Endurance activities,such as distance running,rely primarily on _________ muscles using _________ metabolism.
A)fast-twitch; aerobic
B)fast-twitch; anaerobic
C)slow-twitch; aerobic
D)slow-twitch; anaerobic

Question

Endurance activities,such as distance running,rely primarily on _________ muscles using _________ metabolism.​ 
A)fast-twitch; aerobic 
B)fast-twitch; anaerobic 
C)slow-twitch; aerobic 
D)slow-twitch; anaerobic

Quizplus · Accepted Answer

Endurance activities, such as distance running, rely primarily on slow-twitch muscles, which are well-suited for sustained physical activity. These muscles primarily use aerobic metabolism, which provides a steady supply of energy for prolonged periods of activity. Anaerobic metabolism, used by fast-twitch muscles, produces energy more rapidly but is not sustainable over long periods.

Endurance Activities,such as Distance Running,rely Primarily on _________ Muscles Using