A new study in Sensors reveals the Oura Ring 3 outperforms the Apple Watch and Fitbit Sense 2 in sleep tracking, closely matching PSG standards.
The study highlighted that the Oura Ring's sleep-staging algorithm achieved a 79% agreement with polysomnography, showcasing its effectiveness in sleep classification.
Research conducted at Brigham and Women's Hospital showed Oura's accuracy and sensitivity in sleep tracking exceeded that of its competitors, particularly in wake and sleep detection.
Researchers noted: 'Oura Ring did not significantly underestimate or overestimate any of the four sleep stages, while Apple Watch overestimated light and deep sleep'.
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