Last Updated on February 8, 2023 by pg@petergamma.org
We suppose that respiration rate on Garmin Fenix 6 on or higher is based on respiratory rate estimation. Respiration can also be found on Garmin Venu watches. For Garmin Venu watches, the watches use PPG heart rate, the Garmin Fenix 6 from a Garmin chest strap with ECG. Garmin says, from the Venu, respiration rate can only be used at rest, and from Fenix 6 during activity. But both devices are inaccurate, and we suppose that they are not calibrated. The algorithms for respiration rate are from Fistbeat. But did Firstbeat develop these algorithms? They remind strongly to the respiratory rate estimation project from Peter Charlton.
The second device which we know is respiration rate estimation from a Polar H10 chest strap in a Sensors paper from a group of the Swiss Federal Institute of Technology in Lausanne. The accuracy is in the range of sport sensor accuracy.
These two device which we know are sports sensor devices.