Circadian misalignment proxies, BMI, and chronic conditions: the role for weekday to weekend sleep differences.

OBJECTIVE: To evaluate whether social jet lag (SJL) and weekend catch-up sleep (CUS), proxies of circadian misalignment, were associated with BMI and chronic conditions. METHODS: Participants (n = 2,050,18-65y) were part of a virtual cross-sectional and population-based research. We examined CUS and SJL as continuous and categorical (< 1 h,1-2 h, > 2 h). Linear regression analyses were performed to assess the differences in BMI (outcome) associated with CUS and SJL. Restricted cubic splines were performed to explore the shape of the relationship between weekday-to-weekend variability in sleep duration, midpoint, wake time, and bedtime. Logistic regression models were used to estimate ORs(95%CIs) for chronic conditions and overweight related to CUS and SJL. Analyses were adjusted for sleep duration, biological and behavior-related variables. RESULTS: We found a positive association of SJL and CUS with BMI. The effects remained even after adjustment for weekly sleep duration and demonstrated a proportional increase with the magnitude of sleep variability. Among participants with SJL > 2 h, BMI increased by 2.29 kg/m2 (95%CI:0.84;3.74,p:0.002). They also had 129% higher odds of chronic conditions (95%CI:1.16;4.52, p:0.01) and 119% higher odds of overweight (95%CI: 1.20;3.98,p:0.01). Individuals with CUS > 2 h presented 78% higher odds of overweight (95%CI:1.27;2.50,p:0.001) and an increase of 1.61 kg/m2 in BMI (95%CI: 0.81; 2.40,p < 0.001). CONCLUSIONS: Our findings, which demonstrate that even a slight weekend sleep extension and variability of just 1 h is associated with higher values of BMI, suggest incorporating measures for sleep consistency and regularity into clinical protocols and public health guidelines to prevent and treat obesity and related diseases.

Association of largest meal timing and eating frequency with body mass index and obesity.

BACKGROUND AND AIMS: The circadian pattern of eating behaviors has garnered increasing interest as a strategy for obesity prevention and weight loss. It is believed that the benefits stem from aligning food intake with the body's natural daily rhythms. However, the existing body of evidence is limited in scale and scope and there has been insufficient evaluation of temporal eating behaviors, such as the specific time of day in which the highest calorie consumption occurs, meal frequency, and distribution. This research aims to explore the association between the timing of the largest meal of the day and eating frequency with Body Mass Index (BMI) and obesity. METHODS: Participants (n = 2050, 18-65y) were part of an exploratory cross-sectional and population-based research, with data collection in a virtual environment. Linear regression analyses and restricted cubic splines evaluated differences in BMI associated with independent eating variables [timing of the largest meal, number of meals/day (as continuous and categorical: ≤3 or >3/day), and each largest meal of the day (breakfast/lunch/dinner)]. Logistic regression models were fitted to assess Odds Ratios (OR) and 95 % Confidence Intervals (CI) of obesity associated with the same independent variables. RESULTS: Our main findings were that the timing of the largest meal and reporting dinner as the largest meal were associated with higher values of BMI (respectively, 0.07 kg/m2 and 0.85 kg/m2) and increased odds of obesity [respectively OR(95%CI):1.04(1.01,1.08), and OR(95%CI):1.67(1.18,2.38)]. Those who realized more than 3 meals/day presented lower values of BMI (-0.14 kg/m2) and 32 % lower odds of having obesity [OR(95%CI):0.68(0.52,0.89)]. Reporting lunch as the largest meal also protected against obesity [OR(95%CI):0.71(0.54,0.93)]. These associations were statistically significant and independent of sex, age, marital status, education level, diet quality, sleep duration, and weekly frequency of physical exercise. CONCLUSION: Having the largest meal earlier in the day, concentrating the majority of caloric intake during lunch, and consuming more than three meals a day, may present a promising intervention for preventing and treating obesity/overweight.

Association between sleep duration and latency, nocturnal awakenings, and body mass index among infants / Associação entre duração e latência do sono, despertares noturnos e índice de massa corporal de lactentes

ABSTRACT Objective: To investigate the association between sleep duration, nocturnal awakenings, and sleep latency with body mass index (BMI) at six and 12 months of age. Methods: 179 children from a birth cohort were enrolled. At six and 12 months of age, anthropometric data were obtained using standardized techniques and infants' mothers answered the Brief Infant Sleep Questionnaire for sleep data. The association of BMI with the independent variables (sleep duration, latency, and nocturnal awakenings) was assessed by linear regression models. Analyses were adjusted for potential confounders and a p-value<0.05 was adopted to define statistical significance. Results: For each additional hour of sleep duration, BMI was reduced by 0.15 kg/m² (95% confidence interval [CI] -0.28; -0.01; p=0.03) and each additional minute of sleep latency increased BMI by 0.01 kg/m² (95%CI -0.00; 0.03; p=0.02). These associations were independent of gestational age, child sex, birth weight, duration of exclusive breastfeeding, smoking during pregnancy, and mother's BMI, education, and marital status. Nocturnal awakenings showed no association with the outcome. Conclusions: Our findings suggest that sleep duration and sleep latency time are associated with BMI in the first year of life. Insights into the influence of sleep early in life on weight status may be helpful to complement future nutritional recommendations and prevent and treat obesity.

