Pontos de corte de circunferência da cintura de acordo com o estadiamento puberal para identificar sobrepeso em adolescentes / Cut off values for waist circumference to predict overweight in brazilian adolescents, according to pubertal staging

RESUMO Objetivo: Elaborar pontos de corte de circunferência da cintura de acordo com o estadiamento puberal para identificar sobrepeso em adolescentes. Métodos: Trata-se de um estudo longitudinal, aprovado pelo Comitê de Ética em Pesquisa, com 557 adolescentes, de 10 a 15 anos de idade, selecionados em escolas públicas. Aferiram-se as medidas de circunferência de cintura, braço, pescoço e quadril, percentual de gordura, massa corporal, estatura e pressão arterial. Para determinar a maturação sexual, foi utilizada a autoavaliação da escala de Tanner. Aplicou-se a curva ROC (Receiver Operating Characteristic Curve) para determinar: poder preditivo, sensibilidade, especificidade e os pontos de corte de circunferência de cintura para identificação de sobrepeso. Resultados: Observou-se correlação positiva entre circunferência de cintura e massa corporal, índice de massa corporal (IMC), circunferência do braço e quadril, razão cintura/quadril e pressão arterial em ambos os sexos. Os pontos de corte para circunferência de cintura de acordo com o estadiamento puberal para identificação de sobrepeso que apresentaram maior desempenho na curva ROC foram: 71,65 cm para meninas pré-púberes, 67,90 cm para meninas púberes, 70,25 cm para meninas pós-púberes e 66,45 cm para meninos púberes. Faixa etária, massa corporal, estatura, IMC, porcentagem de gordura, circunferência do braço e do quadril foram considerados fatores preditores da circunferência da cintura alterada. Conclusões: Os pontos de corte de circunferência da cintura de acordo com o estadiamento puberal demonstraram excelente desempenho para a identificação de sobrepeso, podendo ser considerados fidedignos para a população de adolescentes brasileiros, uma vez que utilizar apenas a idade cronológica na adolescência pode subestimar o estado nutricional.

ABSTRACT Objective: To establish waist circumference cut off points according to pubertal staging to identify overweight in adolescents. Methods: Longitudinal study approved by the Ethics Research Committee and conducted with 557 adolescents, aged 10 to 15 years old, selected from public schools. Waist, arm, neck and hip circumferences, body fat percentage, body mass index (BMI), height and blood pressure were measured. Pubertal staging was evaluated by Tanner self assessment scale. The Receiver Operating Characteristic Curve (ROC curve) was used to determine predictive power, sensitivity, specificity and waist circumference cut off points to detect overweight. Results: There was a positive correlation between waist circumference and weight, BMI, upper arm and hip circumferences, waist-to-hip ratio and blood pressure in both sexes. Cut off points for waist circumference according to pubertal stage as related to overweight in adolescents with the best performances in ROC curve were: 71.65 cm for prepubescent girls, 67.90 cm for pubescent girls, 70.25 cm for post pubescent girls, and 66.45 cm for pubescent boys. Age, weight, height, BMI, body fat percentage, arm and hip circumferences were associated to altered waist circumference. Conclusions: The establishment of cut off points for waist circumference according to pubertal staging was proven a good means to identify overweight. These cut off points can be considered reliable for the Brazilian adolescent population, as the isolated use of chronological age in adolescents may underestimate their nutritional status.

Utilidad del índice cintura/cadera en la detección del riesgo cardiometabólico en individuos sobrepesos y obesos / Usefulness of the waist/hip index in the detection of cardiometabolic risk in overweight and obese individuals

