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Overview
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  1. Home
  3. Research Domains
  5. Human Society
  7. Development Studies
  9. Labour, Migration And Development
  11. Relationship Between Type Of Delivery And Growth Trajectory In The First Year Of Life: The Araraquara Cohort Study.
  1. Home
  3. Research Domains
  5. Human Society
  7. Development Studies
  9. Labour, Migration And Development
  11. Relationship Between Type Of Delivery And Growth Trajectory In The First Year Of Life: The Araraquara Cohort Study.

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Relationship Between Type of Delivery and Growth Trajectory in the First Year of Life: The Araraquara Cohort Study.

Roseanne de Sousa Nobre1, Paula Louro Silva2, Letícia Falcão de Carvalho2

  • 1Postgraduate Epidemiology Programme, School of Public Health, University of São Paulo, São Paulo, Brazil.

American Journal of Human Biology : the Official Journal of the Human Biology Council
|June 9, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Cesarean delivery did not impact infant growth trajectories in the first year. Maternal education, infant sex, feeding method, and health were more influential on weight and length gain velocity than delivery type.

Keywords:
cesarean deliverygrowthgrowth trajectoryinfant obesity

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Area of Science:

  • Pediatrics
  • Human Growth and Development
  • Public Health

Background:

  • The association between delivery mode and infant growth is debated.
  • Understanding factors influencing infant growth is crucial for public health initiatives.

Purpose of the Study:

  • To investigate the relationship between delivery type and infant growth velocity in Brazilian infants.
  • To identify key determinants of weight gain velocity (WGV) and length gain velocity (LGV) during the first year of life.

Main Methods:

  • Prospective cohort study (2016-2021) involving 719 infants.
  • Quarterly anthropometric assessments to determine WGV and LGV.
  • Generalized estimating equations used to analyze delivery type effects.
weight gain trajectory

Main Results:

  • Delivery type showed no significant association with WGV or LGV.
  • Higher WGV linked to maternal education, male sex, formula feeding, and lower birth weight.
  • Higher LGV associated with formula feeding and maternal height; lower LGV with greater birth length.

Conclusions:

  • Infant growth velocity is primarily influenced by maternal factors, birth characteristics, feeding practices, and infant morbidity.
  • Delivery mode is not a primary determinant of infant growth in the first year.