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Introduction: The social distancing imposed by the COVID-19 pandemic influenced lifestyle and modified dietary patterns. Our objective was to evaluate the consumption of fruits and vegetables (FV), and ultra-processed foods (UPF), before and after the COVID-19 pandemic, as well as to identify the sociodemographic factors associated. Methods: This study used data from the “Convid Adolescents”, a survey on health behaviors that were collected through an online questionnaire self-completed by 9.470 adolescents between 12 and 17 years of age during the pandemic in Brazil in 2020. Individuals were invited to participate through a chain-sampling procedure called “virtual snowballing”. Information about FV, and UPF consumption before and during the pandemic period were reported. The independent variables used were sex, age group, race/color of skin, kind of school, education level of the mother, region of Brazil, financial difficulties during the pandemic, food insecurity, and social restrictions. Logistic regression models were used. Results: There was a reduction in the low consumption of FV (83.5% to 80.3%) and there was no significant difference in the high consumption of UPF (38.9% to 38.1%) before and during the pandemic. The incidence of low consumption of FV and high consumption of UPF during the pandemic was 20% and 13.8%, respectively. Girls, private school adolescents, who reported having food insecurity and financial difficulties during the pandemic were the most affected subgroups. Conclusions: Despite little change in the prevalence of FV and UPF consumption before and during the pandemic, the incidence of high consumption of UPF and low FV consumption was high, and it identified in specific population subgroups.

RESUMO O objetivo do estudo foi analisar a adesão ao distanciamento social, as repercussões no estado de ânimo e as mudanças nos estilos de vida da população adulta brasileira durante o início da pandemia da Covid-19. Estudo transversal com indivíduos adultos residentes no Brasil (n = 45.161) que participaram do inquérito de saúde virtual ConVid - Pesquisa de Comportamentos, no período de 24 de abril a 24 de maio de 2020. Da amostra estudada, apenas 1,5% levou vida normal, sem nenhuma restrição social, e 75% ficaram em casa, sendo que, destes, 15% ficaram rigorosamente em casa. Os sentimentos frequentes de tristeza ou depressão (35,5%), isolamento (41,2%) e ansiedade (41,3%) foram reportados por grande parte da população estudada. Verificou-se que 17% dos participantes reportaram aumento do consumo de bebidas alcoólicas e que 34% dos fumantes aumentaram o número de cigarros. Observou-se aumento no consumo de alimentos não saudáveis e redução da prática de atividade física no período estudado. Conclui-se que houve elevada adesão ao distanciamento social e aumento dos sentimentos de tristeza, depressão e ansiedade, bem como aumento de consumo de alimentos não saudáveis, uso de bebidas alcóolicas e cigarros e redução da prática de atividade física.

Abstract Background Characteristics of the neighborhood built environment are associated with physical activity (PA). However, few studies with representative samples have examined environmental correlates of domain-specific PA in Latin America. We examined the associations of the perceived neighborhood built environment with domain-specific PA in a large sample of adults from eight Latin American countries. Methods This study examined data from 8185 adults (aged 18–65 years) from eight Latin American countries. The Neighbourhood Environment Walkability Survey - Abbreviated (NEWS-A) scale was used to assess perceptions of land use mix–diversity, land use mix-access, street connectivity, walking/cycling facilities, aesthetics, safety from traffic, and safety from crime. Perceived proximity from home to public open spaces (metropolitan parks, playgrounds, public squares) and to shopping centers was also measured. Transport-related and leisure-time PA were assessed using the long form of the International Physical Activity Questionnaire. Both logistic and linear regression models were estimated on pooled data. Results Perceptions of higher land use mix-access (OR: 1.40; 95% CI: 1.22,1.61), the existence of many alternative routes in the neighbourhood (1.12; 1.04,1.20), slow speed of traffic (1.19; 1.03,1.35) and few drivers exceeding the speed limits (1.09; 1.03,1.15) were associated with greater odds of reporting at least 10 min/week of transport-related PA. Perceptions of higher levels of land use mix-diversity, better aesthetics and greater safety from crime, the presence of crosswalks and pedestrian signals, and greater proximity of shopping centers were associated with more min/week of transport-related PA. Perceptions of higher land use mix-diversity (1.12; 1.05,1.20), higher land use mix-access (1.27; 1.13,1.43), more walking/cycling facilities (1.18; 1.09,1.28), and better aesthetics (1.10; 1.02,1.18) were associated with greater odds of engaging in at least 10 min/week of leisure-time PA versus none. Perceptions of higher land use mix-diversity were associated with more min/week of leisure PA. Conclusions Different perceived neighborhood built environment characteristics were associated with domain-specific PA among adults from Latin America countries. Interventions designed to modify perceptions of the neighbourhood built environment might influence initiation or maintenance of domain-specific PA. Trial registration ClinicalTrials. Gov NCT02226627 . Retrospectively registered on August 27, 2014.

