Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation

Abstract The well-established negative health outcomes of sleep deprivation, and the suggestion that availability of electricity may enable later bed times without compensating sleep extension in the morning, have stimulated interest in studying communities whose sleep pattern may resemble a pre-ind...

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Autores principales:	Andrew D. Beale, Mario Pedrazzoli, Bruno da Silva B. Gonçalves, Felipe Beijamini, Núbia E. Duarte, Kieren J. Egan, Kristen L. Knutson, Malcolm von Schantz, Laura C. Roden
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e5a0716698fe42ac89206ec764a03186
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spelling	oai:doaj.org-article:e5a0716698fe42ac89206ec764a031862021-12-02T12:32:26ZComparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation10.1038/s41598-017-05712-32045-2322https://doaj.org/article/e5a0716698fe42ac89206ec764a031862017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05712-3https://doaj.org/toc/2045-2322Abstract The well-established negative health outcomes of sleep deprivation, and the suggestion that availability of electricity may enable later bed times without compensating sleep extension in the morning, have stimulated interest in studying communities whose sleep pattern may resemble a pre-industrial state. Here, we describe sleep and activity in two neighbouring communities, one urban (Milange) and one rural (Tengua), in a region of Mozambique where urbanisation is an ongoing process. The two communities differ in the amount and timing of daily activity and of light exposure, with later bedtimes (≈1 h) associated with more evening and less daytime light exposure seen in the town of Milange. In contrast to previous reports comparing communities with and without electricity, sleep duration did not differ between Milange (7.28 h) and Tengua (7.23 h). Notably, calculated sleep quality was significantly poorer in rural Tengua than in Milange, and poor sleep quality was associated with a number of attributes more characteristic of rural areas, including more intense physical labour and less comfortable sleeping arrangements. Thus, whilst our data support the hypothesis that access to electricity delays sleep timing, the higher sleep quality in the urban population also suggests that some aspects of industrialisation are beneficial to sleep.Andrew D. BealeMario PedrazzoliBruno da Silva B. GonçalvesFelipe BeijaminiNúbia E. DuarteKieren J. EganKristen L. KnutsonMalcolm von SchantzLaura C. RodenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrew D. Beale Mario Pedrazzoli Bruno da Silva B. Gonçalves Felipe Beijamini Núbia E. Duarte Kieren J. Egan Kristen L. Knutson Malcolm von Schantz Laura C. Roden Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
description	Abstract The well-established negative health outcomes of sleep deprivation, and the suggestion that availability of electricity may enable later bed times without compensating sleep extension in the morning, have stimulated interest in studying communities whose sleep pattern may resemble a pre-industrial state. Here, we describe sleep and activity in two neighbouring communities, one urban (Milange) and one rural (Tengua), in a region of Mozambique where urbanisation is an ongoing process. The two communities differ in the amount and timing of daily activity and of light exposure, with later bedtimes (≈1 h) associated with more evening and less daytime light exposure seen in the town of Milange. In contrast to previous reports comparing communities with and without electricity, sleep duration did not differ between Milange (7.28 h) and Tengua (7.23 h). Notably, calculated sleep quality was significantly poorer in rural Tengua than in Milange, and poor sleep quality was associated with a number of attributes more characteristic of rural areas, including more intense physical labour and less comfortable sleeping arrangements. Thus, whilst our data support the hypothesis that access to electricity delays sleep timing, the higher sleep quality in the urban population also suggests that some aspects of industrialisation are beneficial to sleep.
format	article
author	Andrew D. Beale Mario Pedrazzoli Bruno da Silva B. Gonçalves Felipe Beijamini Núbia E. Duarte Kieren J. Egan Kristen L. Knutson Malcolm von Schantz Laura C. Roden
author_facet	Andrew D. Beale Mario Pedrazzoli Bruno da Silva B. Gonçalves Felipe Beijamini Núbia E. Duarte Kieren J. Egan Kristen L. Knutson Malcolm von Schantz Laura C. Roden
author_sort	Andrew D. Beale
title	Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
title_short	Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
title_full	Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
title_fullStr	Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
title_full_unstemmed	Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
title_sort	comparison between an african town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e5a0716698fe42ac89206ec764a03186
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Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation

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