Slow muscle fibers ________.

Name: Slow muscle fibers ________.
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Slow muscle fibers, also known as type I fibers, have a low contraction speed and can continue to contract for longer periods of time than fast fibers without fatiguing. They are supported by aerobic metabolism, as opposed to anaerobic metabolism, which is used by fast fibers. Slow fibers have a high concentration of oxygen-carrying myoglobin and mitochondria, which allow for sustained energy production.

Slow Muscle Fibers ________