Objective To examine agreement between multiple commercial activity monitors (CAMs) and
a validated actigraph to measure sleep. Methods Thirty adults without sleep disorders wore …

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 …

Actigraphy has become a common method of measuring sleep due to its non-invasive, cost-
effective nature. An actigraph (Readiband™) that utilizes automatic scoring algorithms has …

We validated a Fitbit sleep tracking device against typical research-use actigraphy across
four nights on 38 young adults. Fitbit devices overestimated sleep and were less sensitive to …

Demonstrating inter-device reliability is essential to use devices interchangeably, and
accurately integrate, interpret, or compare data from different actigraphs. Despite this, there …

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 …

Background Humans spend more than one-fourth of their life sleeping, and sleep quality has
been significantly linked to health. However, the objective examination of ambulatory sleep …

There is a growing need for free-living monitoring of the full 24 h spectrum of behaviors with
a single or integrated set of sensors. The validity of field standard wearable monitors in …

Introduction: This study examined the equivalency of sleep estimates from Axivity,
GENEActiv, and ActiGraph accelerometers worn on the nondominant and dominant wrists …