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Made available in DSpace on 2021-06-25T10:26:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Physical activity has been associated with enhanced mental health among adults. However, it is not clear in the literature which domains (occupational, transport and leisure-time exercise) and intensities (moderate, vigorous and moderate-to-vigorous) of activity provide the greatest benefits. The aim of the present study was to describe the association of different domains and intensities of physical activity with depressive symptoms in adults. This was a cross-sectional observational study conducted among 209 adults (≥18 years) in Brazil. Depressive symptoms were assessed using the HADS questionnaire (Hospital Anxiety and Depression Scale). Physical activity intensities (moderate, vigorous and moderate-to-vigorous) were device-measured by accelerometry. Physical activity in different domains (occupational, transport, and leisure-time exercise) was self-reported using a questionnaire. Chronological age, ethnicity, body mass index, highest academic achievement, employment status, alcohol consumption, tobacco smoking, chronic morbidity and soft-drink ingestion were adopted as adjustment confounding factors. Linear regression analysis revealed that total self-reported physical activity [β = –0.100 (95%CI: –0.180 to –0.019)] and leisure-time exercise [β = –0.311 (95%CI: –0.468 to –0.155)] were negatively associated with depressive symptoms, but only leisure-time exercise remained significant after adjustment for confounding factors [β = –0.243 (95%CI: –0.409 to –0.076)]. Thus, leisure-time exercise was cross-sectionally associated with lower depressive symptoms in community-dwelling adults. Highlights Leisure-time physical activity was the only physical activity domain associated with lower depressive symptoms. This association appears to be independent of potential confounders. Potential interventions should focus on leisure-time domain. São Paulo State University (Unesp) School of Technology and Sciences Research Center on Physical Activity Health and Leisure (CIAFEL) Faculty of Sport University of Porto Universidade de São Paulo (USP) Center for Epidemiological Research in Nutrition and Health Department of Nutrition School of Public Health Universidade de São Paulo (USP) São Paulo State University (Unesp) School of Technology and Sciences

Made available in DSpace on 2019-10-06T15:31:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Background: Youth is a crucial period for bone gain, and physical activity (PA) has shown to increase bone mineral density (BMD) in this period. However, whether PA affects regional BMD is unclear. Thus, the aim of this study was to analyze the relationship between PA levels and regional BMD in youths. Methods: The sample included 110 children and adolescents aged 6–14 years. Body mass, height, sitting trunk length, and leg length were obtained for body mass index and maturity offset calculation. The arms, pelvis, spine, trunk, and legs BMD were measured by double energy X-ray absorptiometry. The PA was evaluated by questionnaire, and youths were classified as low, moderately, or highly physically active. Results: The sample included 63.7% boys and 36.3% girls with mean age of sample 9.5 (±1.6) yrs. Age, body mass index, and maturity offset were similar between sexes (p > 0.05). Boys with low PA levels had lower BMD Z-score for arms (−0.20 ± 0.71 vs. 0.30 ± 1.19, p = 0.006) and legs (−0.14 ± 1.00 vs. 0.35 ± 1.06, p = 0.026) compared to highly physically active youths. Multiple linear regression showed a positive linear relationship between legs BMD and PA in boys (β = 0.72 [95% CI = 0.09; 1.36]). Conclusion: In boys, low PA levels are associated with lower BMD in arms and legs. Post Graduation Program in Movement Sciences Sao Paulo State University–UNESP Departament of Physical Education Universidade Nove de Julho–UNINOVE GEAFS Research Group–Department of Physical Education Sao Paulo State University - UNESP Post Graduation Program in Physiotherapy Sao Paulo State University–UNESP Post Graduation Program in Movement Sciences Sao Paulo State University–UNESP GEAFS Research Group–Department of Physical Education Sao Paulo State University - UNESP Post Graduation Program in Physiotherapy Sao Paulo State University–UNESP