Related Experiment Video
Updated: Jul 13, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Maternal size in pregnancy and body composition in children
Catharine R Gale1, M Kassim Javaid, Sian M Robinson
1Medical Research Council Epidemiology Resource Centre, University of Southampton, Southampton SO16 6YD, United Kingdom. crg@mrc.soton.ac.uk
Insights
Maternal size during pregnancy, including prepregnant body mass index (BMI) and mid-upper arm circumference, is linked to increased childhood adiposity. This association suggests a lasting impact of maternal factors on a child's body composition.
Area of Science:
- Pediatric Endocrinology
- Maternal-Fetal Medicine
- Human Body Composition
Background:
- Maternal adiposity during pregnancy is associated with higher infant fat mass.
- The persistence of this association into childhood remains unclear.
- Understanding early life influences on body composition is crucial for public health.
Purpose of the Study:
- To investigate the relationship between maternal size during pregnancy and children's body composition at age 9.
- To examine the association between maternal prepregnant body mass index (BMI) and mid-upper arm circumference with children's fat mass index (FMI) and lean mass index (LMI).
Main Methods:
- Prospective cohort study conducted in Southampton, UK.
- 216 nine-year-old children and their mothers were recruited.
- Maternal prepregnant BMI and mid-upper arm circumference (in late pregnancy) were recorded.
- Children's fat mass and lean mass were measured using dual-energy x-ray absorptiometry, with fat mass index (FMI) and lean mass index (LMI) calculated.
Main Results:
- Higher maternal prepregnant BMI and larger mid-upper arm circumference in late pregnancy were associated with greater FMI in children at age 9.
- A 1-unit increase in maternal mid-upper arm circumference correlated with a 0.26-0.44 sd increase in child's FMI.
- A 1-unit increase in maternal prepregnant BMI correlated with a 0.26-0.42 sd increase in child's FMI.
Conclusions:
- Maternal prepregnant BMI and mid-pregnancy upper arm circumference are significant predictors of childhood adiposity.
- The study highlights the lasting impact of maternal size on offspring body composition.
- Further research is needed to elucidate the specific mechanisms (genetic, lifestyle, or in-utero effects) driving this association.
Context:
Evidence suggests that babies' fat mass at birth is greater if their mothers were themselves fatter during pregnancy, but it is unclear whether this association persists into childhood.
Objective:
Our objective was to examine the relation between maternal size in pregnancy, early growth and body composition in children.
Design And Setting:
We conducted a prospective cohort study in Southampton, United Kingdom.
Participants:
Participants included 216 9-yr-old children whose mothers had participated in a study of nutrition during pregnancy.
Main Outcome Measures:
Fat mass and lean mass were measured by dual-energy x-ray absorptiometry and adjusted for height (fat mass index and lean mass index).
Results:
Fat mass index at age 9 yr was greater in children whose mothers had a larger mid-upper arm circumference in late pregnancy or a higher prepregnant body mass index. For 1 sd increase in maternal mid-upper arm circumference in late pregnancy, fat mass index rose by 0.26 [95% confidence interval (CI) 0.06-0.46] sd in boys and by 0.44 (95% CI 0.31-0.57) sd in girls. For 1 sd increase in maternal prepregnant BMI, fat mass index rose by 0.26 (95% CI 0.04-0.48) sd in boys and by 0.42 (95% CI 0.29-0.56) sd in girls.
Conclusions:
Mothers with a higher prepregnant body mass index or a larger mid-upper arm circumference during pregnancy tend to have children with greater adiposity at age 9. The extent to which this is attributable to genetic factors, the influence of maternal lifestyle on that of her child, or maternal adiposity acting specifically during pregnancy on the child's fat mass cannot be determined in this study.
More Related Videos
05:44Concurrent Collection of Fetal Murine Brain and Serum to Assess Effects of Maternal Diet on Nutrition and Neurodevelopment in Neurofibromatosis Type 1
Published on: May 17, 2024
14:40Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings
Published on: October 25, 2015
Related Concept Videos
Nature and Nurture
Regression Toward the Mean
Drug Dosing: Obese Patients
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution
Development of Human Microbiota
Pharmacokinetics in Pediatric Patients: Drug Distribution