[Temporal trend of physical activity in Brazilian adolescents: analysis of the Brazilian National Survey of School Health from 2009 to 2019]. / Tendência temporal de atividade física em adolescentes brasileiros: análise da Pesquisa Nacional de Saúde do Escolar de 2009 a 2019.

This study aimed to analyze the physical activity trend of Brazilian schoolchildren and the associations with demographic, socioeconomic, and behavioral variables by using the Brazilian National Survey of School Health (PeNSE) in its four editions - 2009, 2012, 2015, and 2019. Data from students (13-17 years old) participating in the four editions of the PeNSE (n = 392,922) were used. We describe the percentage of active, mean, and percentile values of moderate to vigorous intensity physical activity in minutes/week. Poisson's regression was adjusted for gender, age, skin color, goods score, and sedentary behavior (≥ 2 hours/day watching TV and ≥ 3 hours/day sitting time). As a limitation, the PeNSE/2009 sample refers only to the Brazilian capital cities. The percentage of active students decreased from 43.1% in 2009 to 18.2% in 2019. The mean moderate to vigorous intensity physical activity of PeNSE/2009 (mean = 318.4 minutes/week; 95%CI: 313.4-323.4) decreased 50% in 2019. In physical education, the weekly average in moderate to vigorous intensity physical activity of girls is less than 50 minutes and boys is greater than 60 minutes in the four editions of PeNSE, also 22.7% of girls reported (PeNSE/2019) not having taken physical education classes whereas the same thing is reported by 19.7% of boys. Sedentary behavior reduced regarding time watching TV, but sitting time increased by 50.1% (95%CI: 48.9-51.3) and 54% (95%CI: 53.1-54.9) between PeNSE/2009 and PeNSE/2019. As a consequence of the drop in physical activity levels, public policies that promote physical activity are necessary, including increasing physical education classes at school to at least three times a week.

O objetivo do estudo foi analisar a tendência de atividade física dos escolares brasileiros e as associações com variáveis demográficas, socioeconômicas e comportamentais, por meio da Pesquisa Nacional de Saúde do Escolar (PeNSE) em suas quatro edições - 2009, 2012, 2015 e 2019. Foram usados dados dos escolares (13-17 anos) participantes das quatro edições da PeNSE (n = 392.922). Descrevemos o percentual de ativos, a média e valores percentuais da atividade física de intensidade moderada à vigorosa em minutos/semana. A regressão de Poisson foi ajustada para sexo, idade, cor da pele, escore de bens e comportamento sedentário (≥ 2 horas/dia para assistir TV e ≥ 3 horas/dia de tempo sentado). Como limitação, a amostra da PeNSE/2009 refere-se apenas às capitais brasileiras. O percentual de ativos reduziu de 43,1% em 2009 para 18,2% em 2019. A média em atividade física de intensidade moderada à vigorosa da PeNSE/2009 (média = 318,4 minutos/semana; IC95%: 313,4-323,4) reduziu 50% em 2019. Na educação física, a média semanal em atividade física de intensidade moderada à vigorosa das meninas foi menor que 50 minutos, ao passo que a dos meninos foi maior que 60 minutos, nas quatro edições da PeNSE. Ainda, 22,7% das meninas relataram (PeNSE/2019) não ter tido aulas de educação física, enquanto o mesmo é relatado por 19,7% dos meninos. O comportamento sedentário sofreu redução no hábito de assistir TV, porém o tempo sentado aumentou de 50,1% (IC95%: 48,9-51,3) para 54% (IC95%: 53,1-54,9) entre a PeNSE/2009 e a PeNSE/2019. Como consequência da queda nos níveis de atividade física, são necessárias políticas públicas que promovam a atividade física, como aumentar as aulas de educação física na escola para, no mínimo, três vezes por semana.

