Repeated exercise, or wasting, can change the way key genes work.

The misconception that muscle can be lean or bulky lies in its appearance. “When people (say ‘lean’), they’re usually ...

More than 30 types of muscular dystrophy have been identified. They all cause problems with movement due to muscle protein defects caused by genetic mutations. Muscular dystrophy is a group of ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

What's the first thing that comes to mind when you think about the words twitch and muscle? Spasms, perhaps. You'd hardly be alone in thinking that. But when it comes to fitness, it's most commonly ...

Have you heard of fast-twitch and slow-twitch muscle fibers? These are the two types of muscle that are responsible for all your gains in the gym. And depending on how you train — and even your own ...

Runners usually talk about muscles in terms of quads, glutes, and hamstrings. Exercise physiologists, on the other hand, talk about muscles in terms of fast-twitch and slow-twitch--which is one reason ...

Muscular atrophy is the thinning, wasting, or loss of muscle tissue, leading to decreased strength and mass. There are various types of muscle atrophy and different treatments for them. One common ...

Exercise in the future could be customized for individuals based on genomics, according to a new study. For years, scientists have studied the effects of different types of exercise on the human body, ...