Unadjusted values of body size, percent body fat, physical activity, fitness and pubertal development, medians and percentiles classified by elementary school grade and gender.

aPA is physical activity, the average daily steps per day; bCRF is cardiorespiratory fitness, the number of stages reached in the multistage run; c%BF is the percentage of body fat as determined by DEXA scan; dTanner stage is self-assessed pubertal stage ranking (N = 176 females, 164 males in 2007, 222 females and 212 males in 2009).