958645.fig.002a
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958645.fig.002b
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958645.fig.002c
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Figure 2: Physical activity trajectories of students from April 2008 to December 2011, by baseline physical activity. Linear regressions of physical activity (minutes per day) across semesters for each student with baseline and at least 1 valid follow-up measurement, by baseline PA, are shown in gray. Linear growth curves showing averaged baseline physical activity and averaged rate of change in physical activity among all students, by baseline PA, are shown in black.