Questionário de frequência alimentar para adultos da região Nordeste: ênfase no nível de processamento dos alimentos

OBJECTIVE To develop a quantitative Food Frequency Questionnaire (FFQ) for adults in the Northeast region of Brazil, in order to identify the frequency of consumption of foods considered to be of protection and risk for chronic non-communicable diseases (NCDs), grouping food items by processing level. METHODS To develop the FFQ, data from 7,516 adults from Northeastern Brazil were used, extracted from the 2008–2009 Household Budget Survey. The food lists were elaborated according to the methodology of the relative contribution of each item, identifying foods with the highest relative contribution for macronutrients, fiber, saturated fat, trans fat, sodium and potassium. All foods whose contribution sum was up to 90% composed such lists. The final structure of the FFQ organized the food items in order to respect the mental image of the meals. RESULT The FFQ resulted in 83 food items, distributed in minimally processed, processed and ultra-processed. We chose the previous year as the time to estimate food consumption, and frequency options ranged from “never” to “10 times”. The instrument includes guidelines for filling and collects data on serving sizes (small, medium, large and extra-large), as well as additional information on culinary preparations. There was a high percentage of people who were overweight (44.1%). CONCLUSION The study culminated in an FFQ to identify the frequency of consumption of foods considered protective and risk for NCDs. The instrument can support epidemiological studies that evaluate outcomes related to the diet of adults considering the level of food processing, in accordance with the Guia alimentar para a população brasileira .OBJETIVO Desenvolver um Questionário de Frequência Alimentar (QFA) quantitativo para adultos da região Nordeste do Brasil, com o fim de identificar a frequência de consumo de alimentos considerados de proteção e risco para doenças crônicas não transmissíveis (DCNT), agrupando os itens alimentares por nível de processamento. MÉTODOS Para desenvolver o QFA foram utilizados dados de 7.516 adultos do Nordeste do Brasil, extraídos da Pesquisa de Orçamentos Familiares 2008–2009. As listas de alimentos foram elaboradas segundo a metodologia da contribuição relativa do item, nas quais foram identificados os itens alimentares com maior contribuição relativa para macronutrientes, fibra, gordura saturada, gordura trans, sódio e potássio. Tais listas foram compostas de todos os alimentos cujo somatório de contribuição foi de até 90%. Na estrutura final do QFA, os itens alimentares foram organizados de modo a respeitar a imagem mental das refeições. RESULTADOS O QFA resultou em 83 itens alimentares, distribuídos em minimamente processados, processados e ultraprocessados. O ano anterior foi escolhido como tempo para estimar o consumo dos alimentos, e as opções de frequência variaram de “nunca” até “10 vezes”. O instrumento inclui orientações para preenchimento e colhe dados sobre o tamanho das porções (pequena, média, grande e extragrande), bem como informações complementares sobre as preparações culinárias. Registrou-se um percentual elevado de pessoas com excesso de peso (44,1%). CONCLUSÃO O estudo culminou em um QFA para identificar a frequência de consumo de alimentos considerados de proteção e risco para DCNT. O instrumento pode subsidiar estudos epidemiológicos que avaliem desfechos relacionados à dieta de adultos considerando o nível de processamento de alimentos, em consonância com o Guia alimentar para a população brasileira

Prediction equations for fat and fat-free body mass in adolescents, based on body circumferences

Fat mass (FM) and fat-free body mass (FFB) are important parameters for assessing nutritional status, since they are associated with higher prevalence of excess body fat and malnutrition worldwide. To develop prediction equations for fat and fat-free body mass in adolescents using body circumferences. This cross-sectional study included 218 adolescents (10-16 years) with normal weight as defined by body mass index. FM(Pred) and FFB(Pred) were estimated using stepwise multiple linear regression, considering age and body circumferences. Response variables, FM(BIA) and FFB(BIA) were estimated using bioelectric impedance analysis (BIA). The accuracy of the prediction equations was evaluated using the coefficient of determination (R(2)) and Akaike's Information Criterion (AIC). The best prediction equations for males were FM(Pred) = -7.114 - 0.592(age) - 0.958(wrist)+0.191(hip)+0.295(abdomen); R(2) = 0.552; AIC = 416.04 and FFB(Pred) = - 52.180+1.913(age)+1.954(wrist)+1.635(forearm); R(2) = 0.869; AIC = 578.24. For females, the best equations were FM(Pred) = -17.580 - 0.678(wrist)+0.221(abdomen)+0.241(hip)+0.202(proximal thigh) - 0.228(calf); R(2) = 0.838; AIC = 415.36 and FFB(Pred) = -31.066+0.90(age)+1.090(wrist) - 0.139(abdomen)+0.326(hip)+0.632(calf); R(2) = 0.878; AIC = 512.48. The equations developed to estimate fat body mass in females and fat-free body mass in both genders had high adjusted coefficients of determination and are therefore preferable to those derived using BIA

