VO2 Max Sample

VO2 max (Maximal Oxygen Uptake)


Maximal Oxygen Uptake (VO2 max) is a measuring tool, utilized by fitness and sports professionals, to determine an athlete's capacity to sustain exercise.


V= Volume; O2= Dioxygen molecule; Max= Maximal


Maximal oxygen uptake helps define an athlete's aerobic endurance, which is a very important tool in helping design an effective training program. VO2 max refers to the maximum amount of oxygen that an individual can utilize during intense exercise. It is measured as "milliliters of oxygen used in one minute per kilogram of body weight."


There are different methods, in determining VO2 Max. There are many protocols used on treadmills, ergometers and other exercise equipment to accurately measure VO2 max. Essentially, one must be connected to a special computer and breathe into an apparatus that analyses exhaled air. The computer will analyze oxygen and carbon dioxide, as the athlete exercises. The athlete is connected to an ergometer (treadmill) on which the workload can be adjusted or modified. Expired air may be collected and volume measured via Douglas bags, Tissot tank, or measured by a turbine ventilometer.


The test begins slowly, then increases in intensity until the athlete can no longer continue testing. The athlete's nose will be plugged, he/she will breathe through a mouthpiece, connected to the metabolic analyzer, and he/she will wear a heart-rate monitor. The computer measures the volume, as well as the percentage, of carbon dioxide and oxygen in the expired gas.