Utility of the Fitbit Flex to evaluate sleep in major depressive disorder: a comparison against polysomnography and wrist-worn actigraphy

JD Cook, ML Prairie, DT Plante - Journal of affective disorders, 2017 - Elsevier
Background Sleep disturbance is a common and important component of affective illness.
Fitness activity trackers are emerging as alternative means to estimate sleep in psychiatric …

Automatic-Scoring Actigraph compares favourably to a manually-scored actigraph for Sleep Measurement in healthy adults

DT Edgar, CM Beaven, ND Gill, JL Zaslona… - Sleep …, 2023 - thieme-connect.com
Introduction Actigraphy has been used widely in sleep research due to its non-invasive, cost-
effective ability to monitor sleep. Traditionally, manually-scored actigraphy has been …

40 years of actigraphy in sleep medicine and current state of the art algorithms

MR Patterson, AAS Nunes, D Gerstel, R Pilkar… - NPJ Digital …, 2023 - nature.com
For the last 40 years, actigraphy or wearable accelerometry has provided an objective, low-
burden and ecologically valid approach to assess real-world sleep and circadian patterns …

Equivalency of sleep estimates: comparison of three research-grade accelerometers

T Plekhanova, AV Rowlands… - Journal for the …, 2020 - journals.humankinetics.com
Introduction: This study examined the equivalency of sleep estimates from Axivity,
GENEActiv, and ActiGraph accelerometers worn on the nondominant and dominant wrists …

Reproducibility of a standardized actigraphy scoring algorithm for sleep in a US Hispanic/Latino population

SR Patel, J Weng, M Rueschman, KA Dudley… - Sleep, 2015 - academic.oup.com
Abstract Study Objectives: While actigraphy is considered objective, the process of setting
rest intervals to calculate sleep variables is subjective. We sought to evaluate the …

Sleep assessment by means of a wrist actigraphy-based algorithm: agreement with polysomnography in an ambulatory study on older adults

G Regalia, G Gerboni, M Migliorini, M Lai… - Chronobiology …, 2021 - Taylor & Francis
The purpose of the present work is to examine, on a clinically diverse population of older
adults (N= 46) sleeping at home, the performance of two actigraphy-based sleep tracking …

Validity, potential clinical utility, and comparison of consumer and research‐grade activity trackers in Insomnia Disorder I: In‐lab validation against polysomnography

P Kahawage, R Jumabhoy, K Hamill… - Journal of sleep …, 2020 - Wiley Online Library
Consumer activity trackers claiming to measure sleep/wake patterns are ubiquitous within
clinical and consumer settings. However, validation of these devices in sleep disorder …

Issues of validity in actigraphic sleep assessment

WW Tryon - Sleep, 2004 - academic.oup.com
Abstract Objectives: The Standards of Practice Committee of the American Sleep Disorders
Association has supported the use of actigraphy in the assessment of sleep disorders …

Validity of two consumer multisport activity tracker and one accelerometer against polysomnography for measuring sleep parameters and vital data in a laboratory …

M Budig, R Stoohs, M Keiner - Sensors, 2022 - mdpi.com
Two commercial multisport activity trackers (Garmin Forerunner 945 and Polar Ignite) and
the accelerometer ActiGraph GT9X were evaluated in measuring vital data, sleep stages …

The development and accuracy of the THIM wearable device for estimating sleep and wakefulness

H Scott, N Lovato, L Lack - Nature and Science of Sleep, 2021 - Taylor & Francis
Introduction THIM is a new wearable device worn on the finger that can passively monitor
sleep and wakefulness overnight using actigraphy. This article showcases the development …