André O Werneck1, Paul J Collings2, Luciana L Barboza3, Brendon Stubbs4, Danilo R Silva5. 1. Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, Brazil. Electronic address: andreowerneck@gmail.com. 2. Bradford Institute for Health Research, Bradford Teaching Hospitals Foundation Trust, Bradford, UK; Department of Health Sciences, University of York, UK. 3. Department of Physical Education, Federal University of Sergipe - UFS, São Cristóvão, Sergipe, Brazil. 4. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, Box SE5 8AF, UK; South London and Maudsley NHS Foundation Trust, London, UK. 5. Department of Health Sciences, University of York, UK; Department of Physical Education, Federal University of Sergipe - UFS, São Cristóvão, Sergipe, Brazil.
Abstract
OBJECTIVE: To examine the relationship between physical activity, sedentary behaviors, and social isolation in a representative sample of Brazilian adolescents. METHOD: Cross sectional analyses using data from the Brazilian Scholar Health Survey conducted in 2015. The sample included 100,839 adolescents (mean age: 14.3 y, 51.4% Female) from 3040 schools. Information about social isolation (number of close friends and perceived loneliness), physical activity (International Physical Activity Questionnaire) and sedentary behaviors (total sitting time and TV viewing) were self-reported. Chronological age, race and type of city (state capital or other) were co-variables. Logistic regression models were used to analyze the data (results are presented as odds ratios (OR) with 95% confidence intervals). RESULTS: Physical activity was associated with lower odds of both social isolation indicators in boys, and with lower likelihood of having few friends in girls. Greater sitting time was associated with higher likelihood of social isolation, as was low (<1 h/d) [boys: OR: 1.54 (95% CI: 1.33 to 1.77); girls: OR: 1.31 (95% CI: 1.17 to 1.48] and high TV viewing (≥8 h/d) [boys: OR: 1.75 (95% CI: 1.47 to 2.09)]; girls: OR: 1.58 (95% CI: 1.37 to 1.82)]. More than 300 min/week of physical activity was sufficient to eliminate the association of high TV viewing and high sitting time with markers of social isolation in boys. CONCLUSION: Physical activity is associated with a lower prevalence of social isolation, especially among boys. Both high and low amounts of TV viewing increase the likelihood of social isolation. Physical activity reduced the association between TV viewing and sitting with social isolation among boys.
OBJECTIVE: To examine the relationship between physical activity, sedentary behaviors, and social isolation in a representative sample of Brazilian adolescents. METHOD: Cross sectional analyses using data from the Brazilian Scholar Health Survey conducted in 2015. The sample included 100,839 adolescents (mean age: 14.3 y, 51.4% Female) from 3040 schools. Information about social isolation (number of close friends and perceived loneliness), physical activity (International Physical Activity Questionnaire) and sedentary behaviors (total sitting time and TV viewing) were self-reported. Chronological age, race and type of city (state capital or other) were co-variables. Logistic regression models were used to analyze the data (results are presented as odds ratios (OR) with 95% confidence intervals). RESULTS: Physical activity was associated with lower odds of both social isolation indicators in boys, and with lower likelihood of having few friends in girls. Greater sitting time was associated with higher likelihood of social isolation, as was low (<1 h/d) [boys: OR: 1.54 (95% CI: 1.33 to 1.77); girls: OR: 1.31 (95% CI: 1.17 to 1.48] and high TV viewing (≥8 h/d) [boys: OR: 1.75 (95% CI: 1.47 to 2.09)]; girls: OR: 1.58 (95% CI: 1.37 to 1.82)]. More than 300 min/week of physical activity was sufficient to eliminate the association of high TV viewing and high sitting time with markers of social isolation in boys. CONCLUSION: Physical activity is associated with a lower prevalence of social isolation, especially among boys. Both high and low amounts of TV viewing increase the likelihood of social isolation. Physical activity reduced the association between TV viewing and sitting with social isolation among boys.
Authors: Rosario Padial-Ruz; José Antonio Pérez-Turpin; Mar Cepero-González; Félix Zurita-Ortega Journal: Int J Environ Res Public Health Date: 2019-12-21 Impact factor: 3.390
Authors: Yolanda Borrega-Mouquinho; Jesús Sánchez-Gómez; Juan Pedro Fuentes-García; Daniel Collado-Mateo; Santos Villafaina Journal: Front Psychol Date: 2021-02-24
Authors: Miguel Junior Sordi Bortolini; Bernardo Petriz; José Roberto Mineo; Rafael de Oliveira Resende Journal: Int J Environ Res Public Health Date: 2022-02-07 Impact factor: 3.390