Abstract Background Training volume is associated with direct and indirect pathways of bone adaptations. In addition, training volume is a training variable associated with lean soft tissue (LST), which has been shown to be an important predictor of areal bone mineral density (aBMD). Thus, the aim of this study is to investigate the influential role of lean soft tissue (LST) in the association between training volume and aBMD in male adolescent athletes. Methods This cross-sectional study was composed of 299 male adolescent athletes, mean age 14.1 (1.8) years, from 9 different weight-bearing modalities. The Ethical Board approved the investigation. The adolescents reported the number of days per week they trained and the time spent training and, from this, the training volume (h/wk) was estimated. The LST and aBMD were assessed by dual-energy x-ray absorptiometry. Somatic maturation was estimated by the peak of height velocity. Mediation analysis was performed to investigate the role of LST in the association between training volume and aBMD. Level of significance was set at p

ABSTRACT BACKGROUND: Physical activity (PA) practices seem to differ between weekdays and weekends and these pattern changes can affect body fat differently. However, previous studies did not assess the mediation effect of weekday and weekend PA on maintenance of body fat using sophisticated statistical models. OBJECTIVE: To analyze the mediation effect of PA during weekdays and weekends on maintenance of fat mass over a 12-month follow-up. DESIGN AND SETTING: Longitudinal cohort study (12 months) conducted at a public university in Presidente Prudente, Brazil. METHODS: A sample of 225 adults (117 females) was used. Body fatness and fat mass were assessed using dual-energy X-ray absorptiometry. PA levels were assessed using a pedometer. The statistical analysis consisted of paired-sample t tests, independent-sample t tests, Pearson correlations and mediation models. RESULTS: After 12 months, weekend PA had decreased while body composition indicators remained stable (without changes). The correlation between fat mass at baseline and follow-up was high for both sexes (men: 0.966; women: 0.941; P-value = 0.001 for both). Moreover, PA indices were inversely but moderately related to fat mass at baseline and follow-up. Lastly, weekend PA mediated the association between fat mass at baseline and follow-up (P-value < 0.05) by around 2% and 4%. CONCLUSION: Weekend PA mediated the association between fat mass at baseline and fat mass after one year of follow-up among these adults. Further studies are required to investigate the association between physical activity, body fat and other variables such as dietary patterns and sleep time.

We aimed to assess the factors associated with frequent sadness and nervousness in Brazilian adolescents, during the Covid-19 pandemic, in 9470 adolescents (aged 12–17 years), interviewed from June 27 to September 17, 2020. Prevalences and prevalence ratios were estimated according to socio-demographic variables and factors related to family, school, friends, and health. Brazilian adolescents often felt sad (32.4%) and nervous (48.7%). Higher prevalences of these feelings were related to: being female; aged 15–17 year; from families with financial difficulties; having learned little or nothing with remote education; missing friends; having few friends; family disagreements; having regular/bad health before the pandemic; and worsened health and sleep during the pandemic. Higher prevalence of nervousness was also found in adolescents who worked before the pandemic and those who reported lack of concentration and not knowing if they had COVID-19. Sadness and nervousness in Brazilian adolescents is high and the need for action by the government, schools, health services, and parents to mitigate the impact of the pandemic on the physical and mental health of adolescents. Special attention must be paid to adolescents with previous health problems and those belonging to the most socially vulnerable population.