El objetivo de este estudio fue analizar la tendencia de la actividad física del alumnado brasileño y sus asociaciones con las variables demográficas, socioeconómicas y de comportamiento mediante la Encuesta Nacional de Salud del Escolar (PeNSE) en sus cuatro ediciones (de 2009, 2012, 2015 y 2019). Se utilizaron los datos del alumnado (13-17 años) que participó en las cuatro ediciones de la PeNSE (n = 392.922). Se describieron el porcentaje de valores activos, la media y los valores percentiles de actividad física de intensidad moderada a vigorosa en minutos/semana. La regresión de Poisson se ajustó según sexo, edad, color de la piel, puntuación de activos y comportamiento sedentario (≥ 2 horas/día para ver televisión y ≥ 3 horas/día sentado). Como limitación, la muestra de la PeNSE/2009 se refiere únicamente a las capitales brasileñas. El porcentaje de activos disminuyó del 43,1% en 2009 al 18,2% en 2019. La media de actividad física de intensidad moderada a vigorosa de la PeNSE/2009 (media = 318,4 minutos/semana; IC95%: 313,4-323,4) tuvo una reducción de un 50% en 2019. En educación física, el promedio semanal en actividad física de intensidad moderada a vigorosa de las niñas fue menos de 50 minutos, y el de los niños llegó a 60 minutos en las cuatro ediciones de la PeNSE, además, el 22,7% de las niñas y el 19,7% de los niños (PeNSE/2019) informaron no haber tomado clases de educación física. Hubo una disminución en el comportamiento sedentario de ver televisión, pero el tiempo sentado aumentó del 50,1% (IC95%: 48,9-51,3) al 54% (IC95%: 53,1-54,9) entre la PeNSE/2009 y la PeNSE/2019. El descenso de los niveles de actividad física lleva a la necesidad de desarrollar políticas públicas que promuevan la actividad física, incluido el incremento de las clases de educación física en las escuelas al menos tres veces por semana.

Physical Activity and Chronic Stress in Early Life: Findings From the 2015 Pelotas (Brazil) Birth Cohort.

BACKGROUND: The association of physical activity through early childhood on children's chronic stress still is unclear. Therefore, the aim of the present study is to test the association of physical activity through early childhood (1-4 y) with chronic stress, measured by hair cortisol at age 4. METHODS: Longitudinal study including children from the 2015 Pelotas (Brazil) Birth Cohort. Cortisol at age 4 was measured using a hair sample, which provided cortisol concentration from the past months. Physical activity was measured using accelerometers at 1, 2, and 4 years. Linear regression models were used to assess the association between physical activity and chronic stress. Trajectory models were also applied to examine chronic stress in relation to physical activity patterns throughout early childhood. RESULTS: Children with valid physical activity and hair cortisol data were included in the analyses (N = 1475). Three groups of physical activity trajectories between 1 and 4 years were identified: low, medium, and high. No association between physical activity at 1, 2, and 4 years and chronic stress at age 4 was observed. However, children in the "high" physical activity trajectory presented low cortisol concentration; the magnitude of the regression coefficient was slightly larger in girls (ß = -0.125; 95% confidence interval, -0.326 to 0.074) than boys (ß = -0.051; 95% confidence interval, -0.196 to 0.09). CONCLUSION: There was no clear association between physical activity and chronic stress in early childhood. Trajectories models suggest that higher activity throughout early childhood may positively impact chronic stress; however, more studies are needed to confirm that hypothesis.

Prática de atividade física e desigualdades em idosos antes e após a COVID-19 / Physical activity and inequalities in older adults before and after COVID-19

O objetivo do estudo foi verificar modificações na prevalência de atividade física (AF) e desigual-dades em idosos acompanhados antes e após o período de distanciamento social causado pela CO-VID-19. Trata-se de estudo prospectivo conduzido na zona urbana da cidade de Pelotas-Rio Grande do Sul, onde idosos foram acompanhados no ano de 2019/20 e 2021/22. A prevalência de AF foi avaliada através do IPAQ nos domínios do lazer e deslocamento avaliados de forma conjunta. Foram classificados como ativos fisicamente aqueles que realizavam ≥ 150 min/sem. As covariáveis/estra-tificadores avaliadas foram sexo, idade, cor da pele, classe econômica, escolaridade e morbidades. As desigualdades simples foram avaliadas através das diferenças e das razões da prevalência de AF e as desigualdades complexas através do índice de desigualdade (SII) e o índice de concentração (CIX). Os resultados indicaram que houve redução da prevalência de AF de 2019/20 para 2021/22 e que essas modificações ocorreram em todos os grupos populacionais, variando em termos de magnitude de declínio. O SII mostrou aumento da desigualdade entre os mais pobres em comparação aos mais ricos e redução da desigualdade em relação à idade, escolaridade e morbidades. Concluiu-se que a redução da AF ocorreu em todos os grupos populacionais. Em termos de desigualdades, houve aumento em termos de classe econômica e, nos casos de redução da desigualdade, tal mudança foi em virtude da diminuição de AF entre as categorias que eram mais ativas, sendo necessário políticas de saúde para resgatar níveis adequados de AF na população estudada

