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Pediatr Obes. 2019 Nov;14(11):e12555. doi: 10.1111/ijpo.12555. Epub 2019 Jun 19.

Sleep duration and bedtime in preschool-age children with obesity: Relation to BMI and diet following a weight management intervention.

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Division of Pulmonary & Sleep Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus & Children's Hospital Colorado, Aurora, Colorado, USA.
Department of Pediatrics, Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
Department of Pediatrics, University of Colorado Anschutz Medical Campus & Children's Hospital Colorado, Aurora, Colorado, USA.



Sleep duration is associated with obesity in preschoolers. Weight-management interventions may be an opportunity to incorporate sleep health recommendations.


To examine changes in sleep in preschool-age children with obesity following a family-based weight-management intervention (Learning about Activity and Understanding Nutrition for Child Health [LAUNCH]) compared with motivational interviewing and standard care conditions. Additionally, we examined associations between sleep with body mass index (BMI) z score (BMIz) and diet.


One hundred fifty-one children (4.6 ± 0.93 y) completed baseline (pretreatment) and posttreatment (week 24) assessments, including anthropometrics, 24-hour dietary recalls, and a 7-day sleep diary. Analysis of variance (ANOVA) and chi-squared tests compared sleep variables between groups; linear regression models examined effects of sleep on BMIz and dietary intake at posttreatment, controlling for baseline values.


Bedtime and sleep duration were not significantly different between treatment groups from baseline to posttreatment. After adjusting for baseline sleep, earlier bedtime was associated with lower BMIz (95% CI, 0.00-0.04; .03), intake of added sugars (95% CI, 0.70-4.32; .007), and sweet/dessert food servings (95% CI, 0.00-0.19; .04) at posttreatment. Longer night-time sleep duration was associated with fewer added sugars at posttreatment, adjusting for baseline sleep (95% CI, -3.79 to -0.35; .02).


More comprehensive sleep intervention incorporated into weight-management intervention may be necessary to promote positive changes for preschoolers with obesity. A focus on earlier bedtime and longer sleep duration appears to be important given associations between sleep duration and bedtime with BMIz and dietary intake.


lifestyle intervention; overweight; pediatrics; sleep restriction

[Available on 2020-11-01]

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