RESUMO Objetivo: Investigar a associação entre duração do sono, despertares noturnos e latência do sono com o índice de massa corporal (IMC) aos seis e 12 meses de idade. Métodos: foram incluídas 179 crianças de uma coorte de nascimentos. Aos seis e 12 meses de idade, dados antropométricos foram obtidos por meio de técnicas padronizadas e as mães dos lactentes responderam ao Brief Infant Sleep Questionnaire para dados do sono. A associação do IMC com as variáveis independentes (duração do sono, latência e despertares noturnos) foi avaliada por modelos de regressão linear. As análises foram ajustadas para potenciais fatores de confusão e o p-valor<0,05 foi adotado para definir a significância estatística. Resultados: Para cada hora adicional de duração do sono, o IMC foi reduzido em 0,15 kg/m² (intervalo de confiança [IC]95% -0,28; -0,01; p=0,03) e cada minuto adicional no tempo de latência resultou em aumento de 0,01 kg/m² (IC95% -0,00; 0,03; p=0,02) no IMC. Essas associações foram independentes da idade gestacional, sexo da criança, peso ao nascer, duração do aleitamento materno exclusivo, tabagismo durante a gravidez e IMC, escolaridade e estado civil da mãe. Os despertares noturnos não apresentaram associação com o desfecho. Conclusões: Nossos achados sugerem que a duração e a latência do sono estão associadas ao IMC no primeiro ano de vida. Informações sobre a influência do sono no início da vida sobre o status do peso podem ser úteis para complementar futuras recomendações nutricionais e prevenir e tratar a obesidade.

Association between sleep duration and latency, nocturnal awakenings, and body mass index among infants.

OBJECTIVE: To investigate the association between sleep duration, nocturnal awakenings, and sleep latency with body mass index (BMI) at six and 12 months of age. METHODS: 179 children from a birth cohort were enrolled. At six and 12 months of age, anthropometric data were obtained using standardized techniques and infants' mothers answered the Brief Infant Sleep Questionnaire for sleep data. The association of BMI with the independent variables (sleep duration, latency, and nocturnal awakenings) was assessed by linear regression models. Analyses were adjusted for potential confounders and a p-value<0.05 was adopted to define statistical significance. RESULTS: For each additional hour of sleep duration, BMI was reduced by 0.15 kg/m² (95% confidence interval [CI] -0.28; -0.01; p=0.03) and each additional minute of sleep latency increased BMI by 0.01 kg/m² (95%CI -0.00; 0.03; p=0.02). These associations were independent of gestational age, child sex, birth weight, duration of exclusive breastfeeding, smoking during pregnancy, and mother's BMI, education, and marital status. Nocturnal awakenings showed no association with the outcome. CONCLUSIONS: Our findings suggest that sleep duration and sleep latency time are associated with BMI in the first year of life. Insights into the influence of sleep early in life on weight status may be helpful to complement future nutritional recommendations and prevent and treat obesity.

Beyond sleep duration: Sleep timing is associated with BMI among Brazilian adults.

Objectives: To examine the association of sleep duration and timing with BMI among adults. Also, to identify obesogenic and unhealthy behaviors (e.g.diet/sleep quality, physical activity, screen time, smoking) associated with short sleep duration and late bedtime. Participants: Participants (n=755) were part of exploratory, population-based research, with data collection in a virtual environment. Methods: For purposes of characterizing the population we considered short sleepers<7h/night, and the population bedtime median was used to stratify participants into early and late sleepers (before and after 23:08). Student's t-test and chi-square test were performed to assess differences in characteristics between groups. Linear regression analyses were conducted to determine the association of sleep duration, bedtime, and wake-up time with BMI. Quantile regression was estimated for the 25th, 50th, and 75th quantiles to identify the distributional correlations between BMI and sleep variables. Restricted cubic splines were also used to study the shape of the association between sleep-BMI. Analyses were adjusted for potential confounding variables. Results: BMI decreased by 0.40Kg/m2 for each additional hour of sleep duration [95%CI=-0.68,-0.12,p=0.005] and increased by 0.37 kg/m2 for each additional hour of bedtime [95%CI=0.12,0.61,p=0.003]. The association between bedtime and BMI remained even after adjustment for sleep duration. These effects were higher and stronger with higher BMI values (p75th). Wake-up time did not show statistically significant associations. Conclusions: Because we found that beyond sleep duration, bedtime was significantly associated with BMI, our data reflect the pertinence of assessing sleep timing patterns in disentangling sleep-obesity association. Insights into the characteristics, obesogenic and unhealthy behaviors related to short and late sleep may support specific strategies to prevent and treat excess body adiposity and other negative health outcomes.

Association between iron deficiency anemia and sleep duration in the first year of life.

