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Treadmill running and Fitness (VO2)

Former Member over 5 years ago

For last 2 weeks, I have started running on treadmill rather than outside. I noticed that Garmin stopped showing me fitness data (VO2). is there is any connection between two ? how can restart my Fitness part work on the app ?

0 trux over 5 years ago

The VO₂Max calculation needs the GPS data to better estimate the effort, hence you'll have to do some outdoor runs. Read more about the way VO₂Max works in Garmin devices in the document What is the VO2 Max. Estimate Feature on My Garmin Device?

From the document:

Running Activity must be 10 minutes or longer in length (vivosport requires up to 15 minutes 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