Table 2.

Means (Standard Deviation) and Percentiles for Physical Activity Variables (n = 179 Boys and 189 Girls)

Mean
(Standard Deviation)
Minimum25th50th75thMaximum
Accelerometry time monitored (min/d)
 Boys732.07 (51.17)478.00712.00733.25761.42875.50
 Girls735.48 (46.92)557.50710.25736.50762.50862.75
Total activity (cts/min)
 Boys765.75 (176.38)*363.45646.46751.91864.051599.06
 Girls700.89 (160.37)182.21591.30692.30789.501518.16
Vigorous activity (min)
 Boys31.47 (16.45)*2.2520.5029.2540.0092.00
 Girls24.37 (13.39)2.2514.6722.5032.0082.50
Compared with peers (1–5)
 Boys3.73 (0.78)*1.003.004.004.005.00
 Girls3.43 (0.83)1.003.003.004.005.00
TV viewing (h/d)
 Boys2.11 (1.17)0.251.002.003.007.00
 Girls2.18 (1.44)0.501.002.003.008.00
  • * Males significantly different than females (P < .05).

    Total activity = accelerometry-determined number of movement count/day divided by the number of monitored minutes/day. Vigorous activity = accelerometry-determined number of minutes/day at an estimated ≥6 METs. Compared with peers = parental ranking of child's physical activity level compared with peers—low (1) to high (5). TV viewing = parental report of child's usual TV viewing.