Since a few weeks I no longer get VO2 max measurements from my walks.
I have read the support articles where it says you need
- Running Activity must be 10 minutes or longer in length
- Activity must be recorded outdoors with a GPS signal
- Heart rate data from either a built-in optical heart rate sensor or from a chest strap
- Heart rate must be elevated to at least 70% of your maximum heart rate for at least 10 minutes continuously
https://support.garmin.com/en-US/?faq=lWqSVlq3w76z5WoihLy5f8
But I have recordered multiple walks without use of GPS, and heart rate below 70% (but longer than 10 minutes), and yet a VO2 max was being recorded. So why would the vivosmart suddenly stop recording VO2 max? (Or should I rephrase my question and ask why VO2 max was being recorded in the first place for such gentle walks....)