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Inaccurate VO2 Max reading on Apple Watch Series 7

MY VO2 max reading on my Apple watch is significantly lower than when I test it on other equipment. Any suggestions as to why this is happening


[Re-Titled by Moderator]

Posted on Oct 20, 2022 8:35 PM

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Question marked as Top-ranking reply

Posted on Oct 21, 2022 8:39 AM

VO2 max is at best an estimate-- the watch does the best it can do with what it has-- probably as good as or better than other similar wearable devices. But it, like others, is an estimate-- be careful about taking it too seriously. It's probably best used as a way of seeing if anything has recently changed. (That's anything about your body, not if the change is which watch you used or the algorithm to calculate it!)


Check here:


Track your cardio fitness levels - Apple Support


In part it says


To estimate your cardio fitness level, your Apple Watch also takes into account your:

  • Age
  • Sex
  • Weight
  • Height
  • Medications that might affect your heart rate

It can take at least 24 hours of wearing your Apple Watch, followed by several workouts* and passive measurements with your Apple Watch before you receive an initial estimate.


So you need to enter that stuff into your profile.

1 reply
Question marked as Top-ranking reply

Oct 21, 2022 8:39 AM in response to vjfisher306

VO2 max is at best an estimate-- the watch does the best it can do with what it has-- probably as good as or better than other similar wearable devices. But it, like others, is an estimate-- be careful about taking it too seriously. It's probably best used as a way of seeing if anything has recently changed. (That's anything about your body, not if the change is which watch you used or the algorithm to calculate it!)


Check here:


Track your cardio fitness levels - Apple Support


In part it says


To estimate your cardio fitness level, your Apple Watch also takes into account your:

  • Age
  • Sex
  • Weight
  • Height
  • Medications that might affect your heart rate

It can take at least 24 hours of wearing your Apple Watch, followed by several workouts* and passive measurements with your Apple Watch before you receive an initial estimate.


So you need to enter that stuff into your profile.

Inaccurate VO2 Max reading on Apple Watch Series 7

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