A 24-year-old healthy lady participates in a research study on exercise. The source of skeletal muscle ATP during exercise is determined in the study using a variety of radiolabeled substances. The participants are given food that is heavy in carbohydrates and instructed to run quickly on a treadmill. Which of the following is the most likely source of the red curve on the graph below, which represents ATP?

Question

Quizplus · Accepted Answer

Eductional Objective: High levels of ATP are required during intense activity, and the major way of producing ATP changes depending on how long you exercise for. At the start of exercise, the main source of ATP is the phosphocreatine shuttle, which is thereafter followed by anaerobic glycolysis and oxidative phosphorylation.

A 24-Year-Old Healthy Lady Participates in a Research Study on Exercise