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Fast twitch fibers
Burn ATP faster to provide fast movements. They use less oxygen and are pale in color.
Slow twitch fibers
Burn ATP slower and allow posture muscles to have stamina. They are red in color because they use more oxygen.
isometric muscle contraction
muscle contraction where the length of the muscle remains the same. ( never produces movement)
isotonic muscle contraction
muscle contraction where the muscle tone doesn't change. (always produces movement)
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