OBJECTIVE: The aim of this study was to investigate the association between iron deficiency anemia and sleep duration in the first year of life. METHODS: A total of 123 infants were investigated, with sleep being evaluated at 3, 6, and 12 months of age and anemia at birth and 6 months. The cutoff points for anemia and short sleep duration were hemoglobin <11 g/dL (at birth and/or 6 months) and <10 h (at 3, 6, and 12 months), respectively. The comparison of the average sleep time between infants with and without anemia was performed using the Student's t-test, and logistic regression models were also used to verify differences in the sleep duration (short/not short) between the groups. Linear regression analyses were conducted to determine the association between sleep duration and hemoglobin values. The analyses were adjusted for potential confounders. RESULTS: Children with anemia were more likely to be short sleepers [odds ratio (95% confidence interval (CI)): 4.02 (1.02-15.76); p≤0.05], and for each unit increase in hemoglobin values, the sleep duration increased by 16.2 min [ß (95%CI): 0.27 (0.00-0.55); p≤0.05), regardless of family income, maternal schooling, gender, and body mass index at birth. CONCLUSIONS: Our results suggest that iron deficiency anemia is associated with short sleep duration in the first year of life and indicate the need for longitudinal investigations, with longer follow-up, to verify the impact of anemia on sleep duration at subsequent ages.

Sleep and circadian hygiene practices association with sleep quality among Brazilian adults.

Objective: To investigate the association of sleep and circadian hygiene practices (sleep-promoting and sleep-disturbing behaviors) with sleep quality indicators. Methods: Participants (n = 2050; 18-65 y) were part of virtual population-based research. Logistic regression models were fitted to assess differences in the OR (95% CI) of poor quality with sleep-promoting/disturbing practices (time-of-day of exercise, pre-bedtime routine, naps, electronic devices with illuminated screens, caffeine and alcohol consumption, and smoking). Linear regression analyses evaluated differences in sleep duration, latency, and awakenings associated with the same variables. Restricted cubic splines were used to study the shape of the association of screen time before bed with sleep duration, latency, and awakenings. Analyses were adjusted for age, sex, region, marital status, educational level, evening diet quality, and BMI. Results: Evening use of electronic devices with illuminated screens showed a negative effect on all sleep parameters. Reporting dinner as the largest meal and evening caffeine consumption was associated with shorter sleep duration and longer sleep latency. Smokers had higher odds of longer latency. A protective effect of morning exercises was demonstrated on sleep quality, latency, and awakenings. Alcohol consumers presented lower odds of poor quality and lower frequency of awakenings. Pre-bedtime practices showed no or negative effect on sleep outcomes. Conclusions: Recommendations to promote sleep quality and prevent sleep-related problems, with corresponding circadian health benefits, should include engaging in regular exercise, preferably in the morning, and avoiding naps, heavy meals close to bedtime, caffeine, smoking, and evening screen exposure.

Association between iron deficiency anemia and sleep duration in the first year of life / Associação entre anemia ferropriva e duração do sono no primeiro ano de vida

Abstract Objective: The aim of this study was to investigate the association between iron deficiency anemia and sleep duration in the first year of life. Methods: A total of 123 infants were investigated, with sleep being evaluated at 3, 6, and 12 months of age and anemia at birth and 6 months. The cutoff points for anemia and short sleep duration were hemoglobin <11 g/dL (at birth and/or 6 months) and <10 h (at 3, 6, and 12 months), respectively. The comparison of the average sleep time between infants with and without anemia was performed using the Student's t-test, and logistic regression models were also used to verify differences in the sleep duration (short/not short) between the groups. Linear regression analyses were conducted to determine the association between sleep duration and hemoglobin values. The analyses were adjusted for potential confounders. Results: Children with anemia were more likely to be short sleepers [odds ratio (95% confidence interval (CI)): 4.02 (1.02-15.76); p≤0.05], and for each unit increase in hemoglobin values, the sleep duration increased by 16.2 min [β (95%CI): 0.27 (0.00-0.55); p≤0.05), regardless of family income, maternal schooling, gender, and body mass index at birth. Conclusions: Our results suggest that iron deficiency anemia is associated with short sleep duration in the first year of life and indicate the need for longitudinal investigations, with longer follow-up, to verify the impact of anemia on sleep duration at subsequent ages.

RESUMO Objetivo: Investigar a associação entre a anemia por deficiência de ferro e a duração do sono no primeiro ano de vida. Métodos: Foram avaliadas 123 crianças, sendo o sono investigado aos três, seis e 12 meses de idade e a anemia ao nascimento e aos seis meses. Utilizaram-se como pontos de corte para anemia e curta duração de sono, respectivamente, hemoglobina<11 g/dL (nascimento e/ou seis meses) e tempo total <10 h (3, 6 e/ou 12 meses). A comparação do tempo médio de sono entre as crianças com e sem anemia foi realizada pelo teste t de Student e modelos de regressão logística foram usados para verificar diferenças na duração do sono (curta/não curta) entre os grupos. Análises de regressão linear foram conduzidas para determinar a associação entre a duração do sono e valores de hemoglobina. As análises foram ajustadas para potenciais confundidores. Resultados: As crianças com anemia tiveram maior chance de apresentar curta duração do sono [odds ratio — OR (intervalo de confiança — IC95%): 4,02 (1,02-15,76); p≤0,05]. Para cada unidade de aumento nos valores da hemoglobina, o tempo de sono aumentou em 16,2 min [β (IC95%): 0,27 (0,00-0,55); p≤0,05), independentemente de renda familiar, escolaridade materna, sexo e índice de massa corporal ao nascimento. Conclusões: Nossos resultados sugerem que a anemia ferropriva está associada à curta duração do sono no primeiro ano de vida e indicam a necessidade de investigações longitudinais, com maior tempo de seguimento, para verificar o impacto da anemia na duração do sono em idades subsequentes.

