Cut-off points of adiposity indices associated with insulin resistance in Brazilian postpubertal adolescents.

OBJECTIVES: This study aims to establish cut-off points for lipid accumulation product and tri-ponderal mass index to identify insulin resistance (IR) in Brazilian postpubertal adolescents. METHODS: We conducted an analysis of postpubertal adolescents enrolled in the national school-based cross-sectional study of cardiovascular risks in adolescents (ERICA-BRAZIL) from February 2013 to November 2014. IR was defined by homeostatic model assessment index for IR values ≥2.32 for girls and ≥2.87 for boys. The analysis involved calculating the area under receiver operating characteristic curves, sensitivity values, specificity, positive and negative predictive values, and positive and negative likelihood ratios to determine reference values of indices with optimal performance. RESULTS: The sample was comprised of 14 026 adolescents, with 25.3% (95% confidence intervals: 24.6%-26.1%) exhibiting IR, more prevalent among girls and overweight individuals. The ideal lipid accumulation product cut-off points associated with IR were 13.5 for the total population, 13.8 for male adolescents, and 13.5 for girls. Regarding tri-ponderal mass index, the optimal cut-off values for identifying IR were 14.1, 13.9, and 14.5 kg/m³ in the general sample, boys, and girls, respectively. CONCLUSIONS: This study establishes cut-off points for adiposity indices, demonstrating their effectiveness in screening for IR in postpubertal Brazilian adolescents.

Consumption of in natura and ultra-processed foods in adults: an analysis of social, metabolic, and lifestyle determinants.

OBJECTIVE: To assess the social, metabolic, and lifestyle determinants of consumption of fruits, vegetables, and greens (FVG) and ultra-processed food (ULT) in adults from Pernambuco. METHODS: Cross-sectional and analytical study, conducted in 2015/2016. In addition to sociodemographic variables, the determinants of lifestyle were level of physical activity, alcohol consumption, tobacco use, and metabolic variables were self-reported hypertension, blood glucose, and Body Mass Index (BMI). Consumption was measured by the Food Frequency Questionnaire, then created the Frequency of Consumption Index (SFI) of the mean intake of ULT and FVG foods. The indices of FVG and ULT consumption were transformed into quartiles and these variables were included in the multinomial logistic regression, considering their determinants when p<0.05. RESULTS: The sample was representative of the state, with 1,067 people being interviewed, whose intake of ULT was higher than that of FVG in the lowest and highest quartile of the consumption index. Consumption of fruit and vegetables was higher in higher consumption of alcoholic beverages (p=0.031) and BMI>25 kg/m2 (p=0.047); and lower in the lowest income (p=0.001). ULT intake was higher in young adults (p=0.005), lower income (p=0.044), and controlled blood glucose (p=0.021). Rural areas were 52% less exposed to medium-high ULT consumption (p<0.006). CONCLUSION: Higher rate of ULT consumption in relation to fresh foods, with income as a common determinant, inversely associated with ULT intake and directly related to FVG, which demands structuring policies.

Consumption of in natura and ultra-processed foods in adults: an analysis of social, metabolic, and lifestyle determinants / Consumo de alimentos in natura e ultraprocessados em adultos: uma análise dos determinantes sociais, metabólicos e de estilo de vida

ABSTRACT Objective: To assess the social, metabolic, and lifestyle determinants of consumption of fruits, vegetables, and greens (FVG) and ultra-processed food (ULT) in adults from Pernambuco. Methods: Cross-sectional and analytical study, conducted in 2015/2016. In addition to sociodemographic variables, the determinants of lifestyle were level of physical activity, alcohol consumption, tobacco use, and metabolic variables were self-reported hypertension, blood glucose, and Body Mass Index (BMI). Consumption was measured by the Food Frequency Questionnaire, then created the Frequency of Consumption Index (SFI) of the mean intake of ULT and FVG foods. The indices of FVG and ULT consumption were transformed into quartiles and these variables were included in the multinomial logistic regression, considering their determinants when p<0.05. Results: The sample was representative of the state, with 1,067 people being interviewed, whose intake of ULT was higher than that of FVG in the lowest and highest quartile of the consumption index. Consumption of fruit and vegetables was higher in higher consumption of alcoholic beverages (p=0.031) and BMI>25 kg/m2 (p=0.047); and lower in the lowest income (p=0.001). ULT intake was higher in young adults (p=0.005), lower income (p=0.044), and controlled blood glucose (p=0.021). Rural areas were 52% less exposed to medium-high ULT consumption (p<0.006). Conclusion: Higher rate of ULT consumption in relation to fresh foods, with income as a common determinant, inversely associated with ULT intake and directly related to FVG, which demands structuring policies.

