Sleep pattern and body mass index gain in Indigenous Australian children

Fatima, Y., Mamun, A. Al, and Skinner, T. (2019) Sleep pattern and body mass index gain in Indigenous Australian children. Journal of Sleep Research, 28 (S1). O024. p. 11.

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Purpose: This study aims to explore different sleep patterns in Indigenous Australian children and assess the role of sleep patterns in longitudinal changes in body mass index (BMI).

Methods: This work is based on wave 5 to wave 8 (2012–2015) data of the Australian Longitudinal Study of Indigenous Children (LSIC) cohort. Latent class analysis was used to determine distinct sleep patterns, taking into account weekday sleep duration, weekdays and weekends bedtimes, and weekday wake times. Multilevel models with a random intercept for child and geographic clusters were used to investigate the role of baseline sleep pattern in predicting longitudinal changes in BMI.

Results: Baseline data for 1,258 children (50.7% males), mean age 6.32 years (SD ± 1.52), indicated the presence of five classes of sleep patterns: early/long sleepers (4.5%), normative sleepers (25.5%), late sleepers (49.9%), consistent late sleepers (11.1%), and early risers (9%). Family income, child health, food choices, sleep problems, geographic remoteness and area‐level disadvantage, were found to be significantly associated with sleep patterns in children. Regression results indicate that late sleep pattern is significantly associated with longitudinal gains in BMI. Compared with early sleepers, consistent late sleepers were found to have a significant increase in BMI (β = 1.03, 95% CI: 0.001–2.05, p = 0.05).

Conclusions: This study underscores the importance of looking beyond sleep duration and highlighting the positive outcomes of early bedtimes in children. As sleep pattern is modifiable, this offers the opportunity for improvement in sleep and protecting against future weight gain in Indigenous children.

Item ID: 67121
Item Type: Article (Abstract)
ISSN: 1365-2869
Copyright Information: © 2019 The Authors Journal of Sleep Research © 2019 European Sleep Research Society
Additional Information:

Presented at Sleep DownUnder 2019: 31st ASM of Australasian Sleep Association, 16-19 October 2019, Sydney, NSW, Australia.

Date Deposited: 17 Mar 2021 04:34
FoR Codes: 42 HEALTH SCIENCES > 4206 Public health > 420699 Public health not elsewhere classified @ 100%
SEO Codes: 21 INDIGENOUS > 2103 Aboriginal and Torres Strait Islander health > 210302 Aboriginal and Torres Strait Islander health status and outcomes @ 100%
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