This study aimed to verify the modification in the physical activity prevalence (PA) and possible inequalities in older individuals monitored before and after social distancing due to COVID-19. This is a prospective study conducted in the urban area of Pelotas-Rio Grande do Sul, where the elderly was followed up in 2019/20 and 2021/22. The prevalence of PA was assessed using the IPAQ in the domain of leisure time and commuting evaluated together. Older people who performed ≥150 min/week were classified as physically active. The covariates/stratifiers assessed were sex, age, skin color, economic class, schooling, and morbidity. Simple inequalities were assessed through differences and ratios for the prevalence of PA and complex ine-qualities through the inequality index (SII) and the concentration index (CIX). The results indicated that there was a reduction in the prevalence of PA among the participants from 2019/20 to 2021/22 and that these changes occurred regardless of population characteristics. The SII showed an increase in PA inequality among the poorest compared to the richest individuals and a reduction in inequalities about age, education, and morbidities. It is concluded that the reduction in PA occurred similarly regardless of the covariates/stratifiers evaluated, that there was an increase in inequality in PA among the less economically favored, and that the reduction in inequality occurred especially from the reduction in PA, requiring health policies to rescue adequate levels of PA in the studied population

Effect of Adolescent Body Mass Index Trajectories on Working Memory: A Prospective Birth Cohort in Brazil.

Most research on the association between high body mass index (BMI) and working memory (WM) has been cross-sectional in design, limiting conclusions about long-term effects of overweight and obesity on WM. The aim of this study was to examine the association of BMI trajectory from 11 to 22 years with WM at 22 years of age. Data from the 1993 Pelotas (Brazil) Birth Cohort Study were analyzed (N = 3,010). Information on BMI was collected at ages 11, 15, 18, and 22 years. Group-based trajectory modeling was used separately for each sex to identify BMI trajectories. Working Memory performance (Digit Span backward score) was examined at age 22. Multiple linear regression was used to assess the association between BMI trajectory from 11 to 22 years and WM at age 22. In both sexes, the trajectory groups were: stable normal weight, stable overweight, and stable obesity. In the adjusted analyses, women in the stable-obesity group had lower WM at 22 years (ß = -.49; 95% CI: -0.75, -0.23; p < .001) than those in the stable-normal weight group. No associations were found between BMI trajectories and WM in men. This study may contribute to future investigations of possible explanatory avenues for the association between high BMI and WM.

Tendência temporal de atividade física em adolescentes brasileiros: análise da Pesquisa Nacional de Saúde do Escolar de 2009 a 2019 / Temporal trend of physical activity in Brazilian adolescents: analysis of the Brazilian National Survey of School Health from 2009 to 2019 / Tendencia temporal de la actividad física en adolescentes brasileños: análisis de la Encuesta Nacional de Salud del Escolar de 2009 a 2019

Resumo: O objetivo do estudo foi analisar a tendência de atividade física dos escolares brasileiros e as associações com variáveis demográficas, socioeconômicas e comportamentais, por meio da Pesquisa Nacional de Saúde do Escolar (PeNSE) em suas quatro edições - 2009, 2012, 2015 e 2019. Foram usados dados dos escolares (13-17 anos) participantes das quatro edições da PeNSE (n = 392.922). Descrevemos o percentual de ativos, a média e valores percentuais da atividade física de intensidade moderada à vigorosa em minutos/semana. A regressão de Poisson foi ajustada para sexo, idade, cor da pele, escore de bens e comportamento sedentário (≥ 2 horas/dia para assistir TV e ≥ 3 horas/dia de tempo sentado). Como limitação, a amostra da PeNSE/2009 refere-se apenas às capitais brasileiras. O percentual de ativos reduziu de 43,1% em 2009 para 18,2% em 2019. A média em atividade física de intensidade moderada à vigorosa da PeNSE/2009 (média = 318,4 minutos/semana; IC95%: 313,4-323,4) reduziu 50% em 2019. Na educação física, a média semanal em atividade física de intensidade moderada à vigorosa das meninas foi menor que 50 minutos, ao passo que a dos meninos foi maior que 60 minutos, nas quatro edições da PeNSE. Ainda, 22,7% das meninas relataram (PeNSE/2019) não ter tido aulas de educação física, enquanto o mesmo é relatado por 19,7% dos meninos. O comportamento sedentário sofreu redução no hábito de assistir TV, porém o tempo sentado aumentou de 50,1% (IC95%: 48,9-51,3) para 54% (IC95%: 53,1-54,9) entre a PeNSE/2009 e a PeNSE/2019. Como consequência da queda nos níveis de atividade física, são necessárias políticas públicas que promovam a atividade física, como aumentar as aulas de educação física na escola para, no mínimo, três vezes por semana.

