Question

multiple choice question
muscle fibers that utilize aerobic cellular reproduction and can contract fairly quickly for use in activities requiring moderate strength, such as walking or jogging, are called

intermediate - twitch fibers
slow - twitch fibers
fast - twitch fibers

Explanation:

Slow - twitch fibers rely on aerobic respiration and are used for endurance - type activities like walking and jogging. Fast - twitch fibers are for quick, high - intensity bursts. There is no such thing as intermediate - twitch fibers in standard muscle fiber classification.

Answer:

B. slow - twitch fibers