[kashunstva]

I don’t think the 3% was an annual metric; instead they simply looked retrospectively at cohorts of subjects whose VO2 max was down by 3% or worse, stable, or increased by 3% or better. The outcome measure over a mean of 6.7 years was incident prostate Ca.

Importantly, the study says nothing about how the subjects achieved this result or whether it was an active process at all. The author’s comments and the first sentence in The Guardian overstate the actual findings. It’s reasonable to assume that purposefully pursuing a cardiovascular fitness regimen aimed at improving VO2max will reduce your prostate Ca risk but the study doesn’t address that.