Abstract: This study aimed to analyze the physical activity trend of Brazilian schoolchildren and the associations with demographic, socioeconomic, and behavioral variables by using the Brazilian National Survey of School Health (PeNSE) in its four editions - 2009, 2012, 2015, and 2019. Data from students (13-17 years old) participating in the four editions of the PeNSE (n = 392,922) were used. We describe the percentage of active, mean, and percentile values of moderate to vigorous intensity physical activity in minutes/week. Poisson's regression was adjusted for gender, age, skin color, goods score, and sedentary behavior (≥ 2 hours/day watching TV and ≥ 3 hours/day sitting time). As a limitation, the PeNSE/2009 sample refers only to the Brazilian capital cities. The percentage of active students decreased from 43.1% in 2009 to 18.2% in 2019. The mean moderate to vigorous intensity physical activity of PeNSE/2009 (mean = 318.4 minutes/week; 95%CI: 313.4-323.4) decreased 50% in 2019. In physical education, the weekly average in moderate to vigorous intensity physical activity of girls is less than 50 minutes and boys is greater than 60 minutes in the four editions of PeNSE, also 22.7% of girls reported (PeNSE/2019) not having taken physical education classes whereas the same thing is reported by 19.7% of boys. Sedentary behavior reduced regarding time watching TV, but sitting time increased by 50.1% (95%CI: 48.9-51.3) and 54% (95%CI: 53.1-54.9) between PeNSE/2009 and PeNSE/2019. As a consequence of the drop in physical activity levels, public policies that promote physical activity are necessary, including increasing physical education classes at school to at least three times a week.

Resumen: El objetivo de este estudio fue analizar la tendencia de la actividad física del alumnado brasileño y sus asociaciones con las variables demográficas, socioeconómicas y de comportamiento mediante la Encuesta Nacional de Salud del Escolar (PeNSE) en sus cuatro ediciones (de 2009, 2012, 2015 y 2019). Se utilizaron los datos del alumnado (13-17 años) que participó en las cuatro ediciones de la PeNSE (n = 392.922). Se describieron el porcentaje de valores activos, la media y los valores percentiles de actividad física de intensidad moderada a vigorosa en minutos/semana. La regresión de Poisson se ajustó según sexo, edad, color de la piel, puntuación de activos y comportamiento sedentario (≥ 2 horas/día para ver televisión y ≥ 3 horas/día sentado). Como limitación, la muestra de la PeNSE/2009 se refiere únicamente a las capitales brasileñas. El porcentaje de activos disminuyó del 43,1% en 2009 al 18,2% en 2019. La media de actividad física de intensidad moderada a vigorosa de la PeNSE/2009 (media = 318,4 minutos/semana; IC95%: 313,4-323,4) tuvo una reducción de un 50% en 2019. En educación física, el promedio semanal en actividad física de intensidad moderada a vigorosa de las niñas fue menos de 50 minutos, y el de los niños llegó a 60 minutos en las cuatro ediciones de la PeNSE, además, el 22,7% de las niñas y el 19,7% de los niños (PeNSE/2019) informaron no haber tomado clases de educación física. Hubo una disminución en el comportamiento sedentario de ver televisión, pero el tiempo sentado aumentó del 50,1% (IC95%: 48,9-51,3) al 54% (IC95%: 53,1-54,9) entre la PeNSE/2009 y la PeNSE/2019. El descenso de los niveles de actividad física lleva a la necesidad de desarrollar políticas públicas que promuevan la actividad física, incluido el incremento de las clases de educación física en las escuelas al menos tres veces por semana.

Effects of Regular Exercise During Pregnancy on Early Childhood Neurodevelopment: The Physical Activity for Mothers Enrolled in Longitudinal Analysis Randomized Controlled Trial.

BACKGROUND: The aim of this study was to investigate the effect of exercise during pregnancy on early childhood neurodevelopment (cognitive, motor, and language domains). METHODS: A randomized controlled trial nested into the 2015 Pelotas (Brazil) Birth Cohort was conducted. Healthy pregnant women were enrolled between 16 and 20 weeks of gestation; 424 women and their children (intervention [n = 141]; control [n = 283]) were analyzed. An exercise-based intervention 3 times per week was delivered over 16 weeks. Child neurodevelopment and its domains were assessed at 1, 2, and 4 years. Standardized mean differences and 95% confidence intervals are presented. RESULTS: No effects of exercise during pregnancy on child neurodevelopment and its domains at age 1 year were observed. Compared with the control group, children from women in the exercise group had higher language score at age 2 years (standardized mean differences = 0.23; 95% confidence intervals, 0.02 to 0.44) and higher cognitive score (standardized mean differences = 0.22; 95% confidence intervals, 0.03 to 0.41) at age 4 years. No effects of exercise during pregnancy were observed in the motor domain at 1, 2, and 4 years. CONCLUSIONS: No detrimental effects of exercise during pregnancy on child neurodevelopment were observed. In addition, these findings suggest that exercise during pregnancy can result in small benefits for language and cognitive development.

