The top long distance runners probably have _______ proportion of slow muscle fibers in their leg muscles.

Question

Quizplus · Accepted Answer

Top long distance runners tend to have a higher proportion of slow-twitch muscle fibers (Type I fibers) in their leg muscles, which are more efficient at using oxygen to generate more fuel (known as ATP) for continuous, extended muscle contractions over a long time. This makes them better suited for endurance activities compared to fast-twitch fibers, which are more powerful and fatigue faster.

The Top Long Distance Runners Probably Have _______ Proportion of Slow