Physical activity change and stability patterns from adolescence to early adulthood : how activity domains and sedentary behaviour are associated with maintaining, increasing and decreasing activity?

Background Longitudinal studies demonstrate that physical activity (PA) declines on average from adolescence to early adulthood. However, some subgroups of adolescents increase activity while others decrease or maintain high or low activity. Determinants of change or maintenance of (in)activity may differ between subgroups and are valuable information for targeted health promotion. The purpose of this study was to identify PA patterns from adolescence to early adulthood, and also to explore how different activity domains and Sedentary Behaviour (SB) are associated with PA patterns. Methods The data of this observational cohort study (collected in 2013/2014 and 2017/2018) consisted of 254 Fi…