Abstract Aims: This study aimed to compare the sedentary time measured using the ActiGraph GT3X accelerometer with the measurement of sitting and standing time obtained by ActivPAL inclinometers. Methods: This was a cross-sectional study conducted with a sample of 60 schoolchildren (34 males) of one elementary public school in Brazil. The students used both an ActiGraph GT3X accelerometer and an ActivPAL inclinometer, concurrently, positioned at the beginning and removed at the end of the school shift, for four days. For analysis, paired Student's t-tests, Pearson's correlation coefficients, intraclass correlation coefficients, and Bland-Altman plots were used. Results: When comparing sedentary time with sitting time, although correlated (r = 0.53; p < 0.001), the mean minutes were different (134.2 min/day in ActiGraph GT3X vs 120.3 min/day in ActivPAL; p < 0.001), with a bias of 13.9 min/day. When comparing the measurement of sedentary time with the sum of the sitting time plus standing time, different mean minutes were also observed (134.2 min/day in ActiGraph GT3X vs 177.0 min/day in ActivPAL; p < 0.001), and although the correlation was stronger (r = 0.75; p < 0.001), the bias was higher (−42.8 min/day). Conclusion: Sedentary time derived from the ActiGraph GT3X device should be used with caution to evaluate sedentary behavior in a school setting and may be interpreted only as non-moving activities (stationary behavior).

O objetivo deste estudo foi atualizar uma revisão sistemática sobre o uso de transporte ativo para a escola em crianças e adolescentes brasileiros. Todos os estudos foram extraídos da LILACS; BIREME; SCIELO e MEDLINE. A busca foi realizada em manuscritos publicados no período de 2018-2019. Os descritores foram utilizados em português, inglês e espanhol. No geral, 8 manuscritos foram incluídos nesta revisão sistemática, com 1 apresentando dados de três períodos (2009, 2012 e 2015). Os dados do estudo foram obtidos no período de 2009 a 2015 e a faixa etária encontrada entre 7 a 19 anos. Dos artigos selecionados, 2 apresentaram dados nacionais, 1 do Norte, 2 do Nordeste, 1 do Sudeste e 2 do Sul do Brasil. O uso de transporte ativo foi superior ao transporte passivo em 6 ocasiões e seu uso foi comum em meninos do que em meninas (4 de 6 artigos). O uso de transporte ativo ainda é mais comum do que o passivo na maioria das regiões brasileiras, embora algumas cidades tenham o oposto. Os resultados sugerem que a prevalência de transporte ativo é maior em meninos do que em meninas. Políticas públicas devem ser criadas para favorecer o uso do transporte ativo entre os jovens brasileiros.

