Validation of nocturnal resting heart rate and heart rate variability in consumer wearables
This peer-reviewed validation study evaluated the accuracy of tracking nocturnal resting heart rate (RHR) and heart rate variability (HRV) across five popular consumer wearable devices against a gold-standard electrocardiogram (ECG) reference.
Conducting longitudinal monitoring over 536 cumulative nights of sleep, researchers tracked metrics to establish rigorous performance benchmarks. The findings demonstrate that interdevice accuracy varies significantly, with Oura Ring Gen3 and Oura Ring 4 achieving the highest statistical concordance and lowest absolute percentage error for both RHR and HRV metrics.
“As RHR and HRV are important physiological vital signs that provide insight into general health, recovery, and sleep performance, it is vital to assess the validity and reliability of the wearable sensors reporting these data.”
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