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VO2max and fitness age correlation

majkim6
over 4 years ago

Do you know how garmin calculates fitness age based on VO2max? For two of my last runs (Wed and Fri) I got the same VO2max but different fitness age (luckily the age goes down ;) so I was wondering how this is estimated..

Wed:

Fri:

  • 0 over 4 years ago

    Garmin uses the technology developed by the Finnish company FirstBeat, so you can read the details about the fitness age on their website:

  • 0 over 4 years ago in reply to trux

    Great article, thank you.. But how can it explain that the same vo2max gives different fitness age? My question is rather related to this, because I thought that this correlation is linear, x vo2max -> y fitness age, but it looks more complicated..

  • 0 over 4 years ago in reply to majkim6
    majkim6 said:
    But how can it explain that the same vo2max gives different fitness age?

    Not sure, but possibly it is due to the rounding - both values may round to the same number, but may still differ significantly if unrounded. And if 43 is just the threshold value between two age groups, then it can happen. Several online VO₂Max/age charts that I found, would give similar results for values over and below 43 (for men). Run the VO₂Max report in Garmin Connect Web, where you can see better whether the value for both days is really identical, or differs a bit. Well, in GC Mobile you can see the VO₂Max graph too, but on the web version on a bigger screen you'll see the difference better.