Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes

OBJECTIVES: This study aimed to investigate the relationship between individual natural light exposure, sleep need, and depression at two latitudes, one extreme with a few hours of light per day during winter, and the other with equal hours of light and darkness throughout the year. METHODS: This cr...

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Detalles Bibliográficos
Autores principales: Marqueze, Elaine Cristina, Vasconcelos, Suleima, Garefelt, Johanna, Skene, Debra J., Moreno, Claudia Roberta, Lowden, Arne
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4398445/
https://www.ncbi.nlm.nih.gov/pubmed/25874859
http://dx.doi.org/10.1371/journal.pone.0122078
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author Marqueze, Elaine Cristina
Vasconcelos, Suleima
Garefelt, Johanna
Skene, Debra J.
Moreno, Claudia Roberta
Lowden, Arne
author_facet Marqueze, Elaine Cristina
Vasconcelos, Suleima
Garefelt, Johanna
Skene, Debra J.
Moreno, Claudia Roberta
Lowden, Arne
author_sort Marqueze, Elaine Cristina
collection PubMed
description OBJECTIVES: This study aimed to investigate the relationship between individual natural light exposure, sleep need, and depression at two latitudes, one extreme with a few hours of light per day during winter, and the other with equal hours of light and darkness throughout the year. METHODS: This cross-sectional study included a sample of Brazilian workers (Equatorial, n = 488 workers) and a Swedish sample (Arctic, n = 1,273). RESULTS: The reported mean total natural light exposure per 4-week cycle differed significantly between the Equatorial and Arctic regions. However, shiftworkers from both sites reported similar hours of natural light exposure. Short light exposure was a predictor for insufficient sleep. CONCLUSION: Reduced exposure to natural light appears to increase the perception of obtaining insufficient sleep. Arctic workers were more prone to develop depression than Equatorial workers.
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spelling pubmed-43984452015-04-21 Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes Marqueze, Elaine Cristina Vasconcelos, Suleima Garefelt, Johanna Skene, Debra J. Moreno, Claudia Roberta Lowden, Arne PLoS One Research Article OBJECTIVES: This study aimed to investigate the relationship between individual natural light exposure, sleep need, and depression at two latitudes, one extreme with a few hours of light per day during winter, and the other with equal hours of light and darkness throughout the year. METHODS: This cross-sectional study included a sample of Brazilian workers (Equatorial, n = 488 workers) and a Swedish sample (Arctic, n = 1,273). RESULTS: The reported mean total natural light exposure per 4-week cycle differed significantly between the Equatorial and Arctic regions. However, shiftworkers from both sites reported similar hours of natural light exposure. Short light exposure was a predictor for insufficient sleep. CONCLUSION: Reduced exposure to natural light appears to increase the perception of obtaining insufficient sleep. Arctic workers were more prone to develop depression than Equatorial workers. Public Library of Science 2015-04-15 /pmc/articles/PMC4398445/ /pubmed/25874859 http://dx.doi.org/10.1371/journal.pone.0122078 Text en © 2015 Marqueze et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Marqueze, Elaine Cristina
Vasconcelos, Suleima
Garefelt, Johanna
Skene, Debra J.
Moreno, Claudia Roberta
Lowden, Arne
Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title_full Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title_fullStr Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title_full_unstemmed Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title_short Natural Light Exposure, Sleep and Depression among Day Workers and Shiftworkers at Arctic and Equatorial Latitudes
title_sort natural light exposure, sleep and depression among day workers and shiftworkers at arctic and equatorial latitudes
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4398445/
https://www.ncbi.nlm.nih.gov/pubmed/25874859
http://dx.doi.org/10.1371/journal.pone.0122078
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