Synergy Fitness Training

VO2 Max Testing

VO2 Max testing involves a graded exercise test on a Computrainer or Treadmill. The test starts at a very easy level and increases intensity in one minute stages until the subject cannot continue. The subject wears a face mask which is connected to the metabolic analyzer, and he/she will wear a heart-rate monitor. The analyzer measures the volume as well as the percentage of carbon dioxide and oxygen in the expired gas.

Our VO2 testing fee is $150.

From this data, we are able to calculate:


Aerobic threshold is the intensity or heart-rate at which an individual burns the most fat. Using fat for fuel, more oxygen is required to release a given amount of energy than when carbohydrate is the main fuel. This means that at low intensities, when plenty of oxygen is available to the muscle, fat is the preferred fuel. As intensity increases, at some point the cardiovascular system will not be able to transport proportionally more oxygen the muscles. This is the aerobic threshold. Above this point, increased intensity will reduce fat burning.




Known as the red-line to endurance athletes, this threshold is the highest intensity, as measured by heart rate, at which the body can remove lactic acid as quickly as it is produced. Just below anaerobic threshold (AT), an athlete is working hard, but feels no burning in the muscles and is breathing heavily, but controlled. Above AT, lactic acid is building up in the muscles and will cause premature fatigue. Knowing one’s threshold allows one to achieve a very high level of cardiovascular conditioning without the discomfort and muscle damage of lactic acid buildup.




For those who take the test to completion (so that we are able to determine VO2 Max), VO2 Max is the volume of oxygen the body uses during one minute of maximal exercise. Expressed as liters of oxygen per minute or milliliters of oxygen per kilogram of bodyweight per minute, this data tells your potential for endurance athletics. While anaerobic threshold is the best predictor of current endurance performance, VO2 Max indicates the potential of an athlete after several years of systematic, structured training.