What are the types of muscle fibers?
There are two types of muscle fibers; fast twitch and slow twitch, the fast twitch fibers are fast contracting but fatigue early (as used in weight training): slow twitch fibers contract more slowly but are fatigue resistant, (as used in aerobic endurance).
Question answered by: Doug Lawrenson
More questions answered: Huge Bodybuilding & Fitness Q&A Section!