Breakfast skipping and timing of lunch and dinner: Relationship with BMI and obesity.

OBJECTIVE: To determine whether breakfast-skipping, late-lunch, and late-dinner eating are cross-sectionally associated with higher BMI and obesity. Also, to identify obesogenic behaviors and circadian-related variables, associated with late eating. METHODS: Participants(n = 776) were part of exploratory, population-based research, with data collection in a virtual environment. They were grouped into breakfast-eaters (first meal until 10:00) and skippers (first meal after 10:00), and the population median for the lunch and dinner timing was used to stratify participants into early (lunch/dinner-time before 12:34/20:55) and late (lunch/dinner-time after 12:34/20:55) eaters. Student's t-test and chi-square test were performed to assess differences in characteristics and lifestyle traits between groups. Logistic regression models were used to assess differences in obesity between groups. Linear regression analysis was conducted to determine the association of the clock time of meals with BMI. Analyses were adjusted for potential confounders variables. RESULTS: BMI raised of 0.74 Kg/m2 for each additional hour of lunch-time [95 %CI= 0.31;1.18,P ≤ 0.001]. Breakfast-skippers [OR(95 % CI):1.84(1.02;3.31);P ≤ 0.05] and late-lunch eaters [OR(95 % CI):1.61(1.04;2.49),P ≤ 0.05] had higher odds of having obesity, compared with breakfast-eaters and early-lunch eaters, respectively. These associations were independent of age, gender, diet quality, physical activity duration, and region. No statistically significant differences were found in the comparison between early and late-dinner eaters. CONCLUSIONS: Our results suggest that skipping breakfast and eating late-lunch are associated with BMI and higher odds of having obesity. Insights into the obesogenic behaviors/characteristics related to breakfast-skipping and late-eating may be helpful for future nutritional recommendations and obesity prevention and treatment.

Commensality and eating patterns in adolescents: An analysis from structural equation modeling.

Through structural equation modeling (SEM), this study aimed to evaluate the influence of commensality under the dietary pattern of Brazilian adolescents based on data from the third edition of the National Survey of School Health (PeNSE), conducted in 2015. PeNSE is a cross-sectional survey with a complex probabilistic sampling plan and with representativeness for adolescents in public and private schools in Brazil. Based on recommendations from the Food Guide for the Brazilian Population (Guia Alimentar Para a População Brasileira), we developed a theoretical model, using the SEM model, (stratified by sex) to investigate the relationship between sociodemographic characteristics, handwashing, body satisfaction, and commensality, and their influence on the eating pattern of adolescents. For males, age significantly and inversely proportionally associated with commensal practice (SDE: -0.28, p<0.01). Regarding female subjects, body dissatisfaction was shown to be negatively associated with commensality to a more significant effect when compared to males (SDE: -0.30, p<0.01). On the other hand, commensality positively associated with healthy eating patterns for males (SDE: 0.42, p<0.01) and females (SDE: 0.62, p<0.01). Through the analyses conducted in this study, a positive relationship between commensality and the Healthy Eating Pattern of Brazilian adolescents was observed. There were also different influences for each sex.

Consumo de alimentos açucarados e qualidade do sono no primeiro ano de vida: dados de uma coorte de nascimentos no nordeste do Brasil / Consumo de alimentos azucarados y calidad del sueño en el primer año de vida: datos de una cohorte de nacimiento en el noreste de Brasil / Consumption of sugary foods and quality of sleep in the first year of life: data from a birth cohort in northeastern Brazil

RESUMO Objetivo: investigar a duração do sono (DS), a frequência de despertares noturnos (DN) e o consumo de alimentos açucarados no primeiro ano de vida e verificar a associação entre o consumo desses alimentos e a má qualidade do sono. Métodos: a população do estudo foi composta de 179 crianças integrantes de uma coorte de nascimentos de Rio Largo-AL. As mães foram questionadas sobre a oferta regular de alimentos açucarados (açúcar/farinhas de cereais instantâneas com açúcar/bebidas açucaradas/doces) e o sono foi investigado pelo questionário traduzido e validado Brief Infant Sleep Questionnaire. Foram considerados indicadores de má qualidade do sono DS<12h e DN>2. Os testes de qui-quadrado de Pearson e exato de Fisher foram adotados para verificar associações entre o consumo de açucarados e a má qualidade do sono aos seis e 12 meses (p<0,05). Resultados: mais da metade das crianças apresentou DS<1 2h (60,3%) e cerca de » DN>2. O consumo regular de pelo menos uma das categorias de açucarados foi verificado entre 50,6, 91,1 e 100% das crianças aos três, seis e 12 meses de idade, respectivamente. Não foram encontradas associações entre o consumo desses alimentos e os indicadores de má qualidade de sono. Conclusão: o consumo de açucarados e a má qualidade de sono foram frequentes em nosso estudo, no entanto, não se identificou associação entre as variáveis. Mais investigações são necessárias para elucidar como o sono e a alimentação se inter-relacionam e se potencializam mutuamente como fatores determinantes do crescimento e desenvolvimento de lactentes.

