Jackie begins walking on a treadmill at 4 mph. Based on your readings, you have learned that it is physiologically impossible for her to achieve a steady-state immediately upon initiation of exercise. Therefore, until she reaches a steady-state VO2 (let's say the first 2 or 3 minutes, for instance), ATP is produced via what energy systems?
a. ATP-PCr
b. Anaerobic Glycolysis
c. Aerobic Metabolism
both a and b
all of the above.