Self-reported physical activity and sedentary behaviour amongst adolescents in Sweden vary depending on sex, age and parental education.

<bold>Aim: </bold>The aim of this study was to investigate self-reported physical activity and sedentary behaviour by sex, age and parental education in a large representative sample of Swedish adolescents.<bold>Methods: </bold>This study is based on data from the national dietary survey Riksmaten Adolescents, which was conducted by the Swedish Food Agency in 2016-2017. In total, 3477 students from grade five (11-12 years), eight (14-15 years) and eleven (17-18 years) were included. A web questionnaire was used to collect information about physical activity and sedentary behaviour.<bold>Results: </bold>In total, 53% reported active transport to and from school, 93% that they usually participate in the physical education, 76% reported a physically active leisure time, and 66% reported that they participated in organised physical activities. In addition, 12% and 6% reported two hours or less of screen time on weekdays and weekends, respectively. Participation in physical activity was generally lower amongst girls, older adolescents and for those from families with low-parental education.<bold>Conclusion: </bold>This study provide reference values for self-reported physical activities and sedentary behaviours amongst adolescents in Sweden. Strategies to increase physical activity and reduce screen time are needed, particularly amongst girls, older adolescents and amongst those with low-parental education. [ABSTRACT FROM AUTHOR]