RESUMEN Objetivo: investigar la duración del sueño (DS), la frecuencia de despertares nocturnos (DN) y el consumo de alimentos azucarados en el primer año de vida y verificar la asociación entre el consumo de estos alimentos y la mala calidad del sueño. Métodos: la población de estudio consistió en 179 niños de una cohorte de nacimiento en Rio Largo-AL. Se preguntó a las madres sobre el suministro regular de alimentos azucarados (azúcar / harinas de cereales instantáneas con azúcar / bebidas endulzadas / dulces) y se investigó el sueño mediante el cuestionario traducido y validado BriefInfantSleepQuestionnaire. Fueron considerados indicadores de mala calidad del sueño DS <12h y DN> 2. Se utilizaron las pruebas de chi-cuadrado de Pearson y exacta de Fisher para verificar las asociaciones entre el consumo de azúcar y la mala calidad del sueño a los seis y 12 meses (p <0.05). Resultados: más de la mitad de los niños tenían DS <1 2 h (60,3%) y alrededor de » DN> 2. Se verificó el consumo regular de al menos una de las categorías azucaradas entre el 50,6, el 91,1 y el 100% de los niños a los tres, seis y 12 meses de edad, respectivamente. No se encontraron asociaciones entre el consumo de estos alimentos y los indicadores de mala calidad del sueño. Conclusión: el consumo de azucarados y la mala calidad del sueño fueron frecuentes en nuestro estudio, sin embargo, no se identificó asociación entre las variables. Se necesita más investigación para dilucidar cómo el sueño y la alimentación se interrelacionan y se mejoran mutuamente como determinantes del crecimiento y desarrollo infantil.

ABSTRACT Objective: to investigate sleep duration (SD), frequency of night awakenings (NA) and consumption of sugary foods in the first year of life and to verify the association between consumption of these foods and poor sleep quality. Methods: the study population consisted of 179 children from a birth cohort in Rio Largo-AL. Mothers were asked about the regular supply of sugary foods (sugar/instant cereal flours with sugar/sweetened drinks/sweets) and sleep was investigated by the translated and validated Brief Infant Sleep Questionnaire. DS<12h and AN>2 were considered indicators of poor sleep quality. Pearson's chi-square and Fisher's exact tests were used to verify associations between sugary consumption and poor sleep quality at six and 12 months (p<0.05). Results: more than half of the children had SD<1 2h (60.3%) and about » AN>2. Regular consumption of at least one of the sugary categories was verified among 50.6, 91.1 and 100% of children at three, six and 12 months of age, respectively. No associations were found between the consumption of these foods and indicators of poor sleep quality. Conclusion: sugary consumption and poor sleep quality were frequent in our study; however, no association was identified between the variables. More investigations are needed to elucidate how sleep and feeding are interrelated and mutually potentiate as determinants of infant growth and development.

Early-life determinants of excessive weight gain among low-income children: Examining the adherence of theoretical frameworks to empirical data using structural equation modelling.

BACKGROUND: Although childhood obesity is increasing in low-income regions, theoretical models cannot be adequately applied due to the lack of prospective studies with under 2-year-old children from impoverished populations. OBJECTIVE: To analyse direct and indirect effects of environmental, maternal, and individual factors on excess weight gain among low-income children during the first year of life. METHODS: We analysed data from a prospective birth cohort conducted in Brazil, which followed infants at birth, 3rd, 6th, and 12th month of life (n = 205). The weight-for-age z-score was used to calculate the conditional weight gain (CWG). Direct and indirect effects on CWG were estimated using structural equation modelling. RESULTS: Children's consumption of ultra-processed food (UPF) ≥1 time/day, breastfeeding duration >90 days, and maternal obesity showed a statistically significant direct effect on children's CWG. We observed a positive indirect pathway linking the maternal intake of UPF ≥4 times/day to the CWG, given its direct effect on the infant's UPF consumption. CONCLUSIONS: In this low-income population, women who were frequent users of UPF tended to introduce these products more frequently into their children's diets. The early trade-off trend in children's diet between breastfeeding and UPF was the leading cause of excessive weight gain.

Pesquisa de orçamentos familiares: tendência do consumo de alimentos tradicionais, 2002-2018 / Brazilian household survey: trend in traditional foods consumption, 2002-2018

Descrever a evolução de consumo de alimentos tradicionais e da cesta básica brasileira entre 2002 e 2018. Série temporal do consumo de alimentos tradicionais e da cesta básica brasileira com base nos dados das três últimas Pesquisas de Orçamentos Familiares. A tendência da aquisição alimentar domiciliar per capita anual dos alimentos foi analisada segundo os períodos estudados e as regiões brasileiras. Houve diminuição da aquisição alimentar domiciliar de todos os itens da cesta básica, exceto a manteiga (8,3%). As maiores reduções observadas foram: farinha de mandioca (-69,9%), farinha de trigo (-56,1%) e feijão (-52,3%). Na região Sul ocorreu a maior queda percentual de aquisição de feijão (-56,1%), e o Norte se destacou pela redução acentuada do consumo de carnes (-32,1%) e leites (-57,2%). A diminuição observada no consumo de alimentos tradicionais pode sinalizar possíveis prejuízos à saúde dos indivíduos e perda da identidade cultural alimentar brasileira.

