Question 1

How do I improve my VO2 max?

Accepted Answer

The most effective sessions are high-intensity intervals, typically three to five minute repetitions around 3K race pace with recovery between them. They should stay a small share of your week: without a large base of easy aerobic running underneath, you will not recover and progress stalls. One to two hard sessions per week is the ceiling for most runners.

Question 2

Is the VO2 max on my watch accurate?

Accepted Answer

Watches estimate VO2 max from the relationship between pace and heart rate. It is dependable as a trend, less so as an absolute number. A noisy wrist heart rate reading, hills or wind will all skew it. What matters is the direction of travel over several weeks, not the value on any single day.

Question 3

Can I estimate VO2 max with the Cooper test?

Accepted Answer

Yes. The Cooper test asks you to cover as much ground as possible in twelve minutes, and VO2 max is estimated as (distance in metres − 504.9) ÷ 44.73. The six-minute half-Cooper is less punishing but slightly less accurate. Estimating from a race time, as this calculator does, spares you the dedicated test altogether.

Question 4

Are VO2 max and vVO2 max the same thing?

Accepted Answer

No, but they are directly linked. vVO2 max, sometimes called velocity at VO2 max or maximal aerobic speed, is the slowest speed at which you reach your VO2 max, expressed in km/h or mph. VO2 max itself is an oxygen consumption in ml/kg/min. As a rule of thumb, VO2 max is roughly 3.5 times the maximal aerobic speed in km/h. The speed is easier to train with, because it is already a pace.

VO₂max estimation

Reference performance

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