About 30 min
What’s VO2max?
VO2max is coming into focus — but the research settled it a decade ago. See how public and scientific interest actually moved, how your watch estimates it, then work through the 2002 study that found how far a man could walk predicted whether he would still be alive better than cholesterol, blood pressure or smoking.
Coming soon
How VO2max is actually measured
What happens in a laboratory test, why the mask matters, what a plateau in oxygen uptake is, and why an estimated value and a measured one are not the same number.