Introducción: el índice cintura/cadera se presenta como un elemento más de la valoración clínica de la obesidad y sus consecuencias. Objetivo: describir la utilidad del empleo del índice cintura/cadera en la detección del riesgo cardiometabólico. Métodos: se utilizó Google Académico como motor de búsqueda y se obtuvo un total de 97 artículos, de los cuales 61 fueron referenciados por cumplir con el objetivo enunciado. Resultados: la obesidad se comporta como una enfermedad multifactorial, de evolución crónica, con importantes consecuencias para la salud. El incremento del tejido adiposo abdominal, propicia una mayor síntesis y liberación de adipoquinas y otras sustancias, que pueden deteriorar el metabolismo lipídico y glucídico a través del aumento de la resistencia a la insulina, e incrementan el riesgo cardiovascular. El índice cintura/cadera evalúa de forma indirecta la grasa abdominal. Es un indicador poco costoso, sencillo de aplicar y fácil de interpretar en los 3 niveles de atención de salud de nuestro país. Se debe determinar su punto de corte para cada zona geográfica, ya que este puede variar de acuerdo con la entidad nosológica que estemos investigando y la muestra de pacientes estudiados, pues varía con el sexo y las características étnicas. Su empleo ayuda a predecir el riesgo cardiometabólico y de mortalidad en las personas estudiadas. Conclusiones: el índice cintura/cadera es útil en la predicción del riesgo cardiometabólico. Su correcto empleo mejoraría la calidad de los servicios en los 3 niveles de atención de salud en nuestro país(AU)

Introduction: waist/hip index is presented as another element of the clinical assessment of obesity and its consequences. Objective: to describe the usefulness of waist / hip index in the detection of cardiometabolic risk. Methods: Google Scholar was used as a search engine and a total of 97 articles were obtained, of which 61 were referenced for fulfilling the stated objective. Results: obesity behaves like a multifactorial disease of chronic evolution, with important consequences for health. The increase in abdominal adipose tissue promotes greater synthesis and release of adipokines and other substances, which can impair lipid and carbohydrate metabolism through increased insulin resistance, and increase cardiovascular risk. Waist/hip index evaluates abdominal fat indirectly. It is an inexpensive indicator, easy to apply and easy to interpret in the 3 levels of health care in our country. Its cut-off point must be determined for each geographical area, since this may vary according to the nosological entity we are investigating and the sample of patients studied, as it varies with sex and ethnic characteristics. Its use helps to predict cardiometabolic risk and mortality in the people studied. Conclusions: Waist/hip index is useful in the prediction of cardiometabolic risk. Its correct use would improve the quality of services in the 3 levels of health care in our country(AU)

Índice cintura-cadera contra perímetro cintura para el diagnóstico del síndrome metabólico en niños y adolescentes con familiares de primer grado diabéticos tipo 1 / Waist-hip index versus waist circumference for diagnosis of metabolic syndrome in first degree-children and adolescents relatives of persons with type 1 diabetes

Objetivo: comparar las mediciones de perímetro cintura e índice cintura-cadera para determinar la frecuencia del síndrome metabólico en familiares de primer grado de personas con diabetes tipo 1, utilizando diferentes definiciones pediátricas. Métodos: se estudiaron 224 familiares de primer grado de personas con diabetes tipo 1, en edades comprendidas entre los 4 y los 19 años. Se les determinó peso, talla, perímetro cintura y perímetro cadera, tensión arterial, glucemia, triglicéridos y HDL-colesterol. Se aplicaron las definiciones de síndrome metabólico según los criterios de Cook, Ford, la Federación Internacional de Diabetes y del consenso cubano. Se realizó una variante del consenso cubano utilizando: índice de masa corporal e índice cintura-cadera, según tablas cubanas, valores de glucosa ³ 5,6 mmol/L y tensión arterial ³ 90 percentil (tablas cubanas). Se tomaron, de forma independiente, los criterios de HDL-colesterol y triglicéridos. Empleamos el índice cintura-cadera de las tablas cubanas, el perímetro cintura sugerido por la Asociación Latinoamericana de Diabetes y el europeo para las definiciones estudiadas. Para la comparación de las frecuencias del síndrome metabólico, se usó la prueba exacta de Fisher. Resultados: la frecuencia del síndrome metabólico al aplicar la variante del consenso cubano fue de 9,37 por ciento (21/224). Al comparar la variante del consenso cubano con las definiciones de Cook, Ford y la Federación Internacional de Diabetes (que utiliza el perímetro cintura de la Asociación Latinoamericana de Diabetes), se observó diferencia significativa con Cook y la Federación Internacional de Diabetes (4,01 por ciento, p= 0,0360; 1,33 por ciento, p= 0,0002 respectivamente). Al confrontar la presencia del síndrome metabólico de la variante del consenso cubano con Cook (8,48 por ciento; 19/224) y Ford (8,93 por ciento; 20/224), teniendo en cuenta el índice cintura-cadera de las tablas cubanas, podemos detectar frecuencias similares de familiares de primer grado de personas con diabetes tipo 1 con síndrome metabólico. En cambio, encontramos diferencias significativas cuando comparamos las frecuencias del síndrome metabólico de la variante del consenso cubano (p= 0,0019), de Cook (p= 0,0053) y de Ford (p= 0,0032), con la definición sugerida por la Federación Internacional de Diabetes (2,23 pr ciento; 5/224) empleando el índice cintura-cadera. Conclusiones: nuestros datos indican que para el diagnóstico del síndrome metabólico debemos utilizar el índice cintura-cadera y no el perímetro cintura sugerido por la Asociación Latinoamericana de Diabetes, aún sin presentar datos propios del perímetro cintura de la población cubana(AU)

