Activity
VO₂ Max
LOINC bllod:vo2-max · mL/kg/min
What it is
VO2 max is the maximum amount of oxygen your body can use during intense exercise. It is a key measure of aerobic (cardio) fitness.
Why it matters
A higher VO2 max reflects better cardiorespiratory fitness, which is strongly linked to long-term health and longevity.
What high values can mean
A higher value reflects strong aerobic fitness, generally considered very favourable.
What low values can mean
A lower value reflects lower aerobic fitness, which can often be improved with training.
How to improve it
Regular aerobic exercise, including some higher-intensity intervals, gradually raises VO2 max.
Food & lifestyle
Consistent cardio, interval training and overall activity improve aerobic fitness over weeks to months.
Preparing for the test
Often estimated by a wearable from heart rate and pace, or measured in a lab test; estimates vary by device.
When to talk to a doctor
VO2 max is a fitness metric, not a diagnosis; check with a clinician before starting intense exercise if you have heart concerns.
Related markers
Sources
- American Heart Association
- NIH (NCBI)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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