PERFIS ALIMENTARES E NUTRICIONAIS DE ADOLESCENTES BRASILEIROS

The objective of this study was to analyze the prevalence of dietary and nutritional profiles of Brazilian adolescents and their associations with sociodemographic, behavioral and sustainability factors. Data from 16,556 adolescents evaluated by the 2015 National Adolescent Health Survey were used. The information was generated from Descriptive and Correspondence Analysis of the main variables - food and nutritional profiles (combination of dietary pattern categories with nutritional status categories) - and secondary. The most prevalent profile was identified as the type of dietary pattern (BP) with the lowest nutritional risk (NB) with normal weight, grouping 42.6% (95%CI: 41.3-43.7) of the adolescents, followed by the PA profiles of higher NB with normal weight (28.1%; 95%CI: 27.1-29.0), BP of lower NB with excess weight (17.5%; 95%CI: 16.7-18.3), BP of higher NB with excess weight (9.2%; 95%CI: 8.6-9.8), BP of lower NB with thinness (1.5%; 95%CI: 1.3-1.8) and BP of greater NB with thinness (1.1%; 95%CI: 0.9-1.4). These food and nutritional profiles coexist with different ways of life among Brazilian adolescents marked by sociodemographic, behavioral and sustainability aspects. The identification of these profiles and how they are distributed in the population allows for a better diagnosis of the realities of adolescents and the planning of more targeted and resolute feeding actions.O objetivo desse trabalho foi analisar as prevalências dos perfis alimentares e nutricionais de adolescentes brasileiros e suas associações com fatores sociodemográficos, comportamentais e de sustentabilidade. Foram utilizados dados de 16.556 adolescentes avaliados pela Pesquisa Nacional de Saúde do Escolar 2015. As informações foram geradas a partir de Análise descritiva e de Correspondência das variáveis principais – perfis alimentares e nutricionais (combinação de categorias do padrão alimentar com categorias do estado nutricional) - e secundárias. Identificou-se como perfil mais prevalente o tipo padrão alimentar (PA) de menor risco nutricional (RN) com eutrofia agrupando 42,6% (IC95%: 41,3-43,7) dos adolescentes, esse foi seguido pelos perfis PA de maior RN com eutrofia (28,1%; IC95%: 27,1-29,0), PA de menor RN com excesso de peso (17,5%; IC95%:16,7-18,3), PA de maior RN com excesso de peso (9,2%; IC95%:8,6-9,8), PA de menor RN com magreza (1,5%; IC95%:1,3-1,8) e PA de maior RN com magreza (1,1%; IC95%: 0,9-1,4). Esses perfis alimentares e nutricionais coexistem com formas de vida diferentes entre os adolescentes brasileiros marcadas por aspectos sociodemográficos, comportamentais e de sustentabilidade. A identificação desses perfis e como se distribuem na população permite um melhor diagnósticos das realidades dos adolescentes e ao planejamento de ações de alimentação mais direcionadas e resolutivas

Dietary and Nutritional Profiles among Brazilian Adolescents

(1) Background: The present study analyzed the prevalence of dietary and nutritional profiles among Brazilian adolescents and their associations with social determinants of health. (2) Methods: A population-based survey was administered to 16,409 adolescents assessed by the 2015 National School Health Survey. A multivariate model of dietary and nutritional profiles was estimated from correspondence analysis. (3) Results: The dietary and nutritional profiles more prevalent among Brazilian adolescents were “lower nutritional risk dietary pattern and eutrophic” (42.6%), “lower nutritional risk dietary pattern and overweight” (6.8%), and “higher nutritional risk dietary pattern and overweight” (6.0%). Healthier profiles were associated with less urbanized territories, health-promoting behaviors, and families with worse material circumstances. The less healthy profiles were associated with more urbanized environments, health risk behaviors, and families with better material circumstances. (4) Brazilian adolescents have different dietary and nutritional profiles that are characterized by sociopolitical and economic contexts, family material and school circumstances, and the behavioral and psychosocial health factors of the individuals. All of this points to the social determination of these health problems among adolescents in Brazil