Study Objectives: To compare sleep parameters produced by the Fitbit Charge 3 (Fitbit) and
Actigraph GT9X accelerometer (Actigraph) to polysomnography in children and adolescents …

Purpose The commercialization of sleep activity tracking devices has made it possible to
manage sleep quality at home. However, it is necessary to verify the reliability and accuracy …

Background Wearable sleep monitors are of high interest to consumers and researchers
because of their ability to provide estimation of sleep patterns in free-living conditions in a …

Study Objectives: To compare the quality and consistency in sleep measurement of a
consumer wearable device and a research-grade actigraph with polysomnography (PSG) in …

Our research aims to assess the performance of a new generation of consumer activity
trackers (Fitbit Charge 4TM: FBC) to measure sleep variables and sleep stage classifications …

Background: Performance of wrist actigraphy in assessing sleep not only depends on the
sensor technology of the actigraph hardware but also on the attributes of the interpretative …

Background Actigraphs are widely used portable wrist-worn devices that record tri-axial
accelerometry data. These data can be used to approximate amount and timing of sleep and …

Study Objectives: The aim of this study was to examine the feasibility of sleep estimation
using a device designed and marketed to measure core physical activity. Methods: Thirty …

Background: We investigate the feasibility of using an Apple Watch for sleep monitoring by
comparing its performance to the clinically validated Philips Actiwatch Spectrum Pro (the …

Purpose: To determine accuracy of activPAL Technologies' CREA algorithm to assess
bedtime, wake time, and sleep time. Methods: As part of a larger study, 104 participants …