Your DNA might be giving you an edge or could be holding you back. The ACTN3 gene encodes the protein alpha-actinin-3, which is found almost exclusively in fast-twitch muscle fibers. These fibers are ...

Everyone is familiar, at least hand-wavingly, with the distinction between slow-twitch and fast-twitch muscle-fiber types. The former are great for running marathons; the latter are ideal for ...

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 ...

University of Copenhagen - The Faculty of Health and Medical Sciences Exercising regularly is one of the best defences against metabolic diseases, such as obesity and diabetes - but why? It's a ...

Scientists have performed the most in-depth analysis of fast and slow twitch muscle fibers and the different ways they respond to exercise. Their novel approach uses large scale protein analysis of ...