The effect of urbanization on sleep, sleep/wake routine, and metabolic health of residents in the Amazon region of Brazil

Martins, Andressa J., Isherwood, Cheryl M., Vasconcelos, Suleima P., Lowden, Arne, Skene, Debra J. and Moreno, Claudia R.C. (2020) The effect of urbanization on sleep, sleep/wake routine, and metabolic health of residents in the Amazon region of Brazil Chronobiology International. pp. 1-9.

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Abstract

Studying communities with different levels of urbanization may further the understanding of risk factors underlying metabolic diseases. The present study is unique by comprising detailed assessment of sleep and activity, biological rhythms, and metabolic factors of men from the same geographical location and place of birth that reside in different, rural vs. town, stages of urbanization. Sleep patterns, activity, and metabolic indicators in two groups (rural, n = 22 and town/urban, n = 20) of men residing in an Amazonian community (Xapuri, Acre, Brazil) were compared. Sociodemographic, anthropometric, and metabolic variables – fasting glucose, insulin resistance, triglycerides, total HDL cholesterol, LDL cholesterol, and VLDL cholesterol – were assessed. Sleep patterns, light exposure, and physical activity levels were additionally assessed by actigraphy, plus daily activities were recorded in diaries for 10 days. Town/urban dwellers were found to have significantly higher body weight, fasting glucose, insulin levels, and insulin resistance than rural dwellers, whereas triglycerides levels were similar. Town/Urban dwellers had shorter sleep duration (p < .01) and later sleep onset and offset times (p = .01). Our findings show an association between stage of urbanization and presence of risk factors for metabolic disorders, such as overweight, insulin resistance, increased glucose levels, short sleep duration, and less natural light exposure during work times.

Item Type:	Article
Divisions :	Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :	Name Email ORCID Martins, Andressa J. Isherwood, Cheryl M. c.isherwood@surrey.ac.uk Vasconcelos, Suleima P. Lowden, Arne Skene, Debra J. D.Skene@surrey.ac.uk Moreno, Claudia R.C.
Date :	11 August 2020
Funders :	Fundação de Amparo à Pesquisa do Estado de São Paulo, Short-term Visiting Researcher Grant
DOI :	10.1080/07420528.2020.1802287
Grant Title :	Fundação de Amparo à Pesquisa do Estado de São Paulo
Copyright Disclaimer :	© 2020 Taylor & Francis Group, LLC
Uncontrolled Keywords :	Urban; rural; metabolic diseases; metabolic parameters; sleep; natural light exposure; circadian routine
Additional Information :	Embargo OK Metadata OK No Further Action
Depositing User :	James Marshall
Date Deposited :	14 Aug 2020 10:35
Last Modified :	14 Aug 2020 10:35
URI:	http://epubs.surrey.ac.uk/id/eprint/858411

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