Longitudinal Associations Between Device-Measured Physical Activity and Early Childhood Neurodevelopment.

BACKGROUND: The aim of this study was to investigate longitudinal associations between physical activity and early childhood neurodevelopment. METHODS: Data from 1673 children from the 2015 Pelotas (Brazil) birth cohort study were analyzed. Physical activity was measured using accelerometers on the wrist at ages 1, 2, and 4 years. Neurodevelopment was measured using the Battelle Development Inventory at age 4 years. Linear regression models were used to test trajectories and cumulative associations of physical activity with child neurodevelopment. RESULTS: Of the 3 physical activity trajectories observed, children in the medium (ß = 1.17; 95% confidence interval, 0.25 to 2.10) and high (ß = 2.22; 95% confidence interval, 0.61 to 3.82) trajectories showed higher neurodevelopment scores than children in the lower activity trajectory. Cumulative analyses showed that children in the highest tertile of physical activity in all follow-ups presented a mean neurodevelopment score 4.57 (95% confidence interval, 2.63 to 6.51) higher than children in the lowest tertile in all follow-ups. All analyses showed a dose-response characteristic of association, with higher physical activity indicating higher neurodevelopment scores. CONCLUSIONS: Physical activity may be an important predictor of neurodevelopment through early childhood.

Influence of center-based child care on development of two-year-olds in a Brazilian cohort.

OBJECTIVE: To investigate the association between child care attendance since birth and development in two-years-old Brazilian children. METHODS: The study used longitudinal data from the 2015 Pelotas Birth Cohort. The childhood development (cognitive, fine and gross motor skills, and language) at two-years-old children was assessed using INTER-NDA (INTERGROWTH-21st Neurodevelopment Assessment). The child care attendance was measured at ages one and two years and categorized as: a) never attended child care; b) attended some child care (one or two years); and c) always attended child care (one and two years). Demographic, socioeconomic, health, and child stimulation variables were considered as confounders. Crude and adjusted analyses of child care attendance and development were carried out using linear regression. RESULTS: Out of the 3,870 infants included in the analyses, around 1/3 attended center-based child care. In crude analyses, attending center-based child care was associated with positive developmental outcomes, except in motor domains. In adjusted analyses, compared to those children that have never attended child care, children who did attend presented higher scores for cognitive development (always in child care: ß: 2.44, 95%CI: 0.83-4.05; some child care: ß: 1.35, 95%CI: 0.17-2.53). CONCLUSIONS: This study suggests that center-based child care may help improve child cognitive development in the Brazilian context. Furthermore, the association was higher for early and continued attendance. Considering the low prevalence of children in external care, it is recommended to improve child care opportunities in early childhood.

Photobiomodulation therapy reduces postoperative pain after third molar extractions: A randomized clinical trial / La terapia de fotobiomodulación reduce el dolor posoperatorio después de extracciones de terceros molares: un ensayo clínico aleatorizado

Background: To assess the efficacy of PBMT on reducing postoperative pain scores in patients submitted to thirdmolar extractions.Material and Methods: A randomized controlled trial (ReBEC:RBR-94BCKZ) was designed according to theSPIRIT and followed the CONSORT. Patients were randomly allocated according to control or PBMT groups.PBMT consisted of the application of GaAlAs laser (808nm;50mW) applied in six points (1.23 min;11 J/cm2) afterextraction. Pain scores were assessed using the Visual Analogue Scale (VAS) in millimeters evaluated after 6(T6), 24 (T24), and 48 (T48) hours. The Wilcoxon Mann–Whitney test was used to check for possible associationsbetween VAS scores and treatment groups.Results: A total of 101 third molar extractions were performed in 44 patients. The mean age was 28 yearsold(SD±11.54). Comparing control and intervention, PBMT group showed a significant effect on the reductionof postoperative pain at T6(mean VAS=0.9; C.I:0.63–1.16) compared to control (mean VAS=2.5;C.I:2.1–2.88)(p<0.001). The same statistically significant effect on the reduction of postoperative pain was observed at T24(PBMT mean VAS=0.72;C.I:0.51–0.93; control mean VAS=2.86;C.I:2.40–3.31;p<0.001) and T48 (PBMT meanVAS=0.64;C.I:0.36–0.92; control mean VAS=2.86;C.I:2.37–3.34;p<0.001).Conclusions: PBMT significantly reduce the postoperative pain scores when assessed 6, 24, and 48 hours afterthird molar extractions.(AU)

Sedentary behavior in elderly residents from the rural area in Southern Brazil. / Comportamento sedentário em idosos residentes de zona rural no extremo Sul do Brasil.

