Measurement of respiratory rate using wearable devices and applications to COVID-19 detection.

Aravind Natarajan¹, Hao-Wei Su², Conor Heneghan², Leanna Blunt², Corey O'Connor², Logan Niehaus²

¹Fitbit Research, San Francisco, CA, USA. anatarajan@google.com.

²Fitbit Research, San Francisco, CA, USA.

Abstract

We show that heart rate enabled wearable devices can be used to measure respiratory rate. Respiration modulates the heart rate creating excess power in the heart rate variability at a frequency equal to the respiratory rate, a phenomenon known as respiratory sinus arrhythmia. We isolate this component from the power spectral density of the heart beat interval time series, and show that the respira…

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