Fast-twitch and slow-twitch fibers atrophy at the same rate.

Question

Quizplus · Accepted Answer

Fast-twitch and slow-twitch fibers have different metabolic properties, and therefore respond differently to changes in activity or aging. Fast-twitch fibers tend to atrophy more rapidly than slow-twitch fibers, as they depend on high-intensity contractions that require more energy and generate more reactive oxygen species. Slow-twitch fibers are more resistant to atrophy, as they are better adapted to sustained endurance activities and rely on oxidative metabolism, which produces less metabolic stress.

Fast-Twitch and Slow-Twitch Fibers Atrophy at the Same Rate