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Association between infant sleep and neurodevelopment in a prospective birth cohort study

Xianxian Zhu1, Yingying Zhang2, Bo Yang3

  • 1State Key Laboratory of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu, China; Department of Maternal, Child and Adolescent Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.

Sleep Health
|November 13, 2024
PubMed

Insights

Infant sleep problems like frequent night awakenings and prolonged sleep onset latency are linked to poorer neurodevelopment. Total sleep duration did not show a significant association with infant development outcomes.

Area of Science:

  • Developmental Pediatrics
  • Sleep Medicine
  • Neuroscience

Background:

  • Infant sleep patterns are crucial for healthy development.
  • Understanding the long-term impact of sleep trajectories on neurodevelopment is essential.

Purpose of the Study:

  • To examine the association between infant sleep patterns and sleep trajectories in the first year of life and neurodevelopmental outcomes.
  • To identify specific sleep characteristics that may pose a risk to infant development.

Main Methods:

  • A cohort of 3251 infants in China was studied.
  • Sleep parameters were assessed using the Brief Infant Sleep Questionnaire at 42 days, 6 months, and 1 year.
  • Neurodevelopment was evaluated at 1 year using the Bayley Scales of Infant and Toddler Development, Third Edition.
  • Latent variable growth curve modeling analyzed sleep trajectories (total sleep duration, night awakenings, sleep onset latency).
  • Poisson regression assessed associations between sleep and neurodevelopment.

Main Results:

  • Frequent night awakenings at 6 months were associated with a higher risk of nonoptimal gross motor development.
  • Prolonged sleep onset latency at 1 year increased the risk of nonoptimal fine and gross motor development.
  • A consistent trajectory of frequent night awakenings elevated the risk of nonoptimal gross motor development (aRR, 1.52).
  • An increasing trajectory of sleep onset latency was linked to increased risks of nonoptimal fine (aRR, 2.70) and gross motor development (aRR, 2.76).
  • Total sleep duration and its trajectory showed no significant association with neurodevelopment.

Conclusions:

  • Specific sleep problems and trajectories during infancy can elevate the risk of compromised neurodevelopment.
  • Night awakenings and sleep onset latency are key sleep parameters associated with motor development risks.
Abstract

Keywords:
Birth cohort studyInfant sleepNeurodevelopmentSleep trajectories

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