Slow Twitch Muscle Fibers (Type I)

The slow twitch muscle fibers are more efficient at using oxygen to generate more adenosine triphosphate (ATP) fuel for continuous, extended muscle contractions over a long time. They fire more slowly than fast twitch fibers and can go for a long time before they fatigue. Slow twitch muscle fibers are good for endurance activities like … Continue reading Slow Twitch Muscle Fibers (Type I)