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Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
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Upper arm anthropometry is not a valid predictor of regional body composition in preterm infants

L Pereira-da-Silva1, F Abecasis, D Virella

  • 1Neonatal Intensive Care Unit, Hospital de Dona Estefânia, Lisbon, Portugal. l.pereira.silva@netcabo.pt

Neonatology
|September 13, 2008
PubMed

Insights

Upper arm measurements do not accurately predict body composition in preterm infants. This study found anthropometry unreliable for assessing arm fat and fat-free mass in this vulnerable population.

Area of Science:

  • Neonatal nutrition and body composition assessment.
  • Pediatric anthropometry and its limitations.

Background:

  • Upper arm anthropometry is used for infant nutritional assessment.
  • Its predictive value for regional body composition in preterm infants remains unvalidated.

Purpose of the Study:

  • To validate measured and derived upper arm anthropometry.
  • To assess its predictive accuracy for arm fat and fat-free compartments in preterm infants.

Main Methods:

  • Compared upper arm anthropometry with magnetic resonance imaging (MRI) measurements.
  • Included cross-sectional arm areas in preterm neonates.
  • Assessed infants before discharge.

Main Results:

  • No anthropometric measurements reliably predicted MRI-derived body composition (r² < 0.56).
  • Individual and combined anthropometric measurements showed poor predictive value.
  • This includes upper arm cross-sectional areas.

Conclusions:

  • Measured and derived upper arm anthropometry are inaccurate predictors.
  • Body composition assessment in preterm infants requires more reliable methods.
  • Current anthropometric methods lack precision for this population.
Abstract

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