INTRODUCTION: Sedentary behavior has been associated with several health indicators. This study aims to describe this outcome in elderly people living in rural areas. METHODOLOGY: A cross-sectional study was carried out with elderly people from the rural area in the city of Rio Grande/RS, in 2017. Data were collected using an electronic questionnaire. Sedentary behavior was evaluated by eight aspects: watching television/videos/DVDs, using computer/internet, reading, socializing with friends and/or family, driving or riding a car/bike/taking public transport, practicing a hobby, working, and other activities. The analysis was composed by the description of aspects and multivariable (linear regression) analysis to test associations between the outcome and socioeconomic, demographic and physical activity characteristics. Association of the excess of sedentary behavior and time watching television within the independent variables was also verified. RESULTS: The mean of sedentary behavior was 274.9 minutes/day (n = 1,030), but watching television represented almost half (130.5 minutes/ day). Age was inversely associated with sedentary behavior, while income and schooling presented a direct relation. Income had a positive association with excessive sedentary behavior and time watching television. CONCLUSION: The mean sedentary behavior was lower when compared with the literature for the elderly. We suggest that actions to encourage healthy habits aim especially at reducing the time spent watching television.

INTRODUÇÃO: O comportamento sedentário tem sido associado a diversos indicadores de saúde. O objetivo deste estudo é descrever esse desfecho em idosos residentes de zona rural. METODOLOGIA: Realizou-se um estudo transversal com idosos da zona rural de Rio Grande/RS, em 2017. A coleta de dados foi realizada por meio de questionário eletrônico. O comportamento sedentário foi avaliado pelo somatório de oito aspectos: assistir a televisão/vídeos/DVD, usar computador/internet, ler, socializar com amigos e/ou família, dirigir ou andar de carro/moto/transporte público, praticar algum hobby, trabalhar e outras atividades. A análise deu-se pela descrição dos aspectos e pela análise multivariável (regressão linear), para testar associações com características socioeconômicas, demográficas e atividade física. Também foi verificada associação do excesso de comportamento sedentário e tempo assistindo à televisão com as variáveis independentes. RESULTADOS: A média de comportamento sedentário foi de 274,9 minutos/dia (n = 1.030), e assistir televisão representou quase a metade (130,5 minutos/dia). Idade mostrou-se inversamente associada com o comportamento sedentário, enquanto renda e escolaridade apresentaram uma relação direta. Renda apresentou associação positiva com excesso de comportamento sedentário e tempo assistindo televisão. CONCLUSÃO: A média de comportamento sedentário foi menor quando comparada com a literatura em idosos. Sugere-se que ações para incentivar hábitos saudáveis visem especialmente diminuir o tempo assistindo televisão.

Comportamento sedentário em idosos residentes de zona rural no extremo Sul do Brasil / Sedentary behavior in elderly residents from the rural area in Southern Brazil

RESUMO: Introdução: O comportamento sedentário tem sido associado a diversos indicadores de saúde. O objetivo deste estudo é descrever esse desfecho em idosos residentes de zona rural. Metodologia: Realizou-se um estudo transversal com idosos da zona rural de Rio Grande/RS, em 2017. A coleta de dados foi realizada por meio de questionário eletrônico. O comportamento sedentário foi avaliado pelo somatório de oito aspectos: assistir a televisão/vídeos/DVD, usar computador/internet, ler, socializar com amigos e/ou família, dirigir ou andar de carro/moto/transporte público, praticar algum hobby, trabalhar e outras atividades. A análise deu-se pela descrição dos aspectos e pela análise multivariável (regressão linear), para testar associações com características socioeconômicas, demográficas e atividade física. Também foi verificada associação do excesso de comportamento sedentário e tempo assistindo à televisão com as variáveis independentes. Resultados: A média de comportamento sedentário foi de 274,9 minutos/dia (n = 1.030), e assistir televisão representou quase a metade (130,5 minutos/dia). Idade mostrou-se inversamente associada com o comportamento sedentário, enquanto renda e escolaridade apresentaram uma relação direta. Renda apresentou associação positiva com excesso de comportamento sedentário e tempo assistindo televisão. Conclusão: A média de comportamento sedentário foi menor quando comparada com a literatura em idosos. Sugere-se que ações para incentivar hábitos saudáveis visem especialmente diminuir o tempo assistindo televisão.