ABSTRACT BACKGROUND: Although the benefits of physical activity are clear, adherence to physical activity programs is a challenge, especially during transitional phases of life. OBJECTIVE: We aimed to identify adolescents who were more likely to drop out from physical activity and sports participation, from childhood to adolescence. DESIGN AND SETTING: This was a cross-sectional study on retrospective data regarding childhood activity among 803 Brazilian adolescents. The study was conducted at public schools in Londrina, Paraná, in 2011. METHODS: Habitual physical activity, sports participation during childhood, parental physical activity, socioeconomic status and perception of social relationships were self-reported. Cardiorespiratory fitness was estimated via a 20-m shuttle-run test and somatic maturation was estimated from the age at peak height velocity. RESULTS: Our results provided evidence that girls (physical activity: odds ratio, OR: 4.37 [95% confidence interval, CI: 1.86-10.3]; sports: OR: 2.65 [95% CI: 1.39-5.05]) and adolescents with low cardiorespiratory fitness (physical activity: OR: 1.77 [95% CI: 1.13-2.78]; sports: OR: 1.62 [95% CI: 1.15-2.26]) were more likely to drop out from active behaviors. Children with inactive mothers and inactive fathers (OR: 3.55 [95% CI: 1.12-11.3]) also showed a higher dropout rate from physical activity. Adolescents with negative perceptions of friendships (OR: 2.33 [95% CI: 1.21-4.47]) were more likely to drop out from sports. CONCLUSIONS: Higher dropout rates from active lifestyles during childhood were observed among girls and adolescents with low cardiorespiratory fitness. Parental inactivity and negative perceptions of friendships were also potential risk factors for discontinuation of childhood physical activity and sports.

ABSTRACT BACKGROUND: Sports participation plays an important role in bone gain during childhood and adolescence. The aim here was to identify sex-related determinants of bone mineral density (BMD) differences between male and female adolescents, with emphasis on the role of sports participation. DESIGN AND SETTING: Longitudinal study conducted in a public university in Presidente Prudente, Brazil. METHODS: The sample comprised 48 adolescents aged 11-17 years, of both sexes, who were matched according to sex, age and sports participation. BMD was the main outcome, while muscle mass, sports participation, calendar age and biological maturation were treated as covariates. Participants were followed up after nine months. RESULTS: At baseline, BMD values were similar between the sexes. However, adjustment for covariates showed that BMD was higher among girls at all sites, with a contribution from lean soft tissue (LST) in the model (partial eta-squared, ES-r = 0.619 in upper limbs; 0.643 in lower limbs; 0.699 in spine; and 0.599 in whole body). Sports participation only explained the upper-limb variance (ES-r = 0.99). At the follow-up, the results resembled the baseline except in the lower limbs (P = 0.109), in which BMD was similar between the groups. BMD gain over time was similar between girls and boys in all segments, and baseline LST affected upper-limb and whole-body BMD accrual (ES-r = 0.396 and 0.107, respectively). CONCLUSION: Whole-body and specific-site BMD differed between baseline and follow-up. However,BMD accrual was similar between the sexes, given that muscle mass constituted the most relevant determinant of the difference between them.

A ConVid - Pesquisa de Comportamentos foi realizada no Brasil de 24 de abril a 24 de maio de 2020, com o objetivo de investigar as mudanças nos estilos de vida e nas condições de saúde durante a pandemia de COVID-19. Neste artigo, apresentamos a concepção e metodologia da pesquisa. Estudo de corte transversal com a utilização de um questionário pela Internet, com questões validadas em inquéritos de saúde anteriores. O método de amostragem foi o “bola de neve virtual” e foram usados os procedimentos de pós-estratificação. Os resultados relativos às doenças crônicas não transmissíveis e estilos de vida pré-pandemia foram comparados às estimativas da Pesquisa Nacional de Saúde de 2013 e da Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico de 2019. A amostra total foi de 45.161 pessoas. Após a ponderação dos dados, as distribuições amostrais das variáveis demográficas foram semelhantes às populacionais. Apenas as pessoas de baixo nível de instrução foram sub-representadas. A comparação com os resultados anteriores mostrou similaridade na maioria das estimativas: consumo recomendado de frutas e legumes (22,1%), atividade física recomendada (35,2%), fumo de cigarros (12,3%), consumo frequente e abusivo de álcool (6,7%), obesidade (21,2%), prevalências autorreferidas de hipertensão (18,6%), diabetes (7,1%) e doença do coração (4,4%). O inquérito online possibilitou conhecer as condições de saúde da população durante a pandemia. A similaridade dos indicadores com os obtidos em pesquisas tradicionais permitiu validar as estimativas médias. Estudos são necessários para investigar como os efeitos endógenos das redes sociais virtuais podem ser levados em consideração na estimação da variância.

