VO2Max, or maximal oxygen uptake, is the measurement of the maximum amount of oxygen a person can utilize during intense exercise. It is a common measurement used to establish the aerobic endurance of an athlete prior to or during the course of training. When testing your VO2Max, you will learn your optimal training zones to better guide your workouts. With summer in full swing, many athletes are preparing for the fall race season. If you have ever thought about having your VO2Max tested, now is the time to get your numbers in order to fine-tune your training.