ABSTRACT: Introduction: Sedentary behavior has been associated with several health indicators. This study aims to describe this outcome in elderly people living in rural areas. Methodology: A cross-sectional study was carried out with elderly people from the rural area in the city of Rio Grande/RS, in 2017. Data were collected using an electronic questionnaire. Sedentary behavior was evaluated by eight aspects: watching television/videos/DVDs, using computer/internet, reading, socializing with friends and/or family, driving or riding a car/bike/taking public transport, practicing a hobby, working, and other activities. The analysis was composed by the description of aspects and multivariable (linear regression) analysis to test associations between the outcome and socioeconomic, demographic and physical activity characteristics. Association of the excess of sedentary behavior and time watching television within the independent variables was also verified. Results: The mean of sedentary behavior was 274.9 minutes/day (n = 1,030), but watching television represented almost half (130.5 minutes/ day). Age was inversely associated with sedentary behavior, while income and schooling presented a direct relation. Income had a positive association with excessive sedentary behavior and time watching television. Conclusion: The mean sedentary behavior was lower when compared with the literature for the elderly. We suggest that actions to encourage healthy habits aim especially at reducing the time spent watching television.

Atividade física no deslocamento em estudantes de Educação Física ­ um estudo longitudinal / Physical activity during commuting by Physical Education students: a longitudinal study / Actividad física en el desplazamiento en estudiantes de Educación Física ­un estudio longitudinal

Devido à importância da atividade física (AF) no deslocamento para promoção de saúde coletiva se evidencia a necessidade de entendimento desse comportamento na população universitária. O objetivo foi verificar a prática de AF no deslocamento em estudantes de Educação Física, por meio de estudo longitudinal realizado com acadêmicos de uma Universidade Federal do Sul do Brasil. Foram avaliados 115 estudantes através de questionário aplicado em 2014 e 2015. O nível de AF foi analisado através do domínio de deslocamento do Questioná-rio Internacional de Atividade Física. A análise estatística utilizou teste de qui-quadrado e McNemar. Verificou-se queda da AF em licenciados e bacharéis. Iniciativas governamentais e dos cursos onde esses estudantes estão inseridos são necessárias e urgentes.

Due to the importance of physical activity (PA) in displacement for collective health promo-tion, there is a need for understanding this behavior in the university population. The aim was to verify the practice of PA in displacement in Physical Education students. A longitudinal study conducted with academics from a Federal University of Southern of Brazil. A total of 115 students were evaluated through a questionnaire applied in 2014 and 2015. The level of PA was evaluated through the displacement domain of the International Questionnaire of Physical Activity. Statistical analysis used chi-square test and McNemar test. There was a decrease of the PA in graduates and bachelors. Government initiatives and the courses where these students are inserted are necessary and urgent.

Debido a la importancia de la actividad física (AF) en el desplazamiento para la promoción de salud colectiva, es necesario comprender este comportamiento en la población universitaria. El objetivo fue verificar la práctica de AF en el desplazamiento en estudiantes deEducación Física. Estudio longitudinal realizado con académicos de una Universidad Federal del Sur de Brasil. Se evaluaron 115 estudiantes a través de un cuestionario aplicado en 2014 y 2015. El nivel de AF fue evaluado a través del dominio de desplazamiento del Cuestionario Interna-cional de Actividad Física. El análisis estadístico utilizó la prueba de chi-cuadrado y McNe-mar. Se verificó la caída de la AF en licenciados y bachilleres. Las iniciativas gubernamenta-les y los cursos donde se insertan estos estudiantes son necesarios y urgentes.

Correlação entre atividade física e comportamento sedentário em estudantes / Relación entre actividad física y conducta sedentaria de estudiantes / Correlation between physical activity and sedentary behavior in students

OBJECTIVE: To evaluate the correlation between physical activity (PA) and sedentary behavior (SB) of Physical Education (PE) undergraduates over a year in the program. METHODS: A quantitative and longitudinal study, involving all students of associates's degree (day and evening) and bachelor's degree programs of the Federal University of Pelotas (UFPel) in 2014 (n=115) and their follow-up in 2015. The first data collection occurred at the beginning of the first semester and the follow-up, after one year in the program. PA and SB were assessed by means of the long version of the International Physical Activity Questionnaire, and data analysis was performed using Pearson's correlation test. RESULTS: The PA of the students presented a high median in the first and second analysis, and their SB showed a high mean in the baseline and in the follow-up. No correlation was evidenced between PA and SB at the baseline (r=-0.02). However, after one year, a weak but positive correlation was identified (r=0.12). CONCLUSION: The correlation between sedentary behavior and physical activity evaluated in both periods was weak, but a timid increase over a year was perceived. (AU)

