O presente estudo avaliou a adequação de uma lista de alimentos e a distribuição do tamanho das porções alimentares em versão simplificada de um questionário quantitativo de freqüência alimentar, visando sua adoção em programas de prevenção e controle de doenças crônicas não transmissíveis. Para esta análise, um inquérito recordatório de 24 horas (IR24) foi obtido em amostra aleatória de funcionários da Administração Central da Secretaria de Estado da Saúde de São Paulo (n =212), durante um estudo piloto do programa de combate ao tabagismo. A lista de alimentos do questionário de freqüência alimentar foi avaliada pela contribuição percentual de alguns de seus nutrientes em relação ao consumo total estimado através do IR24. O tamanho das porções alimentares do questionário de freqüência alimentar foi classificado em pequeno, médio e grande de acordo com a distribuição percentual dos pesos correspondentes às medidas caseiras referidas no IR24, utilizando-se os percentis 25, 50 e 75, respectivamente.

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arterial hypertension was described as the most frequent diagnostic criterion of metabolic syndrome in both sexes in an apparently healthy Japanese population. 2 the association between obesity, especially abdominal obesity, and hypertension has been demonstrated by several studies.3,4 abdominal obesity is clinically measured by waist circumference, 5 which has been referred to as a hypertriglyceridemic waist due to its ability, in association with fasting triglyceride levels, to identify individuals at increased risk for coronary heart disease.6 in addition, this pattern of fatty distribution has been described as an independent risk factor for arterial hypertension 7 and type 2 diabetes 8 and has been associated with the metabolic syndrome in individuals with normal body weight. 9 several mechanisms have been proposed to explain the development of hypertension in obesity.10 in particular, the activation of the systemic and adipose renin-angiotensin system (ras) has been described as a potentially important mechanism, 11,12 even in the presence of sodium retention and volume expansion consequent to enhanced sympathetic activity.13,14 increased levels of circulating components of the ras have been observed in obese individuals, showing a significant decrease after weight loss.12 in addition, a functional ras located in adipose tissue with expression of many of ras components has been demonstrated. 11,[15][16][17] furthermore, paula and colleagues 18 demonstrated that aldosterone has an important role in hypertension-related obesity and that aldosterone antagonism was effective in reducing blood pressure in dogs with obesity-induced hypertension.

Should body mass index be adjusted for relative sitting height in cross-sectional studies of chronic diseases in Japanese-Brazilians?Deve-se corrigir o valor do Índice de Massa Corporal pelo comprimento relativo do tronco em estudos de prevalência de doenças crônicas em nipo-brasileiros?