Lidiane Requia Alli

Pontos de corte para a aptidão cardiorrespiratória e a triagem de fatores de risco para doenças cardiovasculares na infância

The main objective of the study was to analyze and propose news cardiorespiratory fitness cut offs points for 7 to 12-year old school students. The sample was composed of 1,413 students. Cardiorespiratory fitness was measured by the 9-minutes walking/running test. Total cholesterol and systolic and diastolic blood pressure were measured and with their results cardiovascular risk factors reference were designed. The Receiver Operating Characteristic curve between cardiorespiratory fitness and cardiovascular risk factors reference identified the cut offs point values. The bivariate analysis and odds ratio (OR) calculation was used to identify to what extent the individuals that did not reach the proposed cut offs points could show cardiovascular risk factors. The results showed that the cut offs points suggested in this study presented the best balance between sensibility and specificity. The bivariate analysis results showed increased chance of cardiovascular risk for the individuals that did not reach the cut offs points compared to those individuals who did.

Waist circumference as screening instrument for cardiovascular disease risk factors in schoolchildren

OBJECTIVE To propose cutoff points for waist circumference of schoolchildren for the identification of cardiovascular disease risk factors. METHODS This school-based cross-sectional study surveyed 1,413 schoolchildren aged 7 to 12 years old, selected by random cluster sampling. Waist circumference, total cholesterol and systolic and diastolic pressures were measured. Reference values for cardiovascular disease risk factors were developed from measures of total cholesterol and systolic and diastolic blood pressures. The receiver operating characteristic (ROC) curve and bivariate analysis, followed by calculation of sensitivity, specificity and odds ratio, were used in data analysis. RESULTS The cutoff points had area values under the ROC curve ranging between 0.603 and 0.949, while sensitivity and specificity ranged between 0.500 and 1.00. Among all proposals analyzed, the one presented by this study best balanced sensitivity and specificity values. Bivariate analysis followed by odds ratios calculation indicated that subjects with waist circumference above the proposed cutoff points have increased chances of presenting cardiovascular disease risk factors. CONCLUSIONS The cutoff points proposed in the present study seem to be a valid alternative and better balance sensibility and specificity than other proposals for screening students with increased chances of presenting cardiovascular disease risk factors.

Body mass index to the cardiovascular disease risk screening in infancy

OBJECTIVE To purpose news body mass index (BMI) cut offs to 7 to 12 years old scholars. SUBJECTS AND METHODS 1.413 scholars of 7 to 12 years old selected of aleatory way. Were measured the BMI, total cholesterol (TC), and systolic (SBP) and diastolic blood pressure (DBP). To the date analyze were used the receiver operating characteristic curve (ROC curve) and the bivariate analyze. RESULTS The BMI cut offs proposed at this study show adequate capacity to identify true positive and negative to the cardiovascular diseases (CVD) risk factors presence. Besides, these cut offs show higher and more balanced sensibility and specificity values than other cut offs proposals. CONCLUSIONS The BMI proposed at this study configure with as the more adequate alternative to the screening for the scholars with increased chances to carry DCV risk factors.

Associated factors to total cholesterol: school based study in southern Brazil

Resumen Fundamento: Evidencias han sugerido que una parte importante de ninos y adolescentes presenta niveles elevados de colesterol total.Objetivo: Estimar la prevalencia de hipercolesterolemia y factores asociados en escolares de 7 a 12 anos de edad.Metodos: Estudio transversal de base escolar de una muestra aleatoria compuesta por 1.294 escolares de 7 a 12 anos, de Caxias do Sul (RS). Los escolares respondieron una entrevista con informaciones sobre nivel socioeconomico, habitos alimenticios y habitos de actividad fisica y de ocio. Fueron realizadas medidas de colesterol total, de aptitud cardiorrespiratoria, de masa corporal y estatura para el calculo del indice de masa corporal. Para el tratamiento de los datos fueron utilizados los analisis univariado, bivariado y multivariado.Resultados: El analisis multivariado identifico que individuos con nivel socioeconomico alto (OR: 1,70; IC: 1,05-2,75), del sexo femenino (OR: 1,32; IC: 1,03-1,67), y con exceso de peso (OR: 1,40; IC: 1,10-1,77) presentan posibilidadesBACKGROUND Evidence has suggested that a significant proportion of children and adolescents has high levels of total cholesterol. OBJECTIVE To estimate the prevalence of hypercholesterolemia and associated factors in 07-12 year-old school children. METHODS School based cross sectional study of a random sample of 1,294 07-12 year-old school children from Caxias do Sul/RS, Brazil. The students answered an interview with information on socioeconomic status, food habits, and physical and leisure activities. Total cholesterol, cardiorespiratory fitness, body mass and height were measured to calculate body mass index. For the data treatment, univariate, bivariate, and multivariate analyzes were used. RESULTS The multivariate analysis identified that individuals from high socioeconomic level (OR: 1.70; CI: 1.05-2.75), of female gender (OR: 1.32; CI: 1.03-1.67), and overweight (OR: 1.40; IC: 1.10-1.77) had increased chances of having increased total cholesterol (> 3rd tercile). CONCLUSION High total cholesterol levels on 07-12 year-old school children are associated with high socioeconomic level, female gender, and overweight. Encouraging an active life style and appropriate dietary habits can help control cholesterol levels and reduce risk factors.

