Three discrete types of muscle fibers are identified on the basis of their fuel supply,oxygen supply,and tension.Which of the following athletic endeavors best represents the use of slow-twitch fibers?
A)A sprint by an Olympic runner
B)Swinging a baseball bat
C)Lifting weights
D)Mountain climbing

Question

Quizplus · Accepted Answer

Slow-twitch muscle fibers are more efficient at using oxygen to generate more fuel (in the form of ATP) for continuous, extended muscle contractions over a long time. They are thus best suited for endurance activities like mountain climbing, where sustained effort is required.

Three Discrete Types of Muscle Fibers Are Identified on the Basis