Reginaldo Gonçalves

Selected anthropometric variables and aerobic fitness as predictors of cardiovascular disease risk in children.

The aim of this study was to assess the suitability of body mass index, waist circumference, waist-to-height ratio and aerobic fitness as predictors of cardiovascular risk factor clustering in children. A cross-sectional study was conducted with 290 school boys and girls from 6 to 10 years old, randomly selected. Blood was collected after a 12-hour fasting period. Blood pressure, waist circumference (WC), height and weight were evaluated according to international standards. Aerobic fitness (AF) was assessed by the 20-metre shuttle-run test. Clustering was considered when three of these factors were present: high systolic or diastolic blood pressure, high low-density lipoprotein (LDL) cholesterol, high triglycerides, high plasma glucose, high insulin concentrations and low high-density lipoprotein (HDL) cholesterol. A ROC curve identified the cut-off points of body mass index (BMI), WC, waist-to-height ratio (WHtR) and AF as predictors of risk factor clustering. BMI, WC and WHR resulted in significant areas under the ROC curves, which was not observed for AF. The anthropometric variables were good predictors of cardiovascular risk factor clustering in both sexes, whereas aerobic fitness should not be used to identify cardiovascular risk factor clustering in these children.

Content Validation of a Catalog of Exercises for Judo.

This study aimed to assess the content validity of a catalog of 76 judo exercises. Two groups of raters comprising 16 judo experts evaluated the following content validity indicators: Clarity of Language, Practical Pertinence, Theoretical Relevance, and the Dimension of each exercise. The results confirmed the content validity of the judo training catalog with indicators showing scores greater than 0.80. These findings suggest that all 76 judo exercises are pertinent, representative of judo training and understandable for judo coaches. Thus, this catalog of judo exercises may help judo coaches in the selection and recording of exercises.

Associação de índice de massa corporal e aptidão física aeróbica com fatores de risco cardiovascular em crianças

Resumo Objetivo Identificar a associacao do indice de massa corporal e aptidao fisica aerobica com fatores de risco de doencas cardiovasculares em criancas. Metodos Estudo transversal realizado na cidade de Itauna-MG no ano de 2010 com 290 escolares de 6 a 10 anos de ambos os sexos, aleatoriamente selecionados. Criancas de escolas da zona rural e aquelas com limitacoes medicas para pratica de atividade fisica nao foram incluidas. Coletou-se o sangue apos jejum de 12 horas. A pressao arterial, a estatura e o peso foram avaliados segundo padroes internacionais. Foram considerados fatores de risco cardiovascular: hipertensao arterial, colesterol total, LDL, triacilglicerois e insulinemia elevados e HDL baixo. A analise estatistica incluiu a Correlacao de Spearman e a Regressao Logistica, com os fatores de risco cardiovascular como variaveis dependentes. Resultados Correlacoes significativas foram encontradas, nos dois sexos, entre indice de massa corporal e aptidao fisica aerobica com a maioria dos fatores de risco cardiovascular. Criancas dos dois sexos com indice de massa corporal acima do percentil 75 apresentaram chances aumentadas para insulinemia alterada e agrupamento de fatores de risco cardiovascular. Meninas com aptidao fisica aerobica no primeiro quartil apresentaram chances aumentadas para insulinemia alterada e agrupamento de fatores de risco cardiovascular. Conclusao As associacoes significativas e as chances aumentadas para presenca de fatores de risco cardiovascular em criancas com menor aptidao fisica aerobica e maior indice de massa corporal justificam o uso dessas variaveis no monitoramento da saude em pediatria.Objective: To identify the association between both, body mass index and aerobic fitness, with cardiovascular disease risk factors in children. Methods: Cross-sectional study, carried out in Itaúna-MG, in 2010, with 290 school children ranging from 6 to 10 years-old of both sexes, randomly selected. Children from schools located in the countryside and those with medical restrctions for physical activity were not included. Blood sample was collected after a 12-hour fasting period. Blood pressure, stature and weight were evaluated in accordance with international standards. The following were considered as cardiovascular risk factors: high blood pressure, high total cholesterol, LDL, triglycerides and insulin levels, and low HDL. The statistical analysis included the Spearmans coefficient and the logistic regression, with cardiovascular risk factors as dependent variables. Results: Significant correlations were found, in both sexes, among body mass index and aerobic fitness with most of the cardiovascular risk factors. Children of both sexes with body mass index in the fourth quartile demonstrated increased chances of having high blood insulin and clustering cardiovascular risk factors. Moreover, girls with aerobic fitness in the first quartile also demonstrated increased chances of having high blood insulin and clustering cardiovascular risk factors. Conclusion: The significant associations and the increased chances of having cardiovascular risk factors in children with less aerobic fitness and higher levels of body mass index justify the use of these variables for health monitoring in Pediatrics.

