Question

______ twitch muscle fibres have enabled long-endurance feats such as distance running.

Answer 1

The answer is A. Slow twitch.

People have two general types of skeletal muscle fibers: slow-twitch (type I) and fast-twitch (type II). Slow-twitch muscles help enable long-endurance feats such as distance running, while fast-twitch muscles fatigue faster but are used in powerful bursts of movements like sprinting.

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