Compared to the average weekend jogger, a world class marathon runner probably has a higher percentage of which kind of fibers in his legs?
A) slow-twitch
B) fast-twitch
C) smooth muscle
D) white muscle

Question

Quizplus · Accepted Answer

A world class marathon runner likely has a higher percentage of slow-twitch muscle fibers in their legs because these fibers are better suited for endurance activities like long distance running. Fast-twitch fibers are better suited for explosive activities like sprinting. Smooth muscle and white muscle are not relevant to this question as they are types of muscle found in other parts of the body, not the legs.

Compared to the Average Weekend Jogger, a World Class Marathon