Resumo: O sono é importante para a manutenção da saúde física, emocional e para o bem-estar. Poucos estudos avaliaram o efeito das condições socioeconômicas no sono no período da COVID-19. O objetivo foi analisar o aumento ou a incidência dos problemas do sono segundo condições demográficas e econômicas, prévias à pandemia, e segundo mudanças nas condições financeiras, ocupacionais e tarefas domésticas durante a pandemia. Estudo realizado via web, usando dados de 24 de abril a 24 de maio, com 45.160 brasileiros (18 ou mais), com amostra ponderada pelos dados da Pesquisa Nacional por Amostra de Domicílios (PNAD). Mudança na qualidade do sono (desfecho), renda mensal, efeito na renda familiar, na ocupação/trabalho, sexo, faixa etária, situação conjugal e alteração no trabalho doméstico (exposições) foram reportados. Estimamos os percentuais de início ou aumento dos problemas com o sono e os OR ajustados. A chance de exacerbação dos problemas com o sono foi de 34%, 71% e duas vezes maior nas pessoas com renda inferior a um salário mínimo antes da pandemia, nas que perderam o emprego e naquelas que tiveram a renda muito diminuída/ficaram sem renda, respectivamente. A chance de piorar os problemas do sono foi 82% maior nas mulheres; três vezes maior (OR = 3,14) na população com 18 a 29 anos, em relação aos idosos; e maior com o incremento da quantidade de tarefas domésticas (OR = 2,21). Fatores financeiros e ocupacionais foram determinantes na deterioração da qualidade do sono autorreferida, demandando ações rápidas sobre essas condições a fim de minimizar esse impacto. Gênero, faixa etária e rotinas domésticas também merecem atenção em relação à qualidade do sono.

Abstract: This is a cross-sectional study investigating the factors affecting brazilians’ self-rated health during the COVID-19 pandemic, based on data from the web-based behavior survey. Carried out from April 24 to May 24, 2020, the survey recruited participants by a chain sampling procedure. Its outcome was the worsening of self-rated health during the pandemic. Statistical analysis was based on a hierarchical model of determination. Logistic regression models were used to test the associations between sociodemographic characteristics, pre-existing health conditions, lifestyle indicators and intensity of social restraint measures, and biological and psychological issues during the pandemic. From the total sample of 45,161 participants, 29.4% reported worsening of health state during this period. After adjusting for hierarchical distal factors, the health problems mostly associated with worsening health state were: bad self-rated health (adjusted OR = 4.35, p < 0.001), health care seeking for mental health problem (adjusted OR = 3.95, p < 0.001), and for COVID-19 (adjusted OR = 3.60, p < 0.001). People who experienced sleep problems, worsening of back pain, depression and at least one flu symptom during the pandemic were twice as likely to report worsening of health status. Sedentary and eating behaviors and adherence to social distancing measures showed significant correlation with the outcome. There exists a relation between social, biological, and psychological factors, mediated by lifestyles and variables pertaining to confinement. Altogether, these factors have negatively affected self-rated health during the COVID-19 pandemic in Brazil.

Abstract: This study analyzed changes in the prevalence of physical inactivity and sedentary behaviors according to correlates during the COVID-19 pandemic among Brazilian adults. A national retrospective online survey was conducted with 39,693 Brazilian adults. Physical activity (weekly frequency and daily duration; cut-off point of 150 minutes/week), TV-viewing time and computer/tablet use (daily duration; cut-off point of 4 hours/day) before and during the pandemic period were reported. Sex, age group, schooling level, skin color, per capita income, country region, working status during the quarantine, and adherence to the quarantine were the correlates. Descriptive statistics were used. The prevalence of physical inactivity, high TV-viewing time and computer/tablet use increased, respectively, 26%, 266%, and 38% during the pandemic. While increases in physical inactivity and computer/tablet were more widespread, higher increases in the prevalence of high TV viewing tiem were observed among younger adults (660%), with higher schooling level (437%) and those who were at home office (331%). The prevalence of physical inactivity and sedentary behaviors increased in all population sub-groups during the COVID-19 pandemic in Brazil.

