...

When you picture different athletes—marathon runners, gymnasts, and Olympic weightlifters, for example—you likely categorize them instinctively by their height, size, and build. But the differences in ...

ASMAs were first discovered in 1965 in people with chronic active hepatitis. Usually, your immune system will attack foreign bodies like a parasite or a virus with the antibodies made for defending ...

Fast-twitch fibers help with explosive movements like sprinting and weight lifting. Genetics and training influence the distribution of fast-twitch and slow-twitch muscle fibers. Doing strength ...