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J Pediatr. 2016 Jan;168:99-103.e3. doi: 10.1016/j.jpeds.2015.09.074. Epub 2015 Nov 2.

Short Sleep Duration in the First Years of Life and Obesity/Overweight at Age 4 Years: A Birth Cohort Study.

Author information

1
PhD Program of Medicine and Health Sciences, Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; Conceição Hospital Group, Porto Alegre, Brazil. Electronic address: camilahalal@hotmail.com.
2
Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil; Postgraduate Epidemiology Program, Federal University of Pelotas, Pelotas, Brazil.
3
Medical Research Council Integrative Epidemiology Unit at the University of Bristol, School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom.
4
Postgraduate Epidemiology Program, Federal University of Pelotas, Pelotas, Brazil.
5
Postgraduate Epidemiology Program, Federal University of Pelotas, Pelotas, Brazil; Postgraduate Program of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil.
6
Division of Neurology, Pontificia Universidade Católica do Rio Grande do Sul School of Medicine and Brain Institute (INSCER), Porto Alegre, Brazil.

Abstract

OBJECTIVE:

To investigate whether short sleep duration from the first year of life influenced weight at an early age.

STUDY DESIGN:

During 2004, children born in Pelotas, Brazil, were enrolled in a cohort study. Sleeping habits during the previous 2 weeks were assessed, and the children were weighed and measured at 1-, 2-, and 4-year follow-ups. Overweight and obesity at 4 years were defined according to World Health Organization z-scores for body mass index for age. Short sleep duration was defined as fewer than 10 hours of sleep per night at any follow-up.

RESULTS:

Out of the 4263 live births, 4231 were recruited. The prevalence of short sleep duration at any follow-up from 1-4 years of age was 10.1%. At 4 years of age, 201 children were obese (5.3%), and 302 (8%) were overweight. Among short sleepers, the prevalence ratio for overweight/obesity after adjusting for maternal and children's characteristics was 1.32 (1.03; 1.70).

CONCLUSIONS:

Children who slept for fewer than 10 hours per night at any follow-up from 1-4 years of age were more likely to be overweight or obese at 4 years of age, despite their sociodemographic and sleep characteristics.

PMID:
26541426
PMCID:
PMC4691233
DOI:
10.1016/j.jpeds.2015.09.074
[Indexed for MEDLINE]
Free PMC Article

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