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ipn [44]
3 years ago
9

A marathoner uses mostly _____twitch fibers.

Health
1 answer:
Sauron [17]3 years ago
7 0

Explanation:

Fast Twitch Muscle Fiber Types. The two types of skeletal muscle fibers are slow-twitch (type I) and fast-twitch (type II). Slow-twitch muscle fibers support long distance endurance activities like marathon running, while fast-twitch muscle fibers support quick, powerful movements such as sprinting or weightlifting.

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