Body Composition Changes from Infancy to 4 Years and Associations with Early Childhood Cognition in Preterm and

Johannah M Scheurer1, Lei Zhang2, Erin A Plummer1

  • 1Division of Neonatology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA.

Neonatology
|June 14, 2018
PubMed

Insights

Body composition changes in preterm infants are linked to cognitive outcomes. Specific gains in fat-free mass correlate with higher IQ and processing speed, while fat mass gains are associated with cognitive function. These insights may guide growth interventions.

Area of Science:

  • Pediatric Health
  • Neurodevelopmental Science
  • Body Composition Analysis

Background:

  • Premature infants face risks of neurodevelopmental complications.
  • Early growth is crucial for later cognitive development.
  • The link between early body composition and cognitive function in preterm infants requires further investigation.

Purpose of the Study:

  • To compare changes in fat-free mass and adiposity between preterm and full-term infants up to preschool age.
  • To investigate the association between these body composition changes and early childhood cognition.

Main Methods:

  • A prospective observational study included 71 infants (20 preterm, 51 full-term).
  • Body composition was measured using air displacement plethysmography at term, 3-4 months corrected age, and 4 years.
  • Cognitive function was assessed at 4 years, with analyses using linear regression.

Main Results:

  • In preterm infants, increased percent body fat from term to 4 months was linked to lower working memory (p=0.01).
  • Higher fat-free mass gains from 4 months to 4 years correlated with better full-scale IQ (p=0.03) and processing speed (p≤0.02).
  • In full-term infants, increased fat mass from 4 months to 4 years was associated with lower full-scale IQ (p=0.03).

Conclusions:

  • Body composition changes during infancy and early childhood impact different aspects of cognitive function.
  • These findings highlight the importance of monitoring body composition for cognitive development in infants.
  • The results may inform targeted interventions to optimize growth and neurodevelopmental outcomes.
Abstract

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