CanFitPro Personal Training Specialist Practice Test 2026 - Free Personal Training Specialist Practice Questions and Study Guide

The central component of VO2max refers to the heart's ability to distribute oxygen-rich blood to the working muscles during exercise. While the other options may play a role in overall fitness and physical performance, they do not specifically address the central component of VO2max. Option A focuses on the muscles' efficiency in using oxygen, but it does not consider the heart's role in delivering oxygen to the muscles. Option C mentions the lungs' capacity to exchange gases, but it does not directly address the role of the heart. Option D refers to the body's ability to cool down after exercise, which is important but not specifically related to VO2max. Overall, option B is the best choice because it directly addresses the central component of VO2max.