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Types of muscle fibers
types of muscle fibers are also known as twitch fibers. They are usually red in
color because of the presence of large volumes of myoglobin and thus high
levels of mitochondria and oxygen. They are thus capable of producing low
levels of contractions and are resistance to fatigue. They utilize aerobic
also known as the fast oxidative fibers and are usually hybrid of both of
type I and II fibers. They usually contain large numbers of myoglobin and mitochondria, thus
they are red in color. They produce fast and strong muscle contraction because
they manufacture and split ATP at fast rate.
as fast glycolytic fibers, and are white in color because they produce low
levels of mitochondria and myoglobin. They
produce ATP at a very slow rate by anaerobic metabolism, and also break it down
very fast. Because of this, they can rapidly cause fatigue.
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Jun 29th, 2015
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