The evolution of consumption of traditional foods and Brazilian basic food basket between 2002 and 2018 is described through a time series of consumption of traditional food and Brazilian basic food basket based on data from Brazilian household surveys. Trend of annual per capita household food acquisition of food was analyzed according to the studied periods and regions in Brazil. Results reveal there was a decrease in household food acquisition of all items in the basic food basket, except butter (8.3%). Greatest reduction rates comprised cassava flour (-69.9%), wheat flour (-56.1%) and beans (-52.3%). In the southern region highest percentage decrease rate comprised the acquisition of beans (-56.1%), whilst in the northern region a sharp reduction in meat (-32.1%) and milk consumption (-57.2%) may be underscored. Decrease in the consumption of traditional foods by the population may detect possible damage to the health of individuals and loss of the Brazilian food culture.

Early onset of overweight among children from low-income families: The role of exclusive breastfeeding and maternal intake of ultra-processed food.

CONTEXT: There is an increasing prevalence of overweight during early childhood in the most impoverished areas in Brazil, although there is a lack of evidence regarding its onset. OBJECTIVES: To investigate the incidence and risk factors associated with overweight among low-income children during their first year of life. METHODS: We analysed data from a prospective birth cohort study conducted in Brazil, which followed-up children at birth, 3rd, 6th and 12th months (n = 196). The overweight incidence (zBMI/A > 2SD) was analysed using the Kaplan-Meier survival estimator and its associated factors by the Coxs regression model. Missing data were addressed with multiple imputations and results on the final adjusted model were calculated by pooling the estimates generated for each imputed dataset. RESULTS: The overweight incidence was 17 events/100 children-year, and most cases occurred before the 6th month. The final model showed that children exclusively breastfed up to 30 days (vs. >30 days; HR 2.68; 95%CI 1.11-6.49) and whose mothers consumed ultra-processed foods more than 4 times/day (vs. ≤4 times/day; HR 3.02; 95%CI 1.28-7.13) presented a higher risk of developing overweight. CONCLUSION: The overweight incidence was high in this impoverished population. Shorter exclusive breastfeeding duration and an unhealthy household food environment provided a short-term risk increase.

[Time-series analysis of the consumption of sweetened soft drinks among adults in Brazil: 2007 to 2014]. / Análise de série temporal do consumo de bebidas açucaradas entre adultos no Brasil: 2007 a 2014.

The scope of this article is to analyze the time-series trend and factors associated with the consumption of soft drinks or packaged fruit juices among adults in Brazil. It is a study based on secondary data from the System of Surveillance of Risk Factors and Protection for Chronic Diseases by Telephone Survey conducted among Brazilian adults between 2007 and 2014. The consumption frequency and intensity (number of cups or cans per week) of soda or packaged juice was checked. Socio-demographic and behavioral data were the independent variables. The time-series trend of annual consumption was evaluated by means of Linear Regression. The factors (age, sex, region, work, schooling and TV screen time) associated with the consumption of these beverages were investigated by Poisson regression. There was a 32.7% reduction in soft drink or packaged juice consumption between 2007 and 2014. Factors associated with higher consumption were: male sex (p = 0.000); 18-29 year-age-range (p = 0.000); residence in the central-west, southeast and southern regions (p = 0.000); lower schooling (p = 0.616); being employed (p = 0.007) and more than 3 hours of TV screen time per day (p = 0.000). The analyses describe a downward trend in the consumption of soda or packaged fruit juice among adults in Brazil from 2007 to 2014.

O objetivo deste artigo é analisar a tendência temporal e os fatores associados ao consumo de refrigerante ou suco artificial entre adultos no Brasil. Estudo desenvolvido a partir de dados secundários do Sistema de Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico, realizado com adultos brasileiros entre 2007-2014. Foi verificada a frequência e a intensidade do consumo (quantidade de copos ou latas por semana) de refrigerante ou suco artificial. Dados sociodemográficos e comportamentais foram as variáveis independentes. A tendência temporal do consumo anual foi avaliada por meio de Regressão Linear. Os fatores associados (idade, sexo, região, trabalho, escolaridade, hábito de assistir TV) ao consumo dessas bebidas foram investigados por Regressão de Poisson. Houve redução de 32,7% do consumo de refrigerante ou suco artificial entre 2007 e 2014. Os fatores associados ao maior consumo foram: sexo masculino (p = 0,000); faixa etária de 18-29 anos (p = 0,000); residência nas regiões centro-oeste, sudeste e sul (p = 0,000); menor escolaridade (p = 0,616); estar empregado (p = 0,007) e assistir TV mais de 3 horas por dia (p = 0,000). As análises descrevem uma tendência de queda no consumo de refrigerante ou suco artificial entre os adultos no Brasil de 2007 a 2014.

