Under strenuous aerobic exercise, which of the following would be true for skeletal muscle?
A) only glucose will serve as a fuel source
B) only fatty acids will serve as a fuel source
C) both glucose and fatty acids will be used as fuel with the use of glucose increasing with the intensity of the exercise
D) both glucose and fatty acids will be used as fuel with the use of fatty acids increasing with the intensity of the exercise
E) none of the above

Question

Quizplus · Accepted Answer

During strenuous aerobic exercise, skeletal muscle uses both glucose and fatty acids as fuel sources. The use of glucose increases with the intensity of the exercise because high-intensity activities require quick energy, which glucose can provide more rapidly than fatty acids.

Under Strenuous Aerobic Exercise, Which of the Following Would Be