What Does VO2 MAX Mean?
VO2 Max is a Measure of Fitness
VO2 Max (VO₂ max) is the maximum amount of oxygen your body can utilize during intense exercise. It's essentially a snapshot of your engine's efficiency.
Maximal Oxygen Uptake

VO2 Max is commonly mentioned in fitness apps, smartwatch stats, and training discussions as an indicator of cardiovascular fitness. It breaks down as:
- V: Volume.
- O2: Oxygen.
- Max: Maximum limit.
A Common Fitness Stat
VO2 Max is a common measure of physical fitness.
Summary of Key Points
| VO2 Max | |
|---|---|
| Definition: | Maximal Oxygen Consumption |
| Type: | Abbreviation |
| Guessability: | ![]() 5: Extremely difficult to guess |
| Typical Users: | ![]() Adults and Teenagers |
An Academic Look at VO2 MAX

VO2 MAX is more correctly written as VO₂ max. It is a scientific shorthand term that combines physiological notation with an informal truncation (shortening) that breaks down as follows:
- V = volume.
- O₂ = oxygen (chemical formula, with the 2 as a subscript).
- Max is just a shortened form of "maximum."
Example of VO2 Max Used in a Text
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