If a cyclist started a race and rode at a near maximum speed, which of the following fuel sources would be used up first?
A) fat in the muscle cells
B) muscle glycogen
C) liver glycogen
D) muscle creatine-phosphate
E) all of these would be exhausted simultaneously

Question

Quizplus · Accepted Answer

Muscle creatine-phosphate is used for immediate energy at the onset of high-intensity exercise and is depleted quickly, often within the first few seconds to minutes, before the body relies more heavily on glycogen and fat.

If a Cyclist Started a Race and Rode at a near Maximum