Last Updated on February 1, 2023 by pg@petergamma.org
A PLOS ONE paper concluded, that the Polar OH1 can be used instead of an ECG:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288
but used as strange protocol for it:
The used a very expensive ECG device or more than 50 000 USD. The institute who did the tests is not a sports institute. Why does it then sports sensor testing? Was it an evaluation for other applications? We do not know of anyone who uses a Polar OH1 instead of an ECG device.