Last Updated on July 13, 2023 by pg@petergamma.org
Scientists from the Cleveland Clinic in Ohio tested before the accuracy of sports watches:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732081/
They additionally wrote a paper about the “the Accuracy of Apple 4 for Detection of Atrial Fibrillation”:
https://www.ahajournals.org/doi/full/10.1161/CIRCULATIONAHA.119.044126
But no new other papers about sports watch accuracy is available from the Cleveland Clinic in Ohio. Was it not worth for them to test newer watches?
One problem we found as we studied the subject are ECG motion artifacts at higher speeds, We do not have high quality reference devices to test sports watch accuracy at higher speeds. We still don’t know of anybody who has solved the problem of ECG motion artifacts to this date. And we do not know of anybody who does systematic scientific signal quality studies of all optical and ECG sports heart rate monitors which are available on a regular basis.