Cargando…

Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research

Light is a variable of key interest in circadian rhythms research, commonly measured using wrist-worn sensors. The GENEActiv Original is a cost-effective and practical option for assessing light in ambulatory settings. With increasing research on health and well-being incorporating sleep and circadi...

Descripción completa

Detalles Bibliográficos
Autores principales: Stone, Julia E., McGlashan, Elise M., Facer-Childs, Elise R., Cain, Sean W., Phillips, Andrew J. K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7445795/
https://www.ncbi.nlm.nih.gov/pubmed/33089197
http://dx.doi.org/10.3390/clockssleep2020012
_version_ 1783574051249192960
author Stone, Julia E.
McGlashan, Elise M.
Facer-Childs, Elise R.
Cain, Sean W.
Phillips, Andrew J. K.
author_facet Stone, Julia E.
McGlashan, Elise M.
Facer-Childs, Elise R.
Cain, Sean W.
Phillips, Andrew J. K.
author_sort Stone, Julia E.
collection PubMed
description Light is a variable of key interest in circadian rhythms research, commonly measured using wrist-worn sensors. The GENEActiv Original is a cost-effective and practical option for assessing light in ambulatory settings. With increasing research on health and well-being incorporating sleep and circadian factors, the validity of wearable devices for assessing light environments needs to be evaluated. In this study, we tested the accuracy of the GENEActiv Original devices (n = 10) for recording light under a range of ecologically relevant lighting conditions, including LED, fluorescent, infrared, and outdoor lighting. The GENEActiv output had a strong linear relationship with photopic illuminance. However, the devices consistently under-reported photopic illuminance, especially below 100 lux. Accuracy below 100 lux depended on the light source, with lower accuracy and higher variability under fluorescent lighting. The device’s accuracy was also tested using light sources of varying spectral composition, which indicated that the device tends to under-report photopic illuminance for green light sources and over-report for red light sources. Furthermore, measures of photopic illuminance were impacted by infrared light exposure. We conclude that the GENEActiv Original is suitable for mapping light patterns within an individual context, and can reasonably differentiate indoor vs. outdoor lighting, though the accuracy is variable at low light conditions. Given the human circadian system’s high sensitivity to light levels below 100 lux, if using the GENEActiv Original, we recommend also collecting light source data to better understand the impact on the circadian system, especially where participants spend prolonged periods in dim lighting.
format Online
Article
Text
id pubmed-7445795
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-74457952020-10-20 Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research Stone, Julia E. McGlashan, Elise M. Facer-Childs, Elise R. Cain, Sean W. Phillips, Andrew J. K. Clocks Sleep Article Light is a variable of key interest in circadian rhythms research, commonly measured using wrist-worn sensors. The GENEActiv Original is a cost-effective and practical option for assessing light in ambulatory settings. With increasing research on health and well-being incorporating sleep and circadian factors, the validity of wearable devices for assessing light environments needs to be evaluated. In this study, we tested the accuracy of the GENEActiv Original devices (n = 10) for recording light under a range of ecologically relevant lighting conditions, including LED, fluorescent, infrared, and outdoor lighting. The GENEActiv output had a strong linear relationship with photopic illuminance. However, the devices consistently under-reported photopic illuminance, especially below 100 lux. Accuracy below 100 lux depended on the light source, with lower accuracy and higher variability under fluorescent lighting. The device’s accuracy was also tested using light sources of varying spectral composition, which indicated that the device tends to under-report photopic illuminance for green light sources and over-report for red light sources. Furthermore, measures of photopic illuminance were impacted by infrared light exposure. We conclude that the GENEActiv Original is suitable for mapping light patterns within an individual context, and can reasonably differentiate indoor vs. outdoor lighting, though the accuracy is variable at low light conditions. Given the human circadian system’s high sensitivity to light levels below 100 lux, if using the GENEActiv Original, we recommend also collecting light source data to better understand the impact on the circadian system, especially where participants spend prolonged periods in dim lighting. MDPI 2020-04-12 /pmc/articles/PMC7445795/ /pubmed/33089197 http://dx.doi.org/10.3390/clockssleep2020012 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Stone, Julia E.
McGlashan, Elise M.
Facer-Childs, Elise R.
Cain, Sean W.
Phillips, Andrew J. K.
Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title_full Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title_fullStr Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title_full_unstemmed Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title_short Accuracy of the GENEActiv Device for Measuring Light Exposure in Sleep and Circadian Research
title_sort accuracy of the geneactiv device for measuring light exposure in sleep and circadian research
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7445795/
https://www.ncbi.nlm.nih.gov/pubmed/33089197
http://dx.doi.org/10.3390/clockssleep2020012
work_keys_str_mv AT stonejuliae accuracyofthegeneactivdeviceformeasuringlightexposureinsleepandcircadianresearch
AT mcglashanelisem accuracyofthegeneactivdeviceformeasuringlightexposureinsleepandcircadianresearch
AT facerchildseliser accuracyofthegeneactivdeviceformeasuringlightexposureinsleepandcircadianresearch
AT cainseanw accuracyofthegeneactivdeviceformeasuringlightexposureinsleepandcircadianresearch
AT phillipsandrewjk accuracyofthegeneactivdeviceformeasuringlightexposureinsleepandcircadianresearch