RESUMO Objetivo: Avaliar os determinantes sociais, metabólicos e de estilo de vida do consumo de frutas, legumes e verduras (FLV) e ultraprocessados (ULT) em adultos de Pernambuco. Métodos: Estudo transversal e analítico, realizado em 2015/2016. Além de variáveis sociodemográficas, os determinantes do estilo de vida foram nível de atividade física, doses de bebida alcoólica e uso de tabaco e os metabólicos foram hipertensão autorreferida, glicemia e Índice de Massa Corporal (IMC). O consumo foi mensurado por questionário de frequência alimentar, e, em seguida, criou-se Índice da Frequência de Consumo (IFC) da média de ingestão dos alimentos ULT e FVL. Os índices de consumo de FLV e ULT foram transformados em quartis e essas variáveis incluídas na regressão logística multinomial, considerando seus determinantes quando p<0,05. Resultados: A amostra foi representativa do estado, sendo entrevistadas 1.067 pessoas, cuja ingestão de ULT foi superior à de FVL no menor e no maior quartil do índice de consumo. O consumo de FLV foi superior no maior consumo de bebida alcoólica (p=0,031) e IMC>25 kg/m2 (p=0,047); e inferior na menor renda (p=0,001). O consumo de ULT foi maior em adultos jovens (p=0,005), menor renda (p=0,044) e glicemia controlada (p=0,021). A área rural estava 52% menos exposta ao consumo médio-alto de ULT (p<0,006). Conclusão: Maior índice de consumo de ULT em relação aos alimentos in natura, tendo a renda como um determinante comum, inversamente associada à ingestão de ULT e diretamente relacionada a FVL, o que demanda políticas estruturantes.

Sociodemographic determinants of eating patterns in two Latin American populations.

BACKGROUND: The present study aimed to describe the dietary patterns of a population from Brazil and another from Colombia with respect to understanding their determinants, similarities and differences. METHODS: An analytical cross-sectional study was conducted based on secondary data. The dietary patterns of the adult population of Pernambuco, Brazil, as well as those of the adult population of Antioquia, Colombia, were analysed using principal component analysis method with orthogonal varimax rotation, and a Poisson regression with robust variance was used to verify the association between eating patterns and socio-economic variables. RESULTS: In each population, three eating patterns were identified. One of them related to healthy eating, named "Prudent", was identified in the two populations analysed. In Pernambuco, a food pattern consisting exclusively of foods with some degree of processing was verified, entitled "Processed". The food culture was reflected in the pattern called "Traditional-Regional" in Pernambuco and the "Traditional" and "Regional" patterns in Antioquia. CONCLUSIONS: Income, education, age, family size, food security status and area of residence were presented as determinants of dietary patterns in both populations. Elements of the food transition were found, which seems to have happened more rapidly in Pernambuco. The food groups that make up the dietary patterns of each population are similar, but the foods that constitute them present differences due to their availability depending on aspects such as climate, soil quality, access to water, local culture and food tradition.

Birth-related and current factors associated with physical inactivity in the leisure time in Brazilian adolescents.

BACKGROUND: To determine whether biological and sociodemographic factors at birth and current factors are associated with insufficient physical activity during leisure among Brazilian adolescents. METHODS: A school-based cross-sectional study with national coverage was conducted involving Brazilian adolescents 12 to 17 years of age in municipalities with more than 100 thousand residents. The sample consisted of 74,589 adolescents who participated in the Study of Cardiovascular Risk in Adolescents. Insufficient leisure-time physical activity was categorized based on total volume (<300 minutes/week = insufficiently active; >300 minutes/week = sufficiently active). Poisson regression models were used to assess associated factors. RESULTS: Most adolescents were classified as insufficiently active (54.8%; 95%CI: 53.7-55.9). The variables associated with insufficient physical activity during leisure were the female sex (70.4%; 95%CI: 68.8-71.9), age between 15 and 17 years (57.8%; 95%CI: 56.3-59.2), pertaining to the low or middle class (54.5%; 95%CI: 52.8-56.1), and not being overweight (55.9%; 95%CI: 54.6-57.1). CONCLUSION: Contrary to our hypothesis, birth related factors (e.g., low birth weight, preterm birth and exclusive breastfeeding until 6 months of age) are not associated with physical inactivity. The prevalence of insufficient physical activity during leisure was high among the adolescents evaluated and was associated with sociodemographic characteristics as well as nutritional status. It is necessary to implement strategies focused on physical activity at schools.

Influence of food environment on ultra-processed drinks consumption among an economically vulnerable population in a metropolitan area in Brazil: A multilevel analysis.

Ultra-processed drinks (UPDs) consumption is increasing, and this intake has been associated with the risk of illness and death. Data on individuals (n = 430) and food stores (n = 231) were collected in an economically vulnerable area in Recife-Brazil, and multilevel regression models were applied to assess the association between UPDs consumption with food environment characteristics. The results show 29.5% of individuals consume UPDs, higher UPD consumption was significantly associated with age (OR: 0.96), lower educational levels (OR:2.06), high density of stores predominantly selling UPFs (OR:2.34) and lower availability of FV in stores (OR:0.49). The applied methodology can inform food environment interventions to reduce UPDs consumption.

Associations between biological and behavioral factors in early life and food consumption in Brazilian adolescents: Results from the ERICA study.