Colesterol total e fatores associados: estudo de base escolar no sul do Brasil

Resumen Fundamento: Evidencias han sugerido que una parte importante de ninos y adolescentes presenta niveles elevados de colesterol total.Objetivo: Estimar la prevalencia de hipercolesterolemia y factores asociados en escolares de 7 a 12 anos de edad.Metodos: Estudio transversal de base escolar de una muestra aleatoria compuesta por 1.294 escolares de 7 a 12 anos, de Caxias do Sul (RS). Los escolares respondieron una entrevista con informaciones sobre nivel socioeconomico, habitos alimenticios y habitos de actividad fisica y de ocio. Fueron realizadas medidas de colesterol total, de aptitud cardiorrespiratoria, de masa corporal y estatura para el calculo del indice de masa corporal. Para el tratamiento de los datos fueron utilizados los analisis univariado, bivariado y multivariado.Resultados: El analisis multivariado identifico que individuos con nivel socioeconomico alto (OR: 1,70; IC: 1,05-2,75), del sexo femenino (OR: 1,32; IC: 1,03-1,67), y con exceso de peso (OR: 1,40; IC: 1,10-1,77) presentan posibilidadesBACKGROUND Evidence has suggested that a significant proportion of children and adolescents has high levels of total cholesterol. OBJECTIVE To estimate the prevalence of hypercholesterolemia and associated factors in 07-12 year-old school children. METHODS School based cross sectional study of a random sample of 1,294 07-12 year-old school children from Caxias do Sul/RS, Brazil. The students answered an interview with information on socioeconomic status, food habits, and physical and leisure activities. Total cholesterol, cardiorespiratory fitness, body mass and height were measured to calculate body mass index. For the data treatment, univariate, bivariate, and multivariate analyzes were used. RESULTS The multivariate analysis identified that individuals from high socioeconomic level (OR: 1.70; CI: 1.05-2.75), of female gender (OR: 1.32; CI: 1.03-1.67), and overweight (OR: 1.40; IC: 1.10-1.77) had increased chances of having increased total cholesterol (> 3rd tercile). CONCLUSION High total cholesterol levels on 07-12 year-old school children are associated with high socioeconomic level, female gender, and overweight. Encouraging an active life style and appropriate dietary habits can help control cholesterol levels and reduce risk factors.

OBESIDADE E SOBREPESO EM ESCOLARES DE UMA ESCOLA PÚBLICA NA SERRA GAÚCHA

Os objetivos do presente estudo foram verificar a prevalencia de obesidade e sobrepeso em uma escola publica municipal da serra gaucha em dois diferentes momentos: marco de 2008 e dezembro de 2009, e acompanhar uma coorte das criancas que permaneceram na escola no periodo. A obesidade e o sobrepeso foram definidos atraves dos pontos de corte de IMC para sexo e idade segundo a International Obesity Task Force. As prevalencias de obesidadeforam de 10,5% em 2008 e 10,7% em 2009 (sobrepeso = 16,2% em 2008 e 16,4% em 2009). Em relacao a coorte, aprevalencia de obesidade subiu de 8,2% para 11% e o sobrepeso de 15,1% para 23,3%. Conclui-se que as prevalencias de obesidade e sobrepeso encontram-se elevadas e aumentaram no periodo de 21 meses, fato que ser motivo de preocupacao das autoridades locais.

Colesterol total y factores asociados: estudio de base escolar en el sur del Brasil

Resumen Fundamento: Evidencias han sugerido que una parte importante de ninos y adolescentes presenta niveles elevados de colesterol total.Objetivo: Estimar la prevalencia de hipercolesterolemia y factores asociados en escolares de 7 a 12 anos de edad.Metodos: Estudio transversal de base escolar de una muestra aleatoria compuesta por 1.294 escolares de 7 a 12 anos, de Caxias do Sul (RS). Los escolares respondieron una entrevista con informaciones sobre nivel socioeconomico, habitos alimenticios y habitos de actividad fisica y de ocio. Fueron realizadas medidas de colesterol total, de aptitud cardiorrespiratoria, de masa corporal y estatura para el calculo del indice de masa corporal. Para el tratamiento de los datos fueron utilizados los analisis univariado, bivariado y multivariado.Resultados: El analisis multivariado identifico que individuos con nivel socioeconomico alto (OR: 1,70; IC: 1,05-2,75), del sexo femenino (OR: 1,32; IC: 1,03-1,67), y con exceso de peso (OR: 1,40; IC: 1,10-1,77) presentan posibilidadesBACKGROUND Evidence has suggested that a significant proportion of children and adolescents has high levels of total cholesterol. OBJECTIVE To estimate the prevalence of hypercholesterolemia and associated factors in 07-12 year-old school children. METHODS School based cross sectional study of a random sample of 1,294 07-12 year-old school children from Caxias do Sul/RS, Brazil. The students answered an interview with information on socioeconomic status, food habits, and physical and leisure activities. Total cholesterol, cardiorespiratory fitness, body mass and height were measured to calculate body mass index. For the data treatment, univariate, bivariate, and multivariate analyzes were used. RESULTS The multivariate analysis identified that individuals from high socioeconomic level (OR: 1.70; CI: 1.05-2.75), of female gender (OR: 1.32; CI: 1.03-1.67), and overweight (OR: 1.40; IC: 1.10-1.77) had increased chances of having increased total cholesterol (> 3rd tercile). CONCLUSION High total cholesterol levels on 07-12 year-old school children are associated with high socioeconomic level, female gender, and overweight. Encouraging an active life style and appropriate dietary habits can help control cholesterol levels and reduce risk factors.