Resumo: O presente estudo tem o objetivo de caracterizar a população idosa brasileira durante a pandemia de COVID-19, considerando suas condições de saúde, socioeconômicas, desigualdade de sexo, adesão ao distanciamento social e sentimento de tristeza ou depressão. Estudo transversal realizado com idosos brasileiros que participaram de um inquérito de saúde (N = 9.173), com método de amostragem “bola de neve virtual”. Os dados foram coletados via web, por meio de questionário autopreenchido. Foram estimadas prevalências, intervalos de confiança e, para verificar a independência das estimativas, utilizou-se o teste qui-quadrado de Pearson. Durante a pandemia, houve diminuição da renda em quase metade dos domicílios dos idosos. O distanciamento social total foi adotado por 30,9% (IC95%: 27,8; 34,1) e 12,2% (IC95%: 10,1; 14,7) não aderiram. Idosos que não trabalhavam antes da pandemia aderiram em maior número às medidas de distanciamento social total. Grande parte apresentou comorbidades associadas ao maior risco de desenvolvimento da forma grave de COVID-19. Sentimentos de solidão, ansiedade e tristeza foram frequentes entre os idosos, especialmente entre as mulheres. A pandemia da COVID-19 aprofundou a desigualdade ao afetar os idosos mais vulneráveis. Estratégias para mitigar a solidão e o distanciamento social devem ser feitas levando-se em conta a vulnerabilidade social e a acentuada diferença entre homens e mulheres quanto à composição domiciliar e às condições socioeconômicas e de trabalho. Recomenda-se o desenvolvimento de pesquisas representativas da população idosa brasileira e que investiguem o impacto da pandemia neste grupo.

RESUMO: Objetivo: Descrever as mudanças nas condições socioeconômicas e de saúde dos brasileiros durante a pandemia de COVID-19. Métodos: Estudo transversal com dados de pesquisa de comportamentos realizada pela internet de 24 de abril a 24 de maio de 2020 com 45.161 participantes recrutados por amostragem em cadeia. Foi feita uma análise descritiva de temas abordados na pesquisa: adesão às medidas de restrição social, diagnóstico do novo coronavírus, situação de trabalho e rendimentos, dificuldades nas atividades de rotina, presença de comorbidades, estado de ânimo e acesso aos serviços de saúde. Foram estimados as prevalências e os intervalos de 95% de confiança. Resultados: Aproximadamente 75% dos brasileiros aderiram à restrição social. Quanto aos sintomas de gripe, 28,1% relatou ter apresentado algum sintoma, mas apenas 5,9% realizou teste para COVID-19. Em relação à situação socioeconômica, 55,1% relatou diminuição do rendimento familiar, e 7% ficou sem rendimento; 25,8% dos indivíduos ficaram sem trabalhar, sendo o grupo de trabalhadores informais o mais afetado (50,6%). Quanto às condições de saúde, 29,4% avaliou que a sua saúde piorou; 45% teve problemas no sono, 40% apresentou, frequentemente, sentimento de tristeza e 52,5% de ansiedade/nervosismo; 21,7% procurou serviço de saúde e, entre estes, 13,9% não conseguiu atendimento. Conclusão: Os achados mostram a importância do controle da pandemia de COVID-19 no Brasil, para mitigar os efeitos adversos na situação socioeconômica e nas condições de saúde relacionados às medidas de restrição social.