Aplicabilidade do indice adiposidade corporal na estimativa do percentual de gordura de jovens mulheres brasileiras

INTRODUCCION: La estimativa de la composicion corporal es un campo de estudio importante en el pronostico y diagnostico de enfermedades degenerativas. OBJETIVO: Analizar la aplicabilidad del Indice de Adiposidad Corporal (IAC) y el metodo de pliegues cutaneos. METODOS: La muestra fue constituida por 19 adultas jovenes con promedio de edad de 24,53 ± 2,65 anos, sometidas a evaluacion antropometrica (circunferencias y pliegues cutaneos) y absorciometria por doble emision de rayo X (DXA). Los valores estimados fueron comparados al valor de referencia por medio del test t pareado y por el analisis del nivel de asociacion entre los metodos por la correlacion de Pearson; el nivel de significancia fue de p 0,05) con nivel de asociacion fuerte (r = 0,879). CONCLUSION: Aunque el IAC no presente diferencia para los valores estimados, queda evidente la necesidad de mas estudios sobre la aplicabilidad del metodo en la poblacion brasilena.

Applicability of body adiposity index in estimating body fat of young brazilian women

INTRODUCCION: La estimativa de la composicion corporal es un campo de estudio importante en el pronostico y diagnostico de enfermedades degenerativas. OBJETIVO: Analizar la aplicabilidad del Indice de Adiposidad Corporal (IAC) y el metodo de pliegues cutaneos. METODOS: La muestra fue constituida por 19 adultas jovenes con promedio de edad de 24,53 ± 2,65 anos, sometidas a evaluacion antropometrica (circunferencias y pliegues cutaneos) y absorciometria por doble emision de rayo X (DXA). Los valores estimados fueron comparados al valor de referencia por medio del test t pareado y por el analisis del nivel de asociacion entre los metodos por la correlacion de Pearson; el nivel de significancia fue de p 0,05) con nivel de asociacion fuerte (r = 0,879). CONCLUSION: Aunque el IAC no presente diferencia para los valores estimados, queda evidente la necesidad de mas estudios sobre la aplicabilidad del metodo en la poblacion brasilena.

ADAPTAÇÃO TRANSCULTURAL DO QUESTIONÁRIO THREE DAY PHYSICAL ACTIVITY RECALL

Introduction: There are several tools that measure physical activity in Brazil. One of them is the Three Day Physical Activity Recall; however, until now, no tool was subjected to cross-cultural adaptation. Objective: To describe the procedures and criteria for selecting the Three Day Physical Activity Recall on the conceptual, semantic and items equivalence, which resulted in the Brazilian version for adolescents from 10 to 12 years. Methods: Articles have been compiled containing the self-report instrument that had as variables of interest the level of physical activity and energy cost. A survey was conducted in the following databases: BIREME, LILACS, MEDLINE, PubMed, SciELO, Web of Science, and SPORTDiscus. The steps of cultural adaptation came next: 10 doctors and 30 members of the target population participated of the evaluation and adjustment of the construct to the Brazilian culture (conceptual and item equivalence) and the Portuguese version of the instrument followed all recommendations for semantic equivalence. Results: Here we present the evaluations of doctors on the Portuguese version of the instrument, involving questions about regionality of activities, cognitive impairment to self-report, instructions, ability to measure physical activity and their domains. The different versions of the translation and retranslation of the tool, highlighting on the changes requested as well as the final version are presented. Conclusions: Since the prerequisites of cultural adaptation have been met, it was concluded that the tool is adapted for the target population and culture; nevertheless, the psychometric qualities, reproducibility and validity, construct and criterion must be tested.

