Last Updated on December 10, 2023 by pg@petergamma.org
3 channel ECG devices are according to the papers mentioned here:
more accurate than Apple watches, but Apple watches are more comfortable to wear than ECG devices.
We did not study the architecture of the Firstbeat bodyguard in detail, but is the device not a modification of a sports chest strap to make the device more comforable to wear for 24 * 7 activities?
The Firstbeat body guard is also validated in a paper, but the paper is only published as a white paper on the website of firstbeat.
https://assets.firstbeat.com/firstbeat/uploads/2015/10/white_paper_bodyguard2_final.pdf
The firstbeat bodyguard is also used in scientific papers:
https://scholar.google.de/scholar?hl=de&as_sdt=0%2C5&q=firstbeat+bodyguard&oq=f
But we do not know of clinic applications which use the firstbeat bodygoard and we do not know of clinical applications which use Apple watches as well.
The firstbeat bodyguard can be used instead of a sports chest strap for 24 * 7 applications, chest straps are not suitable for this purpose. 3 channel ECG devices can be used for 24 * 7 applications but Apple watches would be more comfortable to wear than 3 channel ECG devices for this purpose. This is an advantage of Apple watches over 3 channel ECG devices which makes those interesting for scientists.