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ofcourse not; slow twitch muscle fibers are: * smaller in diameter * red in color * depend on oxidative phosphorylation for their ATP supply * are highly vascularized (better blood supply) * have more mitochondria * more myoglobin fast twitch muscle fibers * larger * white * glycolysis is the source of ATP * less vascularized * less mitochondria * less myoglobin

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15y ago
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14y ago

Fast-twitch fibers can deliver a quick burst of power. Slow-twitch fibers can maintain a contraction for a longer time.

Because of the higher energy demands of slow-twitch fibres (due to their more frequent and prolonged usage) they have a higher density of mitochondria for energy and myoglobin to provide oxygen. Meanwhile, fast-twitch fibres tend to have larger stores of glycogen so that vast quantities of energy can be provided at short notice.

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13y ago

technically muscle fibres are classified as red or white but they are the same thing

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12y ago

no, fast twitch fibers generate more force.

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Q: What is the difference between fast-twitch and slow-twitch muscle fibers?
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