Key result
The Fitbit ChargeHR accurately estimated heart rate compared to portable polysomnography with a mean difference of -0.66 bpm and an overall correlation of r=0.93.
Why the study?
The quality of heart rate data from consumer smartbands across the sleep-wake cycle is debatable, as they are rarely rigorously validated for research and clinical use.
Does the Fitbit ChargeHR accurately detect heart rate compared to portable polysomnography in healthy young adults?
Population
25 healthy young adults
Comparison
Fitbit ChargeHR pulse photoplethysmography vs portable polysomnography-derived heart rate
Design
Validation study
Follow-up
≥12 hr
Authors
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Supports Fitbit HR estimation during sleep in healthy adults; leaves open validation at higher rates and in clinical populations.
Observational (n=25)
Does the Fitbit ChargeHR accurately detect heart rate compared to portable polysomnography in healthy young adults?
Mean Difference: -0.66
The Fitbit ChargeHR provides relatively high accuracy for heart rate detection during sleep in healthy adults, though accuracy decreases at heart rates >100 bpm.
Benedetti et al. (2021) conducted an observational in Healthy (n=25). Fitbit ChargeHR vs. Portable polysomnography (pPSG) was evaluated on Heart rate estimation accuracy (MD -0.66 bpm). The Fitbit ChargeHR accurately estimated heart rate compared to portable polysomnography with a mean difference of -0.66 bpm and an overall correlation of r=0.93.
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