How can we trust in scientific studies about the accuracy of consumer grade HRMs which are partly funded by sports watch companies or by other intransparent funds? Posted bypg@petergamma.org April 11, 2024April 11, 2024 Last Updated on April 11, 2024 by pg@petergamma.org 1640. How can we trust in scientific studies about the accuracy of consumer grade HRMs which are partly funded by sports watch companies or by other intransparent funds?