Objective: to compare the measurements of waist circumference and waist-hip circumference to determine the frequency of metabolic syndrome in first degree relatives of persons with type 1diabetes, using different pediatric definitions. Methods: two hundred twenty four first degree relatives of persons with type 1 diabetes were studied in ages from 4 to 10 years. Weight, height, waist-hip circumference, blood pressure, glycemia, triglycerides and HDL-cholesterol were determined. The definitions of metabolic syndrome according to Cook, Ford, International Federation of Diabetes and the Cuban consensus were applied. A variant of Cuban consensus was performed using: body mass index and waist-hip index according the Cuban tables, values of glucose ³ 5,6 mmol/L and blood pressure ³ 90 percentile (Cuban tables). In an independent way, criteria of HDL-cholesterol and triglycerides were taken into account. The waist-hip index of Cuban tables, the waist circumference suggested by the Latin-American and European Association of Diabetes for study definitions were applied. For comparison of frequencies of metabolic syndrome the Fisher exact test was used. Results: the frequency of metabolic syndrome with application of Cuban consensus variant was of 9,37 percent (21/224). Comparing the above variant with the definitions of Cook, Ford and of the International Federation of Diabetes (using the waist circumference of the Latin-American Association of Diabetes, there was a significant difference between Cook and the International Federation of Diabetes (4,01 percent, p= 0,0360; 1,33 percent, p= 0,0002, respectively). Comparing the presence of metabolic syndrome of the Cuban consensus variant with Cook (8,48 percent; 19/224) and Ford (8,93 percent; 20/224) taking into account the waist-hip index of the Cuban tables, it is possible to detect similar frequencies of first degree relatives of persons with type 1 diabetes with metabolic syndrome. On the other hand, we found significant differences comparing the frequencies of metabolic syndrome of the Cuban consensus variant (p= 0,0019), of Cook (p= 0,0053) and of Ford (p= 0,0032) with the definition suggested by the International Federation of Diabetes (2,23 percent; 5/224) using the waist-hip index. Conclusions: our data demonstrate that for the diagnosis of metabolic syndrome we must to use the waist-hip index and not the circumference suggested by the Latin-American Association of Diabetes, still without to present own data of waist-hip circumference of the Cuban population(AU)

Associação de diferentes medidas e índices antropométricos com a carga aterosclerótica coronariana / Association of different anthropometric measures and indices with coronary atherosclerotic burden

