Last Updated on July 22, 2022 by pg@petergamma.org We agree with Rob ter Horst. PhD: that Holder ECG devices: https://en.wikipedia.org/wiki/Holter_monitor are not the best choice to validate the accuracy of consumer grade heart rate monitors. But Holder ECG devices are (according to Wikipedia) suitable to monitor the heart rate of canine: https://en.wikipedia.org/wiki/File:Holter_monitor_on_canine.jpg foxes, wolves, jackals, … Continue reading Holter ECG devices for scientific studies?