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slow-twitch fiber

   Also found in: Dictionary/thesaurus, Financial, Encyclopedia, Wikipedia 0.01 sec.
slow-twitch (ST) fiber,
a muscle fiber that develops less tension more slowly than a fast-twitch fiber. The ST fiber is usually fatigue resistant and has adequate oxygen and enzyme activity. Studies indicate that world-class endurance runners apparently have high percentages of ST fibers. It is called red muscle because of the abundance of capillaries serving the fiber muscle. The muscle also contains high amounts of the protein myoglobin that functions to store oxygen inside the muscle cell. See also fast-twitch fiber.


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You need to adopt a progressive training technique, which can stimulate the growth of both the fast-twitch fibers, as well as the slow-twitch fibers in your muscles, and which can maintain all the muscles of your body in a continuous state of shock, so that a plateau stage is not arrived at easily.
Although fast-twitch muscle fibers are usually larger in size than slow-twitch, slow-twitch fibers can become up to 22% larger than fast-twitch fibers with effective endurance training.
Studies have shown that people with a predominance of slow twitch fibers in their leg muscles will likely have a higher percentage of slow-twitch fibers in their arm muscles as well.
 
 
 
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