VO2 Max Testing Guide
Compare DexaFit, Fitnescity, Garmin Venu 4 and Apple Watch Series 11 for VO2 max testing or cardio-fitness estimates.
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Cardio & VO2 Max
Improve VO2 Max After 60
After 60, aerobic training remains effective. A 41-trial synthesis estimated a 3.78 mL/kg/min gain; newer trials show no universally superior intensity.
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Improve VO2 Max After 50
Aerobic capacity declines faster later in life, but a standardized 20-week program produced similar percentage gains across adults ages 17 to 65.
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Improve VO2 Max After 40
VO2 max stays trainable after 40. In a small two-year trial, healthy sedentary adults averaging 53 improved it by 18% with progressive aerobic training.
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Good VO2 Max by Age
In Norway's HUNT3 study, average VO2 max fell about 3.5 mL/kg/min per decade: men 54 in their 20s to 35 past 70, women 43 to 28. US lab…
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How to Test VO2 Max
Breath-gas testing directly measures oxygen uptake for about $150–$315 at two US labs. Field tests and watches estimate it with more uncertainty.
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VO2 Max and Longevity: Does a Higher VO2 Max Mean a Longer Life?
Fitter people die less often in large studies, but no trial shows raising VO2 max adds years. What the number measures, and what it can't predict.
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