The demographic influence on physical activity trends among South Australian children and adolescents

Introduction: It is concerning only 19% of Australian youth participate in the required 60 min of daily moderate to vigorous physical activity (MVPA). The aim of this study was to report trends in children's physical activity participation over three decades within defined physical activity (PA) contexts, with a particular focus on the demographic influence on PA temporal trends. Data at three time points were used to assess trends within the contexts of school active transport, organised sport, physical education (PE) and school break times.