RESUMO
Abstract The child population is strongly affected by obesity. Accessible and reliable strategies for the obesity diagnosis are of utmost importance.. The aim of this study was to identify childhood obesity according the WHO (World Health Organization): malnourished, healthy weight, overweight and obese. It was collected measures of height, Body Mass Index (BMI), Waist Circumference (WC) and Triceps Skinfold Thickness (TSF) of 449 children from Municipal School of Araras/SP, from 7 to 10 years old. It was performed a Spearman correlation test between BMI, WC and TSF variables. Also, was realized cross tabulation between the found results by the different methods, constructing a contingency table 2x2, with absolute frequency of boys and girls classified as "without overweight" and "with overweight". The concordance between methods was analyzed by kappa index. In the results, 28.3% of children presented overweight according to BMI, with higher prevalence in boys. Generally, the found results through TSF showed strong correlation with both BMI and WC (rs=0.7994 e rs=0.7519, respectively). The same was observed when data was analyzed separately by sex. When crossed the TSF data with BMI and WC, the kappa index demonstrated a satisfactory concordance (0.4419 e 0.5161, respectively). The TSF can be suggested a method to body composition assessment and cardiometabolic risk in children.
Resumo A população infantil mostra-se fortemente atingida pela obesidade. Estratégias acessíveis e confiáveis para o diagnóstico da obesidade são de extrema importância. O objetivo desse estudo foi identificar a obesidade infantil de acordo com a OMS (Organização Mundial de Saúde): desnutridas, peso saudável, sobrepeso e obesas. Foram coletadas medidas de estatura, Índice de Massa Corporal (IMC), Circunferência abdominal (CA) e Dobra Cutânea Tricipital (DCT) de 449 crianças de uma Escola Municipal na cidade de Araras/SP, de 7 a 10 anos de idade. Foi realizado o teste de correlação de Spearman entre as variáveis IMC, CA e DCT. Também foi realizado tabulação cruzada entre os resultados encontrados pelos diferentes métodos, construindo uma tabela de contingência 2x2, com a frequência absoluta de meninos e meninas classificados como "sem excesso de peso" e "com excesso de peso". A concordância entre os métodos foi analisada pelo índice kappa. Nos resultados 28,3% das crianças apresentaram excesso de peso de acordo com o IMC, com maior ocorrência entre os meninos. De modo geral, os resultados encontrados por meio da DCT apresentaram forte correlação tanto com IMC quanto com CA (rs=0,7994 e rs=0,7519, respectivamente). O mesmo foi observado quando analisados separadamente por sexo. Quando cruzados os dados de DCT com os de IMC e CA, o índice kappa revelou uma satisfatória concordância (0,4419 e 0,5161, respectivamente). A DCT pode ser sugerido como um método para investigação de composição corporal e risco cardiometabólico de crianças.
RESUMO
Abstract Glucose uptake is an important phenomenon for cell homeostasis and for organism health. Under resting conditions, skeletal muscle is dependent on insulin to promote glucose uptake.Insulin, after binding to its membrane receptor, triggers a cascade of intracellular reactions culminating in activation of the glucose transporter 4, GLUT4, among other outcomes.This transporter migrates to the plasma membrane and assists in glucose internalization.However, under special conditions such as physical exercise, alterations in the levels of intracellular molecules such as ATP and calcium actto regulate GLUT4 translocation and glucose uptake in skeletal muscle, regardless of insulinlevels.Regular physical exercise, due to stimulating pathways related to glucose uptake, is an important non-pharmacological intervention for improving glycemic control in obese and diabetic patients. In this mini-review the main mechanisms involved in glucose uptake in skeletal muscle in response to muscle contraction will be investigated.(AU)