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The aim of this research is (i) to examine trajectories in PA and ST from class 7-9 among students in Berlin, and (ii) to investigate the relationship of the trajectories with individual facets and school type. For the present analyses, changes in students' PA and ST across three time points from 7th to 9th quality had been considered via self-report surveys. Negative and positive trajectories had been defined both for PA (good increasing or regularly large, negative decreasing or regularly