RESUMEN
Obesity is associated with lower levels of serum 25-hydroxyvitamin D (25(OH)D). Obese individuals might need higher doses of vitamin D supplementation than the general population. In this cross-sectional study, associations between 25(OH)D serum levels, body mass index (BMI), and outdoor exercise were assessed in a population of 291 ambulatory patients attending the Osteoporosis Center at the University of Miami, mean age 62+/-13.48 years. Obesity was defined as BMI> or =30 kg/m(2) and hypovitaminosis D as 25(OH)D< or =30 ng/ml. Overall, prevalence of obesity was 14.1% and of hypovitaminosis D was 42.4%. Among Hispanics, there was a significantly higher prevalence of hypovitaminosis D in obese (63.2%) compared to non-obese individuals (35.8%). Outdoor exercise had a significant effect on the prevalence of hypovitaminosis D in Hispanics, with a lower prevalence in those performing outdoor exercise (24.1%) compared to those who did not (47.9%). After adjusting for age, gender, and ethnicity, those reporting outdoor exercise were 47% less likely to have hypovitaminosis D, while those with obesity had more than twice the risk. Since outdoor exercise may protect overweight individuals from hypovitaminosis D, prevention programs involving higher doses of vitamin D and/or outdoor exercise may result in additional metabolic and functional benefits in this population.
Asunto(s)
Ejercicio Físico/fisiología , Trastornos Nutricionales/complicaciones , Trastornos Nutricionales/prevención & control , Obesidad/sangre , Obesidad/complicaciones , Vitamina D/análogos & derivados , Índice de Masa Corporal , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Trastornos Nutricionales/sangre , Trastornos Nutricionales/etnología , Factores de Riesgo , Vitamina D/sangreRESUMEN
High HDL-cholesterol (HDL-C) based on the 85th percentile of the 2009-2010 National Health and Education Survey (NHANES) was present in more than a third of 194 unselected subjects with type 1 diabetes (T1D). Age was associated with an increase and Hispanic ethnicity with a decrease in the prevalence of high HDL-C.
Asunto(s)
HDL-Colesterol/sangre , Diabetes Mellitus Tipo 1/sangre , Hispánicos o Latinos/estadística & datos numéricos , Hipercolesterolemia/epidemiología , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Envejecimiento , Población Negra/estadística & datos numéricos , Estudios Transversales , Diabetes Mellitus Tipo 1/epidemiología , Femenino , Humanos , Hipercolesterolemia/sangre , Masculino , Persona de Mediana Edad , Prevalencia , Pronóstico , Medición de Riesgo , Índice de Severidad de la Enfermedad , Estados Unidos/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Height and weight information is commonly used in clinical trials and in making therapeutic decisions in medical practice. In both settings, the data are often obtained by self-report. If erroneous, this practice could lead to inaccuracies in estimating renal function and medication doses or to inaccurate outcomes of research studies. Previous publications have reported lack of reliability of self-reported weight and height in the general population but have not addressed age-specific and ethnicity-specific subgroups in the U.S. population. The inaccuracy of self-reported weight and height could be particularly significant in times of considerable changes in body weight, such as at menopause, which is often associated with weight gain. METHODS: We assessed the validity of self-reported height and weight in 428 women within the first 5 years of menopause, 70.6% of whom were Hispanic. RESULTS: Participants overestimated their height by 2.2±3.5 cm (mean±standard deviation [SD]) and underestimated their weight by 1.5±2.9 kg. As a group, based on self-reported measures, 33.3% were misclassified with respect to body mass index (BMI) category, and the difference between measured BMI and self-reported BMI was similar between Hispanic white and non-Hispanic white women, positively related to measured weight, and inversely related to measured height, years from menopause, and multiple parity. CONCLUSIONS: From the public health perspective, inaccurate self-report could lead to a considerable underestimation of the current obesity prevalence rates. In our study population, the prevalence of obesity (BMI ≥30 kg/m(2)) was 6.3% based on self-reported values and 18% based on measured height and weight, representing a 3-fold underestimation.