Análise de série temporal do consumo de bebidas açucaradas entre adultos no Brasil: 2007 a 2014 / Time-series analysis of the consumption of sweetened soft drinks among adults in Brazil: 2007 to 2014

Resumo O objetivo deste artigo é analisar a tendência temporal e os fatores associados ao consumo de refrigerante ou suco artificial entre adultos no Brasil. Estudo desenvolvido a partir de dados secundários do Sistema de Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico, realizado com adultos brasileiros entre 2007-2014. Foi verificada a frequência e a intensidade do consumo (quantidade de copos ou latas por semana) de refrigerante ou suco artificial. Dados sociodemográficos e comportamentais foram as variáveis independentes. A tendência temporal do consumo anual foi avaliada por meio de Regressão Linear. Os fatores associados (idade, sexo, região, trabalho, escolaridade, hábito de assistir TV) ao consumo dessas bebidas foram investigados por Regressão de Poisson. Houve redução de 32,7% do consumo de refrigerante ou suco artificial entre 2007 e 2014. Os fatores associados ao maior consumo foram: sexo masculino (p = 0,000); faixa etária de 18-29 anos (p = 0,000); residência nas regiões centro-oeste, sudeste e sul (p = 0,000); menor escolaridade (p = 0,616); estar empregado (p = 0,007) e assistir TV mais de 3 horas por dia (p = 0,000). As análises descrevem uma tendência de queda no consumo de refrigerante ou suco artificial entre os adultos no Brasil de 2007 a 2014.

Abstract The scope of this article is to analyze the time-series trend and factors associated with the consumption of soft drinks or packaged fruit juices among adults in Brazil. It is a study based on secondary data from the System of Surveillance of Risk Factors and Protection for Chronic Diseases by Telephone Survey conducted among Brazilian adults between 2007 and 2014. The consumption frequency and intensity (number of cups or cans per week) of soda or packaged juice was checked. Socio-demographic and behavioral data were the independent variables. The time-series trend of annual consumption was evaluated by means of Linear Regression. The factors (age, sex, region, work, schooling and TV screen time) associated with the consumption of these beverages were investigated by Poisson regression. There was a 32.7% reduction in soft drink or packaged juice consumption between 2007 and 2014. Factors associated with higher consumption were: male sex (p = 0.000); 18-29 year-age-range (p = 0.000); residence in the central-west, southeast and southern regions (p = 0.000); lower schooling (p = 0.616); being employed (p = 0.007) and more than 3 hours of TV screen time per day (p = 0.000). The analyses describe a downward trend in the consumption of soda or packaged fruit juice among adults in Brazil from 2007 to 2014.

Weight gain and changes in nutritional status of Brazilian adults after 20 years of age: a time-trend analysis (2006-2012). / Ganho de peso e mudança do estado nutricional de brasileiros após os 20 anos de idade: uma análise de série temporal (2006-2012).

OBJECTIVE: To analyze weight gain (WG) and change in nutritional status (NS) after the age of 20 years in the Brazilian adult population between 2006 and 2012. METHODS: Time series using seven surveys from the Surveillance of Risk and Protective Factors for Chronic Diseases by Telephone Survey (VIGITEL). The analyses were stratified by region, age, sex and education, considering the sampling weights and complex design. In addition, relative weight change (RWC) in the period was determined for each category of independent variables using linear regression models. RESULTS: Analyses showed an increase in WG after 20 years in two vectors: by survey year and age group, where the increase was higher in women. From 2006 to 2012, individuals 25-29 years old (women: RWC = 70%; ßyear = 0.54 kg/year) and 30-34 years old (women: RWC = 56%; ßyear = 0.57 kg/year) showed greater RWC. In 2012, the higher WG occurred in the age groups of 21-24 and 25-29 years old. Regarding the change in NS, individuals who were overweight at 20 years had a higher probability of remaining in this condition (or shifting to obesity) over time. However, among those who had a normal weight, the probability of not becoming overweight or obese was > 80%, independently of sex. CONCLUSION: The Brazilian population displayed progressive WG in adulthood, especially in the first decade after the age of 20, in addition to the period effect. On the other hand, individuals with normal weight in their 20s tended to maintain the same condition.

The Elapsed Time between Dinner and the Midpoint of Sleep is Associated with Adiposity in Young Women.

Meal timing relative to sleep/wake schedules is relevant in the search for obesity risk factors. However, clock time does not accurately characterize the timing of food intake in the context of internal circadian timing. Therefore, we studied elapsed between dinner and the midpoint of sleep (TDM) as a practical approach to evaluate meal timing relative to internal timing, and its implications on obesity. To do so, adiposity, sleep, diet, physical activity, and TDM were measured in 133 women. The participants were grouped into four categories according to their sleep timing behavior (early-bed/early-rise; early-bed/late-rise; late-bed/early-rise; late-bed/late-rise). Differences among the categories were tested using ANOVA, while restricted cubic splines were calculated to study the association between TDM and adiposity. Our results show that, although participants had dinner at about the same time, those that had the shortest TDM (early-bed/early-rise group) were found to have significantly higher BMI and waist circumference values (2.3 kg/m2 and 5.2 cm) than the other groups. In addition, a TDM of 6 h was associated with the lowest values of adiposity. The TDM could be a practical approach to personalizing meal timing based on individual sleep/wake schedules. Thus, according to our findings, dining 6 h before the midpoint of sleep is an important finding and could be vital for future nutritional recommendations and for obesity prevention and treatment.

