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Sex-specific physical-activity trajectories based on overall physical activity (counts/minute) and time spent in moderate-to-vigorous physical activity (MVPA) from 11 to 15 years. Mean values with 95% confidence intervals are presented for each trajectory. The results for boys are in dotted lines and the results for girls are in solid lines. Count/min, counts per minute (overall physical activity); MVPA, moderate-to-vigorous physical activity.
