Background The combined association of physical activity and sedentary behavior with adverse health factors is not yet clear in the literature. A combined analysis of physical activity level and sedentary behavior may provide evidence of the interrelation between these behavioral variables and the frailty syndrome. Thus, the aim of this study was to examine the relationship between physical activity level, sedentary behavior and frailty in older adults. Methods In this study, we evaluated 457 older adults (age range = 60 to 96 years old) from the Longitudinal Study of the Elderly Health of Alcobaça, Bahia. The frailty condition was defined by the presence of three or more of the following criteria: unintentional weight loss, slow walking speed measured over a 4.57 m test, a reduction of manual grip strength and exhaustion. Based upon these criteria, participants were classified as non-frail or frail. Physical activity level and time spent in sedentary behavior were assessed with the International Questionnaire of Physical Activity. Descriptive statistics were used to characterize the sample. To examine the combined association of physical activity and sedentary behavior with frailty, chi-square and Poisson regression tests were used. Statistical significance was defined as p ≤ 0.05. Results The prevalence of frailty was 8.8% ( n = 40), with higher prevalence observed with increasing age. Low physical activity level combined with excessive time spent in sedentary behavior (physical activity level < 150 min/wk. and sedentary behavior ≥540 min/day) was associated with frailty, resulting in a prevalence ratio of 2.83 (95% CI, 1.23 to 6.52). Conclusion Frailty is more prevalent among older adults who exhibit insufficient levels of physical activity combined with a great amount of time spent in sedentary behavior, even when adjusted for sociodemographic factors.

Estado nutricional e percepção da imagem corporal de mulheres idosas residentes no nordeste do BrasilNutritional status and perceived body image of elderly women in the Northeast of Brazil

The aim of this study was to analyze the association of combined physical activity (PA)/sedentary behaviour (SB) with depressive symptoms (DS) in older adults. A cross-sectional study was conducted with 622 individuals ≥ 60 years old. After adjusting for gender, years of study, and monthly household income, prevalence ratios for presence of DS were statistically significant for older adults with <150 min/week in PA and ≥75th percentile of SB on weekdays (PR = 2.11,95%CI: 1.54-2.90) and on weekends (PR = 2.20,95%CI:1.57-3.09). Older adults who do not meet the PA guidelines and spend more time in SB on weekdays or weekend days are more likely to present with DS compared to those who meet the recommendations of PA and spend less time in SB during the day.

ResumoO objetivo do estudo foi descrever a prevalência e os fatores associados ao comportamento sedentário (CS) entre estudantes de uma universidade do estado da Bahia. A amostra de 1.243 indivíduos foi representativa dos estudantes de uma universidade do estado da Bahia (2012). A distribuição da amostra considerou a proporcionalidade dos cursos, período de estudo e anos de ingresso na universidade. As variáveis dependentes foram o uso de computador para estudos e lazer; assistir televisão; uso de videogame e o tempo de tela. Considerou-se como critério de risco para cada uma dessas variáveis tempo ≥2 horas. As variáveis independentes foram os indicadores sociodemográficos; de vínculo com a universidade; atividade física no lazer; índice de massa corporal e autopercepção de sono. A medida de associação adotada foi a Odds Ratio, utilizandose da Regressão Logística binária. A prevalência geral de uso de computador foi de 56,1%, para assistir televisão foi 30,3%, para o uso de videogame foi de 3,8% e para o tempo de tela foi de 83,7%. Apresentaram menores chances de exposição aos CS: as mulheres, estudantes de menor faixa etária, com parceiro, do período noturno e os não praticantes de atividade física no lazer; e mais expostos os de maior tempo de ingresso na universidade. A prevalência de exposição ao CS foi elevada e mais discriminante com o passar dos anos de exposição à universidade. AbstractThe objective of study was to describe the prevalence and associated factors to sedentary behavior (SB) among students of a state university of Bahia. The sample of 1243 individuals was representative to students of a state university of Bahia (2012). The sample distribution considered the proportionality courses, period of study and year of entrance at the university. Dependent variables were using computer to studies and leisure; watch television; video game use and screen time. It was considered as risk criterion for each of these variables time ≥2 hours. The independent variables were sociodemographic indicators; link with university; leisure physical activity; body mass index and sleep self-perception. The measure of association was the Odds Ratio, using binary Logistic Regression. The prevalence of computer usage was 56.1%, to watch television was 30.3%, video game use was 3.8% and screen time was 83.7%. Presented smaller chances of exposure to SB: women, smaller age, with partner, night period and the not physical activity practitioners in leisure; and more exposed the most time of university. The prevalence of exposure to SB was elevated and more discriminant with the advance of exposition the life in university. Keywords Sedentary Lifestyle; Student; Cross-sectional Survey comportamento sedentário em estudantes UniversitáriosSedentary behavior among university students

The aim of this study was to examine the association of physical activity with depression and cognition deficit, separately and combined, in Brazilian older adults. We analyzed data from 622 older adults. Physical activity was assessed using the International Physical Activity Questionnaire. Depressive symptoms were assessed using the Geriatric Depression Scale, while cognitive deficit was assessed using the Mini-Mental State Examination. Multinomial logistic regressions were used to assess associations of depression and cognitive deficit with sociodemographic, health, and behavioral variables. Prevalence of physical inactivity (< 150 min of moderate-to-vigorous physical activity/ week), depression, and cognitive deficit were 35.7%, 37.4%, and 16.7%. Physical inactivity was associated with depression (OR: 1.83, 95% CI: 1.14-2.94) and with depression and cognitive deficit combined (OR: 4.23, 95% CI: 2.01-8.91). Physically inactive participants were also more likely to present limitations in orientation and language functions. Physical inactivity was associated with depression and also with depression and cognitive deficit combined in older adults.