Cited by 45Sleep and related disordersContext-Aware Activity Recognition SystemsPhysical Activity and Health

Reliability of commercially available sleep and activity trackers with manual switch-to-sleep mode activation in free-living healthy individuals

Gruwez, Alexia, Libert, Walter, Ameye, Lieveke, Bruyneel, Marie·2017·International Journal of Medical Informatics

Abstract

Introduction Wearable health devices have become trendy among consumers, but it is not known whether they accurately measure sleep and physical activity parameters. To address this question, we have studied the measured data of two consumer-level activity monitors (Up Move Jawbone® (U) and Withings Pulse 02® (W)) and compared it with reference methods for sleep and activity recordings, namely the Bodymedia SenseWear Pro Armband® actigraph (SWA) and home-polysomnography (H-PSG).Methods Twenty healthy patients were assessed at home, during sleep, with the four devices. An additional 24-h period of recording was then planned during which they wore the 2 trackers and the SWA. Physical activity and sleep parameters obtained with the 4 devices were analyzed.Results Significant correlations with H-PSG were obtained for total sleep time (TST) for all the devices: r=0.48 for W (p=0.04), r=0.63 for U (p=0.002), r=0.7 for SWA (p=0.0003). The best coefficient was obtained with SWA. Significant correlations were also obtained for time in bed (TIB) for U and SWA vs PSG (r=0.79 and r=0.76, p<0.0001 for both) but not for W (r=0.45, p=0.07). No significant correlations were obtained for deep sleep, light sleep, and sleep efficiency (SE) measurements with W, U and SWA. Sleep latency (SL) correlated with H-PSG only when measured against SWA (r=0.5, p=0.02). Physical activity assessment revealed significant correlations for U and W with SWA for step count (both r=0.95 and p<0.0001) and active energy expenditure (EE) (r=0.65 and 0.54; p=0.0006 and p<0.0001). Total EE was also correctly estimated (r=0.75 and 0.52; p<0.0001 and p=0.001).Conclusion Sleep and activity monitors are only able to produce a limited set of reliable measurements, such as TST, step count, and active EE, with a preference for U which performs globally better. Despite the manual activation to sleep mode, U and W were not suitable for giving correct data such as sleep architecture, SE, and SL. In the future, to enhance accuracy of such monitors, researchers and providers have to collaborate to write algorithms based reliably on sleep physiology. It could avoid misleading the consumer.

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Crossref · 10.1016/j.ijmedinf.2017.03.008

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Authors
Gruwez, A., Libert, W., Ameye, L., & Bruyneel, M.
Affiliations
  • Centre Hospitalier Universitaire de Saint-Pierre (BE)
  • Institut Jules Bordet (BE)
Corresponding author
Bruyneel, Marie
Venue
International Journal of Medical Informatics
Publisher
Elsevier BV
Published
2017-06
Volume
102
Pages
87-92
ISSN
1386-5056 (ISSN-L)
OpenAlex
W2597555856
Cited by
45
References
21
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 2 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 14 · 2018: 5 · 2017: 1
FWCI
9.62
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Medical Informatics (publishedVersion)
  • PubMed (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
Keywords
wearable activity trackers, sleep trackers, device reliability, actigraphy, home polysomnography, total sleep time, time in bed, sleep latency, step count, energy expenditure, consumer health devices, home sleep monitoring
MeSH terms
Fitness Trackers, Adolescent, Adult, Algorithms, Energy Metabolism, Female, Humans, Male, Prospective Studies, Sleep, Reproducibility of Results, Polysomnography, Monitoring, Ambulatory, Young Adult

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