FUNDAMENTO: A associação entre parâmetros antropométricos e carga aterosclerótica ainda não está bem estabelecida e poucos estudos na literatura abordam esse tema. OBJETIVO: Avaliar a associação de diferentes parâmetros antropométricos com a carga aterosclerótica coronariana. MÉTODOS: Participaram do estudo pacientes adultos submetidos à cineangiocoronariografia. Dados sociodemográficos e fatores de risco cardiovasculares foram coletados em um questionário padronizado. Foram medidos peso, altura, circunferência da cintura (CC), circunferência abdominal (CABD), circunferência do quadril (CQ) e circunferência do pescoço (CP), com o cálculo do índice de massa corporal (IMC) e das relações cintura-quadril (RCQ), circunferência abdominal-quadril (RCABDQ) e cintura-altura (RCALT). A carga aterosclerótica coronariana na cineangiocoronariografia foi medida pelo Escore de Friesinger (EF). Aterosclerose significativa foi considerada quando o EF > 5. RESULTADOS: A amostra foi constituída por 337 pacientes, dos quais 213 eram homens (63,2 por cento). A idade média foi de 60,1 ± 10 anos. Somente a RCQ (r = 0,159 e p = 0,003) apresentou correlação linear significativa com a carga aterosclerótica coronariana medida pelo EF. Quando separamos a amostra por gênero, nas mulheres encontramos correlação significativa da RCABDQ (r = 0,238 e p = 0,008) e da RCQ (r = 0,198 e p = 0,028) com o EF. Não se encontrou nos homens correlação entre parâmetros antropométricos e EF. Após os ajustes para as variáveis sexo, idade, HAS, tabagismo e DM, nenhum parâmetro antropométrico foi associado com a carga aterosclerótica coronariana medida pelo EF na amostra total ou separada por gênero. CONCLUSÃO: Nenhum parâmetro antropométrico foi fator de risco independente para a carga aterosclerótica coronariana.

BACKGROUND: The association between anthropometric parameters and atherosclerotic burden is not well established and few studies have addressed this issue. OBJECTIVE: To evaluate the association of different anthropometric parameters with the coronary atherosclerotic burden. METHODS: Adult patients undergoing coronary angiography were enrolled in the study. Sociodemographic characteristics and cardiovascular risk factors were collected through a standardized questionnaire. Weight, height, waist circumference (WC), abdominal circumference (AbC), hip circumference (HC) and neck circumference (NC) were measured and body mass index (BMI), waist-hip ratio (WHR), abdominal circumference-hip ratio (AbCHR) and waist-height ratio (WHtR) were calculated. The atherosclerotic burden at the coronary angiography was measured through Friesinger score (FS). Significant atherosclerosis was considered when FS > 5. RESULTS: The sample consisted of 337 patients, of whom 213 were men (63.2 percent). The mean age was 60.1 ± 10 years. Only WHR (r = 0.159 and p = 0.003) showed a significant linear correlation with the coronary atherosclerotic burden as measured by FS. When the sample was stratified by gender, we found a significant correlation between women's AbCHR (r = 0.238 and p = 0.008) and WHR (r = 0.198 and p = 0.028) with FS. Men showed no correlation between anthropometric parameters and FS. After adjusting for gender, age, hypertension, smoking and DM, no anthropometric parameter was associated with coronary atherosclerotic burden as measured by FS in the total sample or when separated by gender. CONCLUSION: No anthropometric parameter was an independent risk factor for coronary atherosclerotic burden.

Prevalence of diabetes and impaired fasting glucose in a selected population with special reference to influence of family history and anthropometric measurements--the Kolkata policeman study.

AIMS AND OBJECTIVES: The aim of this study was to estimate the prevalence of diabetes as well as IFG in a population of policemen and to evaluate the possible influence of some risk factors. MATERIAL AND METHODS: It was an epidemiological study on a group of policemen in Kolkata. Diagnosis of diabetes was based on history and fasting plasma glucose. The study population was divided in three categories: normoglycaemic, IFG and diabetes. BMI, waist circumference, WHR and waist-to-height ratio were estimated. RESULTS: Out of 2160 subjects with a mean age of 36.4 yrs (between 20 and 60 yrs), diabetes was found in 11.5% (10.4% known and 1.1% newly diagnosed) and 6.2% had IFG. Prevalence of diabetes was found to be increasing with age (p < 0.001). There was no statistically significant difference in BMI when compared between groups (normoglycaemic, IFG and diabetes). Waist circumference, waist-to-height ratio and WHR of normoglycaemic group were significantly less than those with IFG and diabetes; however there was no statistically significant difference between the diabetes and IFG groups. Parental history had significant influence on the prevalence of diabetes; a 37.5% prevalence was found in persons with history of biparental diabetes and 20.8% with uniparental diabetes, whereas it was only 9.9% without any family history (p < 0.01 and p < 0.05, respectively.). CONCLUSION: The prevalence of diabetes in the study population was high and was strongly influenced by family history, age and abdominal adiposity, without having any appreciable impact of BMI.