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

This image from video provided by UPMC and University of Pittsburgh Health Sciences shows Doug McCullough, who has spinal muscular atrophy, during tests of experimental spinal cord stimulation to ...

A drug that boosts strength in injured or aging mice restores connections between nerves and muscle and suggests ways to combat weakness in humans due to aging, injury or disease. A small molecule ...

Spinal muscular atrophy or “SMA” for short is a terrible disease in which a genetic mutation causes certain nerves responsible for sending signals to muscles to degenerate. This leads to muscles ...

Loss of muscle mass (muscle atrophy) can be a result of aging or lifestyle habits, like being inactive or eating a poor diet. Muscle loss can also point to hormone abnormalities or underlying health ...

WASHINGTON (AP) — Three people with a muscle-destroying disease destined to worsen got a little stronger – able to stand and walk more easily – when an implanted device zapped their spinal cord. On ...