During relatively high intensity exercise lasting less than one hour,the primary fuel for muscular work is
A)blood glucose.
B)plasma FFA.
C)muscle glycogen.
D)amino acids.

Question

Quizplus · Accepted Answer

During high intensity exercise lasting less than one hour, the primary fuel for muscular work is muscle glycogen. This is because the body needs a readily available source of energy to fuel the muscles during intense activity, and muscle glycogen provides just that. Blood glucose and plasma FFA are used primarily during longer duration exercise, while amino acids are primarily used for muscle repair and growth, not energy.

During Relatively High Intensity Exercise Lasting Less Than One Hour,the