Nighttime sleep duration trajectories were associated with body mass index trajectories in early childhood

Miaobing Zheng; Kylie D. Hesketh; Jason H.Y.WuBerit L .HeitmannKatherine DowningKaren J. Campbell

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Nighttime sleep duration trajectories were associated with body mass index trajectories in early childhood

机译：Nighttime sleep duration trajectories were associated with body mass index trajectories in early childhood

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Background: The respective contribution of total, daytime and nighttime sleep duration in childhood obesity remains unclear. Objectives: To assess the longitudinal association between developmental trajectories of sleep duration and BMI z-score in early childhood. Methods: Data were from the Melbourne INFANT program, a prospective cohort with 4-month-old infants being followed-up until age 60 months (n = 528). Sleep duration (total, daytime, nighttime) and BMI z-score were measured using questionnaire at ages 4, 9,18, 43 and 60 months. Group-based trajectory modelling was used to describe longitudinal trajectories from ages 4 to 60 months. Multivariable logistic regression was conducted to assess the association between sleep duration and BMI z-score trajectories. Results: Three nighttime sleep duration trajectory groups were identified: "Long stable" (10.5 to 11.0 hours, 61), "catchup long" (8.0 to 11.5 hours, 23) and "short stable" (8.7 to 9.8 hours, 16) nighttime sleepers. BMI z-score trajectory groups were classified as "low-BMIz" (-1.5 to -0.5 unit, 21), "mid-BMIz" (-0.5 to 0.5 unit, 58) and "high-BMIz" (0.8 to 1.4 unit, 21). With adjustment for child and maternal covariates, both "catchup long" (OR 3.69 95CI 1.74, 7.92) and "long stable" nighttime sleepers (OR 4.27 95CI 2.21, 8.25) revealed higher odds of being in the "mid-BMIz" than the "high-BMIz" group. By contrast, total or daytime sleep duration trajectories were not associated with BMI z-score trajectories. Conclusions: Longer nighttime, but not total or daytime, sleep duration was associated with lower BMI z-score trajectories in early childhood. Our findings reinforce the importance of nighttime sleep for healthy body-weight development in early childhood.

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《Pediatric obesity.》 |2021年第7期|e12766-e12766|共1页
作者
Miaobing Zheng; Kylie D. Hesketh; Jason H.Y.WuBerit L .HeitmannKatherine DowningKaren J. Campbell;
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Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences;

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正文语种英语
中图分类儿科学;
关键词
Body mass index; early childhood; growth trajectory; nighttime; sleep duration;

Nighttime sleep duration trajectories were associated with body mass index trajectories in early childhood

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