When athletes work out to improve their stamina, one of the goals is to enhance their
A) fast-twitch muscle fibers.
B) muscle spindles.
C) slow-twitch muscle fibers.
D) neural motor plans.

Question

Quizplus · Accepted Answer

Stamina generally refers to the ability to sustain physical activity for a longer period of time, which relies on the function of slow-twitch muscle fibers. These fibers are rich in mitochondria, which produce energy aerobically, allowing for prolonged activity. Fast-twitch muscle fibers are responsible for quick, explosive movements and are not as important for stamina. Muscle spindles and neural motor plans are both involved in muscle control, but do not directly impact stamina.

When Athletes Work Out to Improve Their Stamina, One of the Goals