nordic walking

They just added Snoeshoeing, which seems pretty much the same. Or use Walking. Why another activity would be necessary ?

Nordic walking has a completely different arm movement (with sticks and hand opening during each step). Normal walking activities in the Fenix are very likely to give completely wrong heart rates. 

Woody said:

Normal walking activities in the Fenix are very likely to give completely wrong heart rates. 

From WHR yes but for something like Nordic Walking it would definitely be better to wear a strap anyway.

Why do you assume that the activity profile would affect the measured hear rate? I don't think that there is some fancy sports-profile related correction of the OHR-sensor reading going on. The sensor just measures the HR, that's it. That's why wrist-based OHR works good for some activities (steady running or cycling), and less good for others, basically all activities with short spikes of high HR (shorts interval sprints, weight lifting, cross fit). 

Step count.

Would be nice if it were just Nordic Walking. I often see that even when i am just using the hiking profile i can observe that the WHR is at some point snapping to a nearly double heart rate than i actually have.

The sensor does measure the HR. It measures the pulse at your wrist. Each body (an especially arm) movement can produce additional pulses or hide an actual pulse in the wrist. So i.e. when walking you get two overlayed pulse-curves, one from the HR and one from the arm movement - it is up to the software to filter that out (a thinkable solution would be to measure the arm movement to get the data for one of the curves).

I could often see that moviq did not recognize and auto-start a walking activity when i was carrying something in my left arm. And it would make sense - to recognize the correct profile for starting an moveiq-activity the watch will use the acceleration sensor data... and when this data is already there, why not using it to correct the WHR-Data?

If it were just as easy a reading out the measured wrist pulse, we wouldn't see any changes in accuracy between different software versions.

A few months ago, after sw-update to 19.20 i recognized that it was no longer possible to get an accurate WHR during indoor-rowing. I've contacted the garmin support and they told me that the problem will be fixed in the next software-release (after the release of the actual sw i did a few tests and the measured WHR was accurate). So if they were not lying, there is some software-correction implemented.

Martin868 said:

They just added Snoeshoeing, which seems pretty much the same.

Snowshoeing similar to nordic walking? What?!?