A highly trained Olympic athlete is now performing the same exercise physiology test and does markedly better. Why is it that she is not as limited by her cardiovascular system during exercise? (select two answers).1. The highly trained athlete relies solely on anaerobic metabolism and therefore does not require as much oxygen.2. The highly trained athlete has less efficient oxygen utilization at the level of the tissues.3. The highly trained athlete has mitochondria with improved oxygen utilization.4. The highly trained athlete produces a more potent form of ATP for energy.5. The highly trained athlete is able to deliver more oxygen to her tissues.
