RESUMEN
OBJECTIVE: To examine whether the relationship between obesity and asthma in young girls and boys can be explained by social and physical characteristics of the home environment. STUDY DESIGN: We examined the relationship between asthma and obesity in children in the Fragile Families and Child Wellbeing Study (n=1815). Asthma was determined through maternal report of asthma diagnosis by a doctor (active in past 12 months). Weight and height of child was measured during an in-home visit. Data on home social (maternal depression, intimate partner violence) and physical environmental factors (housing quality, tobacco exposure) were collected via questionnaire. RESULTS: Ten percent of children had active asthma, 19% of children were overweight, and 17% of children were obese. In fully adjusted models, obese children had twice the odds of having asthma (OR, 2.3; 95% CI, 1.5-3.3) compared with children of normal body weight. In stratified analyses, overweight boys, but not overweight girls, had increased of odds of asthma. Obese boys and girls had increased odds of asthma compared with boys and girls of normal body weight. CONCLUSION: The relationship between asthma and obesity is present in boys and girls as young as 3 years of age; a relationship between being overweight and asthma is only present among boys. This relationship is not attributable to shared social and environmental factors of the children's home.
Asunto(s)
Asma/epidemiología , Obesidad/epidemiología , Maltrato a los Niños , Preescolar , Depresión/epidemiología , Violencia Doméstica , Femenino , Vivienda , Humanos , Modelos Logísticos , Masculino , Madres , Sobrepeso/epidemiología , Factores Sexuales , Medio Social , Encuestas y Cuestionarios , Contaminación por Humo de Tabaco , Estados Unidos/epidemiología , Población UrbanaRESUMEN
This retrospective cohort study examined the relationship of birth weight, family history of diabetes (FamHx), and current weight to insulin resistance in Black girls and boys on the Caribbean island of Barbados. A cohort of 56 low birth weight (LBW) and 120 normal birth weight (NBW) adolescents born between January 1, 1986, and December 31, 1988, were recruited for study participation in 2002. FamHx was ascertained by questionnaire. Body mass index (BMI) and waist circumference (WC) were used to assess fat distribution. Fasting blood glucose and insulin were measured from blood samples drawn from each adolescent participant. Insulin resistance was estimated by the homeostasis model assessment (HOMA) technique. These data show that only among LBW girls was a positive (+) FamHx associated with higher HOMA (FamHx "Yes"=1.22 +/- 0.298 vs "No"=0.811 +/- 0.452; P=.032). No significant relationships were observed among boys. Further analyses revealed that compared to their NBW counterparts, LBW girls without FamHx, had a smaller WC (69.70 +/- 9.88cm vs 76.70 +/- 15.64cm, respectively; P=.055). In contrast, LBW girls with a (+) FamHx had similar mean WC (77.71 +/- 16.46cm) to those of NBW girls with (+) FamHx (WC=71.50 +/- 10.38cm; P=.405). These data indicate that along with a family history of diabetes, catch-up weight may be important in assessing diabetes risk in Black Caribbean LBW adolescent girls.
Asunto(s)
Población Negra , Peso Corporal , Diabetes Mellitus Tipo 2/epidemiología , Recién Nacido de Bajo Peso , Resistencia a la Insulina , Adolescente , Antropometría , Barbados/epidemiología , Salud de la Familia , Femenino , Humanos , Recién Nacido , Masculino , Estudios Retrospectivos , Riesgo , Distribución por Sexo , Estadísticas no ParamétricasRESUMEN
This study examined the relationship of internalized racism (INR) and hostility to body fat distribution and insulin resistance in black adolescent children age 14-16 years on the Caribbean island of Barbados. Questionnaire data on psychosocial variables and anthropometric measurements, together with a fasting blood sample, were obtained from 53 low-birthweight and 119 normal-birthweight adolescents. Insulin resistance was calculated using the homeostasis model assessment (HOMA). Spearman correlation analyses showed that both INR (r = 0.244) and hostility (r = 0.204) were significantly (p < 0.05) correlated with waist circumference in girls but not boys. Among girls, age- and birthweight-adjusted mean levels of BMI and waist circumference were greater for those with high levels of INR and hostility compared to those with low levels of both variables. In multiple logistic regression analyses, a high INR remained independently associated [odds ratio = 3.30 (95% CI = 1.30-8.36); p = 0.012] with having an elevated HOMA value in models that included age, income, birthweight, hostility, physical activity and family history of diabetes. The results of the current study show that the positive relationship between INR and metabolic health risk seen in African-Caribbean adults also exists in African Caribbean adolescent youth independent of birthweight.
Asunto(s)
Población Negra , Composición Corporal , Resistencia a la Insulina/etnología , Prejuicio , Adaptación Psicológica , Adolescente , Barbados , Índice de Masa Corporal , Femenino , Humanos , Modelos Logísticos , Masculino , Obesidad/etnología , Obesidad/psicología , Estudios RetrospectivosRESUMEN
The objective of this study was to determine whether acculturation and psychosocial stress exert differential effects on body fat distribution and insulin resistance among native-born African Americans and African-Caribbean immigrants living in the US Virgin Islands (USVI). Data collected from a non-diabetic sample of 183 USVI-born African Americans and 296 African-Caribbean immigrants age > 20 on the island of St. Croix, USVI were studied. Information on demographic characteristics, acculturation and psychosocial stress was collected by questionnaire. Anthropometric measurements were taken, and serum glucose and insulin were measured from fasting blood samples. Insulin resistance was estimated by the homeostasis model assessment (HOMA) method. The results showed that in multivariate regression analyses, controlling for age, education, gender, BMI, waist circumference, family history of diabetes, smoking and alcohol consumption, acculturation was independently related to logarithm of HOMA (InHOMA) scores among USVI-born African Americans, but not among African-Caribbean immigrants. In contrast, among USVI-born African Americans psychosocial stress was not significantly related to InHOMA, while among African-Caribbean immigrants psychosocial stress was independently related to InHOMA in models that included BMI, but not in those which included waist circumference. This study suggests that acculturation and psychosocial stress may have a differential effect on body fat distribution and insulin resistance among native-born and immigrant blacks living in the US Virgin Islands.
Asunto(s)
Aculturación , Población Negra/genética , Negro o Afroamericano/psicología , Composición Corporal , Resistencia a la Insulina , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Estrés Psicológico , Islas Virgenes de los Estados Unidos/epidemiologíaRESUMEN
The current study examined the relationship of internalized racism to glucose intolerance in a population of Afro-Caribbean women aged 18 to 55. Also of interest was whether this relationship would be differentially influenced by the type of body fat distribution or confounded by the level of hostility. A total of 244 women were selected from a systematic sample of households on the island of Dominica, West Indies. Demographic data together with information on internalized racism were collected by questionnaire. Anthropometric information and fasting blood glucose were also measured. Women with high levels of internalized racism exhibited an increased risk of elevated fasting glucose compared to those with low levels of internalized racism (odds ratio (OR) = 2.4; 95% confidence interval (CI) = 1.1-5.5). There was no difference in mean body mass index (BMI) by level of internalized racism. However those with high internalized racism had a significantly larger waist circumference after adjusting for age, education, hostility, and elevated fasting glucose status. In multivariate analyses controlling for age, education, hostility, and either weight or BMI, internalized racism remained independently associated with elevated fasting glucose. However, once waist circumference was included in the model, the relationship of internalized racism to elevated fasting glucose was not statistically significant. This study demonstrates a significant relationship between internalized racism and abnormal levels of fasting glucose which may be mediated through abdominal fat. The exact nature of the relationship of internalized racism to glucose intolerance may be an important area of future study.