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Children's sleep and adjustment: the moderating role of vagal regulation

Mona El-Sheikh1, Stephen A Erath, Peggy S Keller

  • 1Department of Human Development & Family Studies, Auburn University, Auburn, AL, USA. elshemm@auburn.edu

Journal of Sleep Research
|November 27, 2007
PubMed

Insights

Children with lower vagal tone face higher risks for adjustment issues when experiencing sleep disruptions. However, strong vagal suppression can protect against externalizing behaviors linked to poor sleep.

Area of Science:

  • Pediatric Psychology
  • Developmental Neuroscience
  • Sleep Medicine

Background:

  • Sleep disruptions in children are linked to various adjustment problems.
  • Vagal tone and vagal suppression are key indicators of physiological regulation.
  • Understanding individual differences in physiological regulation is crucial for child development.

Purpose of the Study:

  • To investigate vagal tone and vagal suppression as moderators between sleep disruptions and adjustment problems in children.
  • To explore how individual differences in vagal functioning influence the relationship between sleep and behavior.
  • To identify potential protective factors within physiological regulation for children experiencing sleep issues.

Main Methods:

  • Utilized actigraphy for objective sleep monitoring (Sleep Efficiency, Wake Minutes, Sleep Minutes) over seven days.
  • Assessed children's baseline vagal tone and vagal suppression response to inter-adult arguments.
  • Analyzed data from a sample of 167 children aged 8–9 years and their parents.

Main Results:

  • Lower vagal tone increased risk for externalizing problems, depression, and higher BMI associated with sleep disruptions.
  • Children with lower vagal tone showed poorer sleep efficiency and more wake time during sleep.
  • Higher vagal suppression acted as a protective factor against externalizing behaviors linked to sleep disruptions.

Conclusions:

  • Vagal tone significantly moderates the association between sleep disruptions and adjustment problems, with lower tone indicating vulnerability.
  • Vagal suppression demonstrates a protective role, mitigating negative behavioral outcomes associated with sleep disturbances.
  • Individual differences in children's vagal functioning are critical for understanding and addressing sleep and adjustment challenges.

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