Type 2 muscle fibers are generally recruited first during a muscle contraction.

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Type 1 muscle fibers (slow-twitch) are generally recruited first during a muscle contraction, followed by type 2 muscle fibers (fast-twitch) as the intensity of the contraction increases. This is because type 1 fibers are more resistant to fatigue and are better suited for endurance activities, while type 2 fibers are better suited for short bursts of intense activity.

Type 2 Muscle Fibers Are Generally Recruited First During a Muscle