The aim of the present study was to determine associations between biological and behavioral factors in early life and food consumption in Brazilian adolescents. The sample was composed of 36,956 adolescents (12-17 years of age) who participated in the "Study of Cardiovascular Risk in Adolescents". Sociodemographic, biological, and behavioral variables were collected using questionnaires self-administered by the adolescents. Early-life factors were assessed using a questionnaire administered to the parents/guardians of the adolescents. Dependent variables related to food consumption (total energy intake and percentages of macronutrient intake [carbohydrates, lipids and proteins]) were measured using the 24-hour recall method and compared to dietary reference intakes. Data analysis was performed with the aid of STATA 14.0, using multiple linear regression analysis with respective ß coefficients. The level of significance was set at 5% (p ≤ 0.05). Adolescents born with low weight had lower energy intake (-94.8 kcal, 95%CI: -177.2; -12.3, p = 0.024) and 1.25% higher carbohydrate intake (95%CI: 0.15; 2.34, p = 0.025) compared to those born with adequate weight. Those who received exclusive breast breastfeeding for three to six months ingested 1.32% more lipids than those who received exclusive breast breastfeeding for less than three months (95%CI: 0.37; 2.26, p = 0.006). In conclusion, low birth weight was associated with lower energy intake and a higher percentage of carbohydrate intake, whereas breastfeeding three to six months was associated with a higher percentage of lipid intake.

Situação de insegurança alimentar em domicílios de Pernambuco, Região Nordeste do Brasil: contribuições para discussão da violação do direito à alimentação / Food insecurity in households in Pernambuco, Northeast region of Brazil: contributions to the discussion on the violation of the right to adequate food

Resumo O objetivo deste estudo foi investigar os fatores associados à insegurança alimentar em domicílios do Estado de Pernambuco, localizado na região Nordeste do Brasil. Trata-se de um estudo transversal realizado em 1.008 domicílios particulares. Para a investigação, utilizou-se a Escala Brasileira de Insegurança Alimentar (EBIA) e foram analisadas associações com variáveis socioeconômicas, demográficas e práticas relacionadas à alimentação. Calculou-se razão de prevalência e ajuste por meio da regressão de Poisson, sendo estatisticamente significantes aquelas associações cujo p≤0,05. Encontrou-se prevalência de 68,4% de insegurança alimentar. Apresentaram associação com insegurança: escolaridade do chefe da família; renda per capita; participação no programa Bolsa Família; número de moradores; regime de ocupação do domicílio; classe social; práticas; e opiniões acerca da alimentação da família. O maior risco de insegurança foi encontrado naqueles com pior condição econômica, em beneficiários do Bolsa Família e naqueles que indicavam a falta de produtos ultraprocessados para melhorar a alimentação da família. Observou-se insegurança alimentar atrelada às condições de vulnerabilidade social e àqueles que não consideravam ter uma boa alimentação. Grande parte dos sujeitos referiram utilizar os recursos do Bolsa Família para aquisição de alimentos, o que reforça a importância dessa estratégia na promoção do acesso à alimentação.

Abstract This study aimed to investigate factors associated with food insecurity in households in the state of Pernambuco, in the Northeast region of Brazil. This is a cross-sectional study carried out in 1,008 private households. The investigation used the Brazilian Food Insecurity Scale (EBIA) and analyzed associations with socioeconomic and demographic variables, as well as practices related to eating. Prevalence ratio and adjustment were calculated using Poisson regression, and associations where p ≤ 0.05 were statistically significant. Food insecurity prevalence was 68.4%. Variables associated with insecurity were: education of the head of the family; per capita income; participation in the Bolsa Família Program; number of residents; occupation of the household; social class; practices and opinions about family eating habits. The greatest insecurity risk was found in those with the worst economic conditions, in beneficiaries of the Bolsa Família Program and in those who considered the lack of ultra-processed products to improve the family's diet. Food insecurity was linked to conditions of social vulnerability and to those who did not perceive that they had a good diet. Most of the subjects reported using resources of the Bolsa Família program to purchase food, which reinforces the importance of this strategy in promoting access to food.

Excess weight in adolescents and associated factors: data from the ERICA study

Abstract Objective: To estimate the prevalence of excessive weight and to identify associations with socioeconomic, demographic, biological, and lifestyle factors in adolescents. Methods: It is a cross-sectional school-based study, with a stratified and complex sample. The evaluated individuals were adolescents (2404), aged 12-17 years old, participating in the Study of Cardiovascular Risk Factors in Adolescents (ERICA). Demographic, socioeconomic, biological, anthropometric, and lifestyle variables were assessed. Poisson regression was used to verify the association between excess weight and independent variables. Results: The prevalence of excessive weight was 26.3% in the study population, being 16.3% for overweight and 10% for obesity. In the multivariate analysis (hierarchical model), were associated with excessive weight: private education network, a higher number of televisions in the residence, eating habits related to the breakfast consumption, snacks purchase in the canteen, snacks in front to screens consumption and consumption of carbohydrates and lipids, in addition to age group (12-14 years) and sexual maturation (post-pubertal). Conclusions: The prevalence of excessive weight among the school adolescents studied is high, with a value higher than the national average and the results of previous studies with adolescents. Its distribution is associated with different factors, which are socioeconomic, demographic, biological, and related to lifestyle, reinforcing the complexity of this condition, which deserves a broad coping approach, involving not only individual efforts but social and public ones as well.