PRE- AND PERINATAL FACTORS ASSOCIATED WITH WEIGHT GAIN AMONG PRESCHOOL CHILDREN ENROLLED AT DAY CARE CENTERS.

OBJECTIVE: To identify the factors associated with excessive weight gain in preschool children enrolled at daycare centers in a capital of the Northeast region of Brazil. METHODS: It was a cross-sectional study conducted at the five daycare centers located in the city's district of most socioeconomic vulnerability. The study included 326 preschool children (17 to 63 months old) from both genders. The dependent variable was the conditional weight gain (CWG), that represents how much a child, according to their gender, deviated from their peers in relation to the expected weight gain, given sample's birthweight, gender, and age at the survey. Univariate tests (t-test and analysis of variance) were used to compare CWG means according to environmental and biological factors, considering the independent variables with p<0.20 as electable for the multiple linear regression model. In the final model, variables with p<0.05 or that contributed to the model adjustment were kept. RESULTS: Children's mean age was 45.4±9.9 months, and 53.4% of the sample consisted of boys. The prevalence of overweight was 7%. In the multivariable linear regression model, it was possible to identify that the following factors were associated with excessive weight gain among preschool children: less than six prenatal care visits (0.36 SD [95%CI 0.13-0.60]), not rooming-in in the postpartum period (0.30 SD [95%CI 0.03-0.58]), and never breastfed (0.44 SD [95%CI 0.06-0.81]). CONCLUSIONS: Inadequate prenatal (appointments) and perinatal care (mother-infant rooming-in and absence of breastfeeding) were associated with excessive weight gain among low-income preschool children.

Pre- and perinatal factors associated with weight gain among preschool children enrolled at day care centers / Associação entre fatores pré e perinatais e padrão de ganho de peso em pré-escolares de centros de educação infantil

ABSTRACT Objective: To identify the factors associated with excessive weight gain in preschool children enrolled at daycare centers in a capital of the Northeast region of Brazil. Methods: It was a cross-sectional study conducted at the five daycare centers located in the city's district of most socioeconomic vulnerability. The study included 326 preschool children (17 to 63 months old) from both genders. The dependent variable was the conditional weight gain (CWG), that represents how much a child, according to their gender, deviated from their peers in relation to the expected weight gain, given sample's birthweight, gender, and age at the survey. Univariate tests (t-test and analysis of variance) were used to compare CWG means according to environmental and biological factors, considering the independent variables with p<0.20 as electable for the multiple linear regression model. In the final model, variables with p<0.05 or that contributed to the model adjustment were kept. Results: Children's mean age was 45.4±9.9 months, and 53.4% of the sample consisted of boys. The prevalence of overweight was 7%. In the multivariable linear regression model, it was possible to identify that the following factors were associated with excessive weight gain among preschool children: less than six prenatal care visits (0.36 SD [95%CI 0.13-0.60]), not rooming-in in the postpartum period (0.30 SD [95%CI 0.03-0.58]), and never breastfed (0.44 SD [95%CI 0.06-0.81]). Conclusions: Inadequate prenatal (appointments) and perinatal care (mother-infant rooming-in and absence of breastfeeding) were associated with excessive weight gain among low-income preschool children.

RESUMO Objetivo: Identificar fatores associados com o ganho ponderal excessivo entre pré-escolares de Centros de Educação Infantil (CEIs) em uma capital do Nordeste brasileiro. Métodos: Estudo transversal realizado em cinco CEIs situados no distrito de maior vulnerabilidade socioeconômica do município. Foram incluídas 326 crianças de ambos os sexos, com idades entre 17 e 63 meses. A variável dependente foi a evolução ponderal condicional (EPC), a qual representa o quanto uma criança desviou do ganho de peso esperado em relação a seus pares, de acordo com o sexo, o peso ao nascer e a idade no inquérito. Análises univariadas (teste t de Student ou análise de variância) foram utilizadas para comparar as médias da EPC em função de fatores biológicos e ambientais, considerando como elegíveis para o modelo múltiplo de regressão linear as variáveis independentes com p<0,20; permaneceram no modelo final aquelas que apresentaram p<0,05 ou que contribuíram no ajuste do modelo. Resultados: A média de idade foi de 45,4±9,9 meses e 53,4% eram meninos. A prevalência de excesso de peso foi de 7%. No modelo múltiplo de regressão linear, identificamos que realizar menos de 6 consultas pré-natal (DP=0,36; IC95% 0,13-0,60), não ter permanecido em alojamento conjunto no pós-parto (DP=0,30; IC95% 0,03-0,58) e nunca ter sido amamentado (DP=0,44; IC95% 0,06-0,81) foram fatores associados com o ganho excessivo de peso entre pré-escolares. Conclusões: A inadequação dos cuidados pré-natal (consultas) e perinatal (não permanecer em alojamento conjunto e ausência da amamentação) se associaram com o ganho excessivo de peso entre pré-escolares de baixa renda.