Factors associated with overweight and body mass index in three schools of Itaúna - MG

Objective: to verify the prevalence and factors associated with overweight and body mass index (BMI) in schoolchildren. Methods: this was a cross-sectional epidemiological study in which 60 children from six to 10 years of age were evaluated in three public schools of Itauna-MG. They were classified by BMI/age, and their parents answered a questionnaire about demographic data, medical and family history, lifestyle, and semi-quantitative food frequency. The data were evaluated with the aid of the Excel and SPSS software. Statistical tests for logistic and linear multiple regressions were used. Results: the prevalence of overweight, eutrophy, and low weight, identified by BMI/age, amounted to 21.6% (p = 13), 76.7% (p = 46), and 1.7% (p = 1), respectively. Overweight was independently associated with maternal obesity (p = 0.004). A direct association was found between BMI and maternal obesity (p = 0.02), intake of breads (p = 0.03) and snacks such as chips (p = 0.08), and an inverse association was observed between BMI and yogurt (p = 0.007) and ice cream (p = 0.09) intake. Conclusion: the prevalence of overweight found in the studied population was high demonstrating the importance of more attention to this aspect because it can be associated with potentially modifiable factors, such as dietetics.

Efeito de 12 semanas de treinamento aeróbio em jejum sobre o emagrecimento

This study aimed to verify 12 weeks of aerobic training effect on fasting weight loss performed between October 2014 and March 2015 at Pitágoras a city in Betim/MG. The sample was 33 sedentary women without metabolic diseases. Initially the volunteers were submitted to aerobic capacity test (Balke-Ware) and body composition evaluation. It was recorded the total body mass (TBM), muscle mass (MM), fat mass (FM) and percentage of body fat (PBF) by tetrapolar bioimpedance. Then the volunteers were randomly divided into three groups, who performed aerobic training in a treadmill. One group performed the training in fasting (FT) in the post-absorptive period, with low intensity (50% of the heart rate reserve), while another group performed the same training, but in fed state (PT). The third group ran the same distance from the other groups, but with higher intensity (HIT) (70% of the heart rate reserve) in fed state. To compare body composition and aerobic capacity before and after training it was used the paired t test, while to compare the percentage change of MCT and the PGC between groups it was used the ANOVA one-way test. The results showed that the aerobic capacity increased in all groups, but the increase was greater in the HIT. Further, the HIT presented a significant reduction in FM and PBF, while the FT and PT groups showed no significant changes in body composition. No significant differences were found between the groups in relation to variation of PGC and PBF. It was concluded that fasted aerobic training has no additional effect on weight loss.

Aplicabilidad del indice de adiposidad corporal en la estimativa del porcentual de grasa de jovenes mujeres brasilenas

INTRODUCCION: La estimativa de la composicion corporal es un campo de estudio importante en el pronostico y diagnostico de enfermedades degenerativas. OBJETIVO: Analizar la aplicabilidad del Indice de Adiposidad Corporal (IAC) y el metodo de pliegues cutaneos. METODOS: La muestra fue constituida por 19 adultas jovenes con promedio de edad de 24,53 ± 2,65 anos, sometidas a evaluacion antropometrica (circunferencias y pliegues cutaneos) y absorciometria por doble emision de rayo X (DXA). Los valores estimados fueron comparados al valor de referencia por medio del test t pareado y por el analisis del nivel de asociacion entre los metodos por la correlacion de Pearson; el nivel de significancia fue de p 0,05) con nivel de asociacion fuerte (r = 0,879). CONCLUSION: Aunque el IAC no presente diferencia para los valores estimados, queda evidente la necesidad de mas estudios sobre la aplicabilidad del metodo en la poblacion brasilena.