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Posts with tag Fast-twitchMuscleFibers

Fast- and slow-twitch muscle fibers

Posted: May 14th 2008 12:26PM by Chris Sparling
Filed under: Fitness, General Health, Women's Health, Men's Health, Diet and Weight Loss

Depending upon which type of exercise you perform, you mostly use one of the two types of muscle fibers.

The first of the two, slow-twitch muscle fibers, are called upon mostly during aerobic exercise (aerobic exercise in this case means the use of oxygen in the body's metabolic or energy-generating process, not a bunch of people jumping around in leotards). Slow-twitch muscle fibers react to slow, long-duration contractions. And, they're typically used at the beginning of a movement.

The second of the two, fast-twitch muscle fibers, are used more often during anaerobic exercise. These muscle fibers are utilized for rapid, short-duration contractions. Once you've started an exercise, the fast-twitch muscle fibers take the baton from the slow-twitch fibers.

If you're looking to add lean and toned muscle to your frame and drop some body fat, follow a workout program that incorporates the use of both types of the aforementioned muscle fibers.



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