Figure 1From: Longitudinal patterns of physical activity in children aged 8 to 12 years: the LOOK studyMean pedometer steps per day, girls and boys combined for each measurement year from grade 2 (age 8 years) to grade 6 (age 12 years). The left Y axis represents the square root of steps per day used for statistical analysis and the non linear right Y axis represents actual steps per day.Back to article page