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Sleep. 2018 Nov 9. doi: 10.1093/sleep/zsy214. [Epub ahead of print]

Longer sleep duration during infancy and toddlerhood predicts weight normalization among high birth weight infants.

Author information

1
Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
2
Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
3
Child and Family Research Institute, British Columbia Children's Hospital, Vancouver, British Columbia, Canada.
4
Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada.
5
Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA.
6
Division of General and Community Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.

Abstract

Study Objectives:

High birth weight (HBW; ≥ 4000g) is strongly associated with later overweight, yet little is known about how to disrupt this trajectory. The current study examined sleep practices during infancy and toddlerhood among children born HBW or normal birth weight (NBW; 2500-3999g).

Methods:

Latent growth curve models were used to examine sleep during infancy and toddlerhood among 270 mother-child dyads enrolled in the Health Outcomes and Measures of the Environment Study. Total sleep duration in 24-h, sleep maintenance, and restlessness/vocalizations were collected at 6-month intervals between ages 6 to 24 months. Height and weight were obtained at ages 24 or 36 months, and normal and overweight BMI was derived. Sleep was examined among children with a normal BMI during the preschool years who were either HBW (HBW-Normal, n=36) or NBW (NBW-Normal, n=184) compared with overweight preschoolers (Overweight, n=50). It was predicted that the Overweight group would have poorer sleep across infancy and toddlerhood compared to HBW-Normal and NBW-Normal.

Results:

HBW-Normal had the longest and Overweight had the shortest mean 24-h sleep duration across all time points with NBW-Normal falling in-between the two groups. Compared to Overweight, HBW-Normal exhibited longer 24-h sleep duration at age 6 months with this group difference maintained over infancy and toddlerhood. No group difference was found for NBW-Normal.

Conclusions:

A longer sleep duration in the first several years of life is associated with development of normal BMI among HBW children. These findings suggest that longer sleep duration may protect HBW children from becoming overweight.

PMID:
30412240
DOI:
10.1093/sleep/zsy214

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