How much heart rate accuracy do we need for our own specialized application?

Last Updated on July 30, 2023 by pg@petergamma.org

Highly accurate 3 lead ECG devices for scientific studies are very expensive. These are already optimized for accuracy. But how much sense does a discussion about sports heart rate monitor accuracy make? Who uses those to make calculations? DC Rainmaker and 5K Runner make by eye comparison to study the accuracy, and the Quantitative Scientist Rob ter Horst tests 100 smartwatches for their accuracy, but delivers no quantitative or statistical data which can be reproduced.

To make a big effort to solve a problem, is there not first a heart rate monitor required which is also interesting for scientific studies? And if one of those optical heart rate monitors tested by Rob ter Horst or discussed in our journal would be interesting for scientists, would scientists not have developed one already for scientific purposes with the necessary validation studies an sell those to everyone?