I use Fenix3HR + Old Garmin footpod. It works fine!
Would like to get more info from my running workouts and also infos from heart while resting/sleeping
¹) Should I benefit from a HRM Pro Plus or/and a new footpod?
²) Is there a dedicated Garmin app/program that shows HRV etc? (Connect?)
1) I use the HRM pro with a 745 and Stryd(like the foot pod but way more information). There are lots of stats available from the HRM pro.
2) HRV depends on the watch. My 745 only does it when I run the watch app(I think the Fenix 3 HR is the same https://www.garmin.com/en-US/p/pn/010-01338-70#specs) . If you want it 24/7 then you need a later model watch.
Here are some stats from a run I did yesterday. Note vertical ratio and vertical oscillation are on the same graph. You have to chose one. The same goes for ground contact time and ground contact balance(L/R).
