@mr-quality said in HRV:
@szaboat74 the measurements of Suunto are wrong. I checked in parallel the measurements via Garmin and Polar. The results are round about 10 ms higher as Suunto is showing. It seems to be that they in general have an issue with there sensors. HR at the wrist is also faulty especially during exercises. It is very sobering in itself when this is the case with a current model like the Race.
Comparing an AppleWatch with Suunto I get very similar readings, the trend is always the same even if the numbers are slightly different.