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Published on: June 29, 2013
Does fetal growth restriction influence body composition at school age?
Marilia C Lima1, Henrique F Dantas, Rosemary J M Amorim
1Departamento Materno Infantil, Universidade Federal de Pernambuco, Recife, PE, Brazil.
Insights
Low birth weight did not significantly impact body composition in full-term schoolchildren. Socioeconomic factors and child morbidity were more influential on body fat deposition.
Area of Science:
- Pediatrics
- Nutritional Science
- Public Health
Background:
- Low birth weight is a global concern affecting child development.
- Understanding long-term body composition impacts is crucial for public health interventions.
Purpose of the Study:
- To evaluate the effect of low birth weight in full-term infants on body composition at school age.
- To identify factors influencing body composition in this cohort.
Main Methods:
- Cross-sectional study of 213 children (aged 8) from a birth cohort in Pernambuco, Brazil.
- Body composition assessed via skinfold thickness and mid-upper arm circumference.
- Multivariable linear regression analyzed influences of birth weight, socioeconomic status, maternal nutrition, and child morbidity.
Main Results:
- Children with low birth weight had slightly lower skinfold thickness and arm circumference, but differences were not significant.
- Socioeconomic variables, particularly family income, explained the most variance in triceps skinfold thickness (12.3%).
- Childhood anemia, past hospitalization, and maternal BMI also influenced body composition, while low birth weight did not.
Conclusions:
- Socioeconomic status and childhood morbidity significantly influence body composition in full-term schoolchildren.
- Low birth weight was not a primary determinant of body composition at school age in this population.
Objective:
To assess the influence of low birth weight in full-term infants on body composition at school age.
Method:
This is a cross-sectional study nested in a cohort of 375 infants recruited at birth between 1993 and 1994 in the state of Pernambuco, Brazil. At 8 years of age, the body composition of 213 children from this cohort was assessed by measurement of triceps and subscapular skinfold thickness and mid upper arm circumference. Multivariable linear regression analysis was used to identify the influence of low birth weight, socioeconomic condition, maternal nutritional status, and child morbidity on triceps skinfold thickness.
Results:
Mean triceps and subscapular skinfold thickness, mid upper arm circumference, and upper arm muscle and fat areas were lower in children born at term with low weight than in those with appropriate birth weight. However, these differences were not statistically significant. Multivariable linear regression analysis showed that the relative majority of variance in triceps skinfold thickness (12.3%) was explained by socioeconomic variables, particularly per capita family income (9.1%), followed by anemia and past hospitalization (which, together, explained 5.6% of variance) and maternal body mass index, which contributed toward 2.4% of this variance. Low birth weight had no influence on triceps subcutaneous fat deposition in this age group.
Conclusion:
Socioeconomic factors and a history of morbidity had a greater influence on body composition than low birth weight in schoolchildren born at term.
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