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Region Hovedstaden - en del af Københavns Universitetshospital
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Nighttime sleep duration trajectories were associated with body mass index trajectories in early childhood

Publikation: Bidrag til tidsskriftTidsskriftartikelpeer review

DOI

  • Miaobing Zheng
  • Kylie D Hesketh
  • Jason H Y Wu
  • Berit L Heitmann
  • Katherine Downing
  • Karen J Campbell
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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 95%CI 1.74, 7.92) and "long stable" nighttime sleepers (OR 4.27 95%CI 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.

OriginalsprogEngelsk
Artikelnummere12766
TidsskriftPediatric obesity
Vol/bind16
Udgave nummer7
Sider (fra-til)e12766
ISSN1524-6817
DOI
StatusUdgivet - jul. 2021

ID: 67547470