The error means that the app can´t retrieve a HRV rmssd value from Intervals.icu wellness data.
You should first make sure that your device sends a HRV rmssd value from a morning or overnight measurement to intervals.
There are not data in RMSSD and SDNN. Any idea?
Where are you getting your HRV data from? From Garmin 945 overnight score?
Yes, my HRV data is from the overnight score
Is correct?
The ImReady4 app uses the beat-to-beat data from adevice/app to create a HRV score (using SDNN, rMSSD, etc.). I’m not sure what your Garmin sends, which @MedTechCD also posted about in response to your initial query.
My dear: My device send to intervals the HRrest in the morning. You ask me that
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In a Garmin Forum say “Garmin does not measure or provide SDNN data and instead uses rMSSD to measure HRV.”
Its true?
from: I cant view SDNN data - Forerunner 965 - Running/Multisport - Garmin Forums