What does VO2 max represent in physical fitness?

VO2 max is a crucial indicator of cardiovascular fitness and represents the maximum rate at which an individual can take in, transport, and utilize oxygen during intense exercise. This measurement reflects the efficiency of the body’s cardiovascular and respiratory systems during physical activity. A higher VO2 max indicates a greater capacity to perform sustained aerobic activities.

Assessing VO2 max is essential for athletes and individuals looking to improve endurance because it provides insight into how well one's body can function under aerobic stress. It is often measured in milliliters of oxygen used per kilogram of body weight per minute (ml/kg/min), making it a relative measure of fitness. As individuals train and enhance their aerobic capacity, their VO2 max tends to improve, indicating better overall fitness levels.