Rob cites a Paper which is partly funded by Polar: RR interval signal quality of a heart rate monitor and an ECG Holter at rest and during exercise https://pubmed.ncbi.nlm.nih.gov/31004219 Last author of the paper is Dr. Thomas Wyss deputy Rector of the Swiss Federal Institute of Sport Magglingen SFISM with a PhD. in Physiology https://www.linkedin.com/in/thomas-wyss-6b6061166/?originalSubdomain=ch … Continue reading 1580. Is Rob ter Horst forced by sports watch companies to use only the Polar H10 and to cite only certain papers which are funded by sports watch companies if he wants to receive smartwatches for testing for free?