Physical activity and sedentary behaviors in Polish children and adolescents.

Participating in physical activity (PA) is essential for children's proper development. Promoting physical activity from early school years is considered a highly important prevention task for good health. The aim of this study was to evaluate the level of PA and sedentary behavior of children and adolescents aged 6-17 years attending primary and junior high schools in Wroclaw, Lower Silesia, Poland. The study assessed the frequency of various forms of PA and sedentary behavior in children and adolescents. The age differences in PA and sedentary behavior in the cohort studied was also analyzed. Survey study to assess children's and adolescents' physical activity and sedentary behavior were based on a parent-reported questionnaire. A total of 2913 children and adolescents aged 6-17 years (average age, 11.38 years) from Wroclaw, Poland, who participated in a pro-health campaign "Let's Get the Kids Moving." This project promotes a healthy lifestyle among primary and middle school students. The frequency of physical activity significantly decreased as children grew older (p < 0.0001). As many as 18.6% of adolescents 13-17 years old undertook the recommended level of physical activity less than once a week. Time spent in front of the television or computer by pupils in group 3 was longer than in younger children (p < 0.0001). Nearly 19% of adolescents (13-17 years old) spent 5 h or more daily in a sitting position in front of the television or computer on weekends. Polish children and adolescents do not spend the recommended level of time on physical activity and spend excessive time in front of the television and other electronic devices. The level of physical activity decreases as the number of hours spent in a sitting position increases with increasing age. Actions should be taken to avoid the long-term consequences of these behaviors.

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Declaration of Competing Interest The authors declare that they have no competing interests.