Days that children were absent from preschool and days on which total wear time ≥18 hours were excluded from the analyses because they do not represent typical school days. Children who had at least 3 days of valid data were included in the analyses. The average time spent in light PA, moderate-to-vigorous PA (MVPA), and total PA was expressed as minutes per hour of observation (minute/hour), using each child's wear time as the divisor to account for differences in monitoring time.