Resumo Objetivo Descrever as mudanças nos estilos de vida, quanto ao consumo de tabaco, bebidas alcoólicas, alimentação e atividade física, no período de restrição social consequente à pandemia da COVID-19. Métodos Estudo transversal realizado com dados do inquérito ConVid sobre comportamentos em saúde. Os dados foram coletados por meio de questionário on-line autopreenchido pelos participantes. Procedimentos de pós-estratificação foram empregados para o cálculo das prevalências e intervalos de confiança de 95%. Resultados Participaram 45.161 indivíduos com 18 ou mais anos de idade. Durante o período de restrição social, foi relatada diminuição da prática de atividade física e aumento do tempo em frente a telas, da ingestão de alimentos ultraprocessados, do número de cigarros fumados e do consumo de bebidas alcóolicas. Foram observadas diferenças segundo sexo e faixa etária. Conclusão Os resultados apontam uma piora dos estilos de vida e aumento de comportamentos de risco à saúde.

ABSTRACT BACKGROUND: Our aim was to analyze multilevel correlates of cardiorespiratory fitness (CRF) according to sex, nutritional status and maturity status among adolescents. DESIGN AND SETTING: Cross-sectional study conducted in public schools. METHODS: This was a cross-sectional study on 1,209 adolescents aged between 10 and 17 years. CRF was estimated from the 20-meter shuttle run test. Anthropometric data on body mass index and waist circumference were obtained. Somatic maturation was assessed from the peak height velocity. Questionnaires were used to evaluate socioeconomic variables (family income, parents’ education level and number of siblings) and behavioral variables (physical activity, screen time and alcohol and tobacco consumption) among the parents and adolescents. RESULTS: Boys, adolescents with normal weight and on-time maturers presented greater CRF (P < 0.05). Concerning socioeconomic correlates, girls (tobacco smoking, alcohol consumption, physical activity and screen time), adolescents with normal weight (alcohol consumption, physical activity and screen time), and on-time maturers (alcohol consumption, physical activity during childhood and habitual physical activity) demonstrated higher numbers of behavioral correlates with CRF. Normal-weight adolescents presented a higher number of biological correlates (chronological age, age at peak height velocity and waist circumference). CONCLUSIONS: Different correlates were observed according to sex, nutritional status and somatic maturation status. However, habitual physical activity, waist circumference and chronological age seemed to be the strongest factors associated with cardiorespiratory fitness among adolescents.

ABSTRACT Objective: To evaluate cardiorespiratory fitness’ tracking from childhood to adolescence, as well as to test the moderation role of somatic maturation. Methods: Our sample was composed by 375 children (197 boys), with a baseline age between 7 and 10 years old. The children were followed-up over three years. Body mass and stature were measured as anthropometric indicators and were used to estimate maturity status through Moore’s method. Cardiorespiratory fitness was evaluated through 9-minute running test. Body adiposity was estimated through the subcutaneous skinfold method, with measures of triceps and subscapular skinfolds and used as a covariate. Sample was categorized into tertiles. Thereafter, the Kappa (k) coefficient and Lin’s concordance correlation coefficient (LCCC) tests were adopted to verify stability. Dummy variable in regression was used to test moderation effects. All analyses were conducted in Stata 14.0, adopting p

Objective: To analyze the association of potential risk factors to health with body fatness and insulin resistance. Baseline measures of the ongoing longitudinal Analysis of Behaviors of Children During (ABCD) Growth Study. Materials and Methods: The sample was composed of 280 adolescents of both sexes (198 boys and 82 girls) aged from 10 to 18 years. Four risk factors were considered, as follows: no sports practice, skipping breakfast, poor sleep quality, and TV viewing. The outcomes considered were insulin resistance (HOMA-IR) and body fatness (densitometer scanner). Age, sex, maturity offset, and ethnicity were treated as covariates. Results: No sports practice and skipping breakfast were associated with higher body fatness (Sports practice: Wald: 8.786; p = 0.003. Breakfast: Wald: 9.364; p = 0.002). Poor sleep quality was related to a greater HOMA-IR index (Wald: 6.013; p = 0.014). Adolescents with ≥3 risk factors presented a higher risk of high HOMA-IR (OR = 4.89 (95%CI: 1.61 to 14.84)) than their counterparts with no risk factors. Conclusion: Lifestyle risk factors seem relevant to affect obesity and insulin resistance, while the aggregation of these risk factors affects insulin resistance, independent of adiposity.

