Question

fast twitch muscle fiber are compostion of red muscle fiber
True or false

Answer 1

Answer:

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Explanation:

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Answer 2

Fast twitch fibers have a lower myoglobin and therefore lower oxygen content, which is why they do not appear reddish but rather bright. So they are also known as white muscle fibers. In contrast to the red fibers, they gain their energy anaerobically, which means without oxygen and mainly from the sugar glycogen.