Accuracy Assessment of Oura Ring Nocturnal Heart Rate and Heart Rate Variability in Comparison With Electrocardiography in Time and Frequency Domains: Comprehensive Analysis
Journal of Medical Internet Research2021Vol. 24(1), pp. e27487–e27487
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Rui Cao, Iman Azimi, Fatemeh Sarhaddi, Hannakaisa Niela‐Vilén, Anna Axelin, Pasi Liljeberg, Amir M. Rahmani
Abstract
The Oura Ring could accurately measure nocturnal HR and RMSSD in both the 5-minute and average-per-night tests. It provided acceptable nocturnal AVNN, pNN50, HF, and SDNN accuracy in the average-per-night test but not in the 5-minute test. In contrast, the LF and LF:HF ratio of the ring had high error rates in both tests.
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