Why PiEEG from Elecrow for 350 USD with HeartPy is more accurate than the Polar H10 & the Apple watch 9 for runs on a treadmill up to 15 km/h

This is the hypothesis of Peter Gamma from www.petergamma.org. He is looking for an expert such as Milind Desai, MD, MBA from the Cleveland Clinic in Ohio: https://my.clevelandclinic.org/staff/6670-milind-desai Or Peter Charlton, Biomedical Engineer specialising in signal processing for wearables at the University of Cambridge: https://www.linkedin.com/in/peterhcharlton/?originalSubdomain=uk Or Thomas Wyss, PhD. Prorector of the Swiss Federal Institute …