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Related Experiment Videos

Gain in weight and length during early infancy.

S E Nelson1, R R Rogers, E E Ziegler

  • 1Department of Pediatrics, College of Medicine, University of Iowa, Iowa City 52242.

Early Human Development
|July 1, 1989
PubMed
Summary

This study provides crucial infant growth reference data for weight and length gains in breast-fed and formula-fed infants. These findings offer valuable insights for assessing infant health and development.

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Area of Science:

  • Pediatrics
  • Human Growth and Development
  • Nutritional Science

Background:

  • Infant growth rate is a key health indicator.
  • Limited reference data exists for infant weight and length gains during peak growth periods.
  • Accurate growth charts are essential for monitoring infant development.

Purpose of the Study:

  • To establish comprehensive reference data for infant weight and length gains.
  • To provide feeding-specific (breast-fed vs. formula-fed) and sex-specific growth parameters.
  • To aid in the interpretation of infant growth studies and clinical assessments.

Main Methods:

  • Collected longitudinal data on 1123 infants (203 breast-fed males, 216 breast-fed females, 380 formula-fed males, 340 formula-fed females).
  • Performed seven sets of measurements for each infant at specific ages (8, 14, 28, 42, 56, 84, and 112 days).

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  • Calculated centile values (5th-95th), means, and standard deviations for weight and length gains.

    • Main Results:

    • Presented detailed centile data for infant weight and length gains across various age intervals.
    • Differentiated growth data based on feeding type (breast milk or formula) and infant sex.
    • Established reference ranges for normal infant growth trajectories.

    Conclusions:

    • The generated data serves as a valuable reference for interpreting infant growth.
    • These feeding-specific and sex-specific growth charts can enhance the accuracy of pediatric assessments.
    • The findings support improved monitoring and evaluation of infant health and nutritional status.