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Reliable Contactless Monitoring of Heart Rate, Breathing Rate, and Breathing Disturbance During Sleep in Aging: Digital Health Technology Evaluation Study

Reliable Contactless Monitoring of Heart Rate, Breathing Rate, and Breathing Disturbance During Sleep in Aging: Digital Health Technology Evaluation Study

The WSA and Somnofy data (json format) were downloaded using the respective manufacturer’s application programming interface, while the Emfit data (CSV format) were downloaded from the manufacturer’s web interface. All the compared contactless technologies (WSA, Emfit, and Somnofy) provided breathing rate data, while only the undermattress devices (WSA and Emfit) provided heart rate data.

Kiran K G Ravindran, Ciro della Monica, Giuseppe Atzori, Damion Lambert, Hana Hassanin, Victoria Revell, Derk-Jan Dijk

JMIR Mhealth Uhealth 2024;12:e53643

Noncontact Longitudinal Respiratory Rate Measurements in Healthy Adults Using Radar-Based Sleep Monitor (Somnofy): Validation Study

Noncontact Longitudinal Respiratory Rate Measurements in Healthy Adults Using Radar-Based Sleep Monitor (Somnofy): Validation Study

Somnofy (version 0.7; Vital Things) was used in this study. Somnofy uses an impulse radio ultrawideband radar with an average sampling rate of 23.8 GHz, which, through configuration, is sampled into a 3-m–long frame of 5-cm bins updated with a frequency of approximately 17 Hz. Somnofy measures humans by emitting signals that are reflected by the human body. If the body moves, it will affect the signals that are returned to the radar.

Ståle Toften, Jonas T Kjellstadli, Ole Kristian Forstrønen Thu, Ole-Johan Ellingsen

JMIR Biomed Eng 2022;7(2):e36618