Wearable Sleep Review

🔍 A recent systematic review evaluated the performance of consumer wearables versus the gold-standard polysomnography (PSG) for sleep monitoring. The study compared three devices—Fitbit Charge 4, Garmin Vivosmart 4, and WHOOP—by assessing their accuracy in delineating sleep parameters and stages against established methods.

📊 The findings revealed that both Fitbit Charge 4 and WHOOP exhibited higher relative agreement with PSG, particularly for total sleep time and sensitivities to deep and REM sleep. Notably, WHOOP showed minimal discrepancies for total sleep time and light sleep, while Fitbit Charge 4 demonstrated the least deviation for REM sleep. However, all devices highlighted areas for improvement in the precise assessment of specific sleep stages.

💤 In conclusion, although the current generation of wearables shows promise as a feasible alternative for long-term and in-home sleep monitoring, there is a clear need for further research. Enhanced study designs with standardized protocols and larger sample sizes are recommended to advance the scientific validation and overall accuracy of these technologies.

Full Text: https://mhealth.jmir.org/2024/1/e52192