OBJETIVO: Avaliar a correlação entre atividade física (AF) e comportamento sedentário (CS) de estudantes de Educação Física (EF) ao longo de um ano no curso de graduação. MÉTODOS: Estudo quantitativo e longitudinal, envolvendo todos os acadêmicos dos cursos de licenciatura (diurno e noturno) e bacharelado da Universidade Federal de Pelotas (UFPel) em 2014 (n=115) e o seu acompanhamento em 2015. A primeira coleta de dados ocorreu no início do primeiro semestre e o acompanhamento, após um ano no curso. A AF e o CS foram mensurados através da versão longa do International Physical Activity Questionnaire e realizou-se a análise de dados por meio do teste de correlação de Pearson. RESULTADOS: A AF dos estudantes apresentou uma alta mediana na primeira e na segunda análise, e seu CS apresentou uma alta média na linha de base e no acompanhamento. Os dados não demonstram correlação entre AF e CS na linha de base (r=- 0,002). No entanto, após um ano, identificou-se uma correlação fraca, mas positiva (r=0,12). CONCLUSÃO: A correlação entre o comportamento sedentário e a atividade física em ambos os períodos é baixa, apesar de se observar um aumento tímido após o primeiro ano de graduação. (AU)

OBJETIVO: Evaluar la relación entre la Actividad Física (AF) y la conducta sedentaria (CS) de estudiantes de grado de Educación Física (EF) a lo largo de un año. MÉTODOS: Estudio cuantitativo y longitudinal con todos los académicos de grado (día y noche) y grado de licenciatura de la Universidad Federal de Pelotas (UFPel) en 2014 (n=115) y su seguimiento en 2015. El seguimiento se dio después de un año de curso y la primera recogida de datos. La AF y la CS fueron medidas a través de la versión larga del Cuestionario Internacional de Actividad Física y el análisis de los datos ha sido realizado con el test de correlación de Pearson. RESULTADOS: La AF presentó elevada mediana en el primer y segundo análisis y también en la línea de base y en el seguimiento los estudiantes mostraron elevada media de CS. Los datos no señalan relación entre la AF y CS en la línea de base (r=-0.02). Sin embargo, después de un año ha sido identificada una relación débil pero positiva (r=0.12). CONCLUSIÓN: La relación entre la conducta sedentaria y la actividad física evaluadas en ambos periodos ha sido débil pero un pequeño aumento ha sido percibido a lo largo de un año. (AU)

Atividade física em acadêmicos de Educação Física: um estudo longitudinal / Physical activity in physical education students: a longitudinal study

O objetivo do estudo foi verificar a prática de atividades físicas e os fatores a ela associados em estudantes de Educação Física. Estudo longitudinal realizado com acadêmicos de uma Universidade Federal do sul do Brasil. Foram avaliados 81 estudantes dos cursos de licenciatura e bacharelado os quais responderam um questionário padronizado aplicado em dois períodos: início da graduação (2014) e início do segundo ano de curso (2015). O instrumento abordou questões sobre dados sociodemográficos, comportamentais e nutricional. O nível de atividade física foi avaliado nos domínios lazer e deslocamento através do International Physical Activity Questionnaire (IPAQ) versão longa. A análise estatística utilizou teste de qui-quadrado para comparação de proporções e teste de McNemar para dados pareados. A amostra apresentou maior frequência de ativos entre os indivíduos do sexo masculino, solteiros e não fumantes. Não houve diferença significativa de ativos entre cursos e entre os períodos avaliados. O período de um ano após o ingresso na universidade não mostrou diferenças na prática de atividade física, no entanto as baixas prevalências no domínio do lazer alertam para uma continuidade no acompanhamento, visto que esses indivíduos, além de se beneficiarem deste comporta-mento saudável, serão futuros disseminadores do mesmo.

The aim of the study was to verify the physical activity pratice and associated factors in physical education students. A longitudinal study was conducted with academics from a federal university in southern Brazil. We evaluated 81 students of bachelor's degree and licentiate's degree who answered a standardized questionnaire applied in two periods: early graduation (2014) and beginning of the second year course (2015). The questionnaire included sociodemographic, behavioral and nutritional questions. The level of physical activity was assessed in leisure and commuting domains through the International Physical Activity Questionnaire (IPAQ) long version. The statistical analysis used chis-quare test to compare proportions and McNemar test for paired data. The sample showed a higher frequency of actives among males, singles and nonsmokers. There was no significant difference in actives between courses and between periods. The period of one year after entry into the university showed no differences in physical activity, however the low prevalence in the leisure domain warn of continuity in monitoring, since these individuals, as well as to benefit from this healthy behavior, will be forthcoming disseminators of it.