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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

Beale, Andrew, Pedrazzoli, M, Gonçalves, BdaSB, Beijamini, F, Duarte, NE, Egan, Kieren, Knutson, KL, von Schantz, Malcolm and Roden, LC (2017) Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation Scientific Reports, 7, 5697.

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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 preindustrial 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.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :
NameEmailORCID
Beale, Andrewa.beale@surrey.ac.ukUNSPECIFIED
Pedrazzoli, MUNSPECIFIEDUNSPECIFIED
Gonçalves, BdaSBUNSPECIFIEDUNSPECIFIED
Beijamini, FUNSPECIFIEDUNSPECIFIED
Duarte, NEUNSPECIFIEDUNSPECIFIED
Egan, Kierenk.egan@surrey.ac.ukUNSPECIFIED
Knutson, KLUNSPECIFIEDUNSPECIFIED
von Schantz, MalcolmM.Von.Schantz@surrey.ac.ukUNSPECIFIED
Roden, LCUNSPECIFIEDUNSPECIFIED
Date : 18 July 2017
Identification Number : 10.1038/s41598-017-05712-3
Copyright Disclaimer : © The Author(s) 2017. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Depositing User : Melanie Hughes
Date Deposited : 01 Jun 2017 11:34
Last Modified : 05 Sep 2017 08:28
URI: http://epubs.surrey.ac.uk/id/eprint/841263

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