Maternal Obesity and Excessive Gestational Weight Gain Are Associated with Components of Child Cognition.
J Nutr
; 145(11): 2562-9, 2015 Nov.
Article
en En
| MEDLINE
| ID: mdl-26423736
ABSTRACT
BACKGROUND:
Maternal overweight and obesity affect two-thirds of women of childbearing age and may increase the risk of impaired child cognition.OBJECTIVE:
Our objective was to test the hypothesis that high/low gestational weight gain (GWG) and high/low prepregnancy BMI were associated with offspring intelligence quotient (IQ) and executive function at age 10.METHODS:
Mother-infant dyads (n = 763) enrolled in a birth cohort study were followed from early pregnancy to 10 y postpartum. IQ was assessed by trained examiners with the use of the Stanford Binet Intelligence Scale-4th edition. Executive function was assessed by the number of perseverative errors on the Wisconsin Card Sorting Test and time to complete Part B on the Trail Making Test. Self-reported total GWG was converted to gestational-age-standardized GWG z score. Multivariable linear regression and negative binomial regression were used to estimate independent and joint effects of GWG and BMI on outcomes while adjusting for covariates.RESULTS:
At enrollment, the majority of women in the Maternal Health Practices and Child Development cohort were unmarried and unemployed, and more than one-half reported their race as black. The mean ± SD GWG z score was -0.5 ± 1.8, and 27% of women had a pregravid BMI ≥ 25. The median (IQR) number of perseverative errors was 23 (17, 29), the mean ± SD time on Part B was 103 ± 42.6 s, and 44% of children had a low average IQ (≤ 89). Maternal obesity was associated with 3.2 lower IQ points (95% CI -5.6, -0.8) and a slower time to complete the executive function scale Part B (adjusted ß 12.7 s; 95% CI 2.8, 23 s) compared with offspring of normal-weight mothers. Offspring of mothers whose GWG was >+1 SD, compared with -1 to +1 SD, performed 15 s slower on the executive function task (95% CI 1.8, 28 s). There was no association between GWG z score and offspring composite IQ score (adjusted ß -0.32; 95% CI -0.72, 0.10). Prepregnancy BMI did not modify these associations.CONCLUSIONS:
Although GWG may be important for executive function, maternal BMI has a stronger relation than GWG to both offspring intelligence and executive function. Our findings contribute to evidence linking maternal obesity to long-term child outcomes.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Aumento de Peso
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Desarrollo Infantil
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Cognición
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Madres
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Obesidad
Tipo de estudio:
Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adolescent
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Child
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Female
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Humans
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Infant
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Pregnancy
Idioma:
En
Año:
2015
Tipo del documento:
Article