When VO2max isn’t max

February 6th, 2012

This week’s Jockology column in the Globe and Mail takes a closer look at the recent study that produced “supermax” VO2max values by changing the test protocol, suggesting that the VO2max plateau isn’t really a physical maximum:

Eventually, your muscles can no longer get enough oxygen. It’s an immutable physical limit that kicks in during any sustained physical exercise and tells your body: “This fast – but no faster.”

At least, that’s the theory we’ve been working with since 1923. But a controversial new study from researchers on three continents suggests that the famous “VO2max” – the maximum amount of oxygen that you’re able to deliver to your muscles during hard exercise – isn’t really a maximum at all. Your heart and lungs don’t call the shots after all; your brain does. […]

As usual, Trish McAlaster has a nice graphic that illustrates what’s going on with the new test: