Some notes on doing HRV readings with the Elite HRV app and a Scosche Rhythm24:
- Elite HRV can’t find the Scosche Rhythm24 unless I briefly open the Rhythm Sync app first (without connecting to the device).
- It is possible to get readings that are too high even when the app claims that no artifacts were detected and that the signal quality was good (the HRV4Training app has the same issue). The problem is obvious when looking at the RR-interval chart (which should look like rolling hills, not jagged peaks, see the screenshots below).
- To get good readings, the strap should be tight on the lower arm, the arm should rest on a hard surface, out of direct sunlight, and covered with a dark piece of cloth (if not wearing long sleeves).