ABSTRACT Our aim was to analyze hospitalization due to affective disorders in Brazil from 2003 to 2017 and the possible association with economic indicators during crises. We used data on hospitalizations due to affective disorders within the Brazilian National Health System, obtained from DATASUS; data on health-related behavior (television-viewing and physical activity) from the VIGITEL database; and economic data from the World Bank database. We found that the numbers of hospitalizations increased one year after the 2009 crisis and one year after the 2016 crisis. Negative changes in health-related behavior also followed changes in the numbers of hospitalizations due to affective disorders.

Medidas de distanciamento social adotadas em diversos países para mitigar o impacto da pandemia de COVID-19 podem acarretar efeitos indesejáveis sobre a saúde e o comportamento das populações. Este estudo objetivou investigar o comportamento de fumar na população adulta brasileira durante a pandemia de COVID-19 e analisar os fatores associados ao aumento do consumo de cigarro. Foi realizado um inquérito virtual e a amostra final correspondeu a 45.160 indivíduos. Foram utilizados pesos de pós-estratificação e calculadas as razões de prevalência (RP) brutas e ajustadas por sexo, idade e escolaridade, e os respectivos intervalos de 95% de confiança (IC95%). Modelos de regressão de Poisson com variância robusta foram aplicados para a análise de associação entre o aumento do consumo de cigarros e as variáveis sociodemográficas e as relativas à adesão ao distanciamento social, qualidade do sono, estado de ânimo, alteração no trabalho e nos rendimentos. A prevalência de fumantes foi de 12% (IC95%: 11,1-12,9), dos quais 34% relataram aumento no consumo de cigarros. Esse aumento foi maior entre as mulheres (RP = 1,27; IC95%: 1,01-1,59) e entre indivíduos com o Ensino Médio incompleto (RP = 1,35; IC95%: 1,02-1,79). O aumento do consumo de cigarros esteve associado à piora da qualidade do sono, sentir-se isolado dos familiares, triste ou deprimido, ansioso, ficar sem rendimentos e pior avaliação do estado de saúde. Estratégias de promoção da saúde, de prevenção do uso e de incentivo à cessação do consumo de cigarros, bem como intervenções em saúde mental, devem ser continuadas e reforçadas no contexto de distanciamento social durante a pandemia de COVID-19.

ABSTRACT: Objective: To analyze changes in the lifestyles of Brazilian adolescents during the COVID-19 pandemic. Methods: Cross-sectional study carried out with adolescents who participated in the survey “ConVid Adolescentes – Pesquisa de Comportamentos”. The indicators related to lifestyles before and during the COVID-19 pandemic were evaluated: consumption of healthy and unhealthy foods, physical activity and sedentary behavior, smoking and consumption of alcohol. Prevalence and 95% confidence intervals were calculated for the total population and according to sex and age group. Results: A total of 9,470 adolescents participated in the study. During the period of social distancing, there was an increase in the prevalence of vegetables consumption (from 27.34 to 30.5%), frozen foods (from 13.26 to 17.3%), chocolates and sweets (from 48.58 to 52.51%), and time in front of screens (from 44.57 to 70.15%). On the other hand, there was a decrease in the practice of physical activity (from 28.70 to 15.74%) and in the consumption of alcohol (from 17.72 to 12.77%). Differences were observed according to sex and age group. Conclusion: The results show changes in the lifestyle of adolescents and an increase in health risk behaviors.