Table 2

Unadjusted average-daily physical activity and sedentary time estimates (means and 95% confidence intervals)
Whole sample (n= 825) Boys (n= 359) Girls (n= 466) p-gender difference
Physical activity energy expenditure (kJ/kg/d)1 73.6 (70.0 to 77.1) 83.5 (80.2 to 86.9) 65.9 (61.9 to 69.9) <0.001
Light physical activity (min/d)1 516.5 (495.1 to 537.9) 527.9 (506.3 to 549.6) 507.7 (482.7 to 532.8) 0.0037
Moderate physical activity (min/d)1 37.7 (33.4 to 42.4) 50.0 (43.7 to 57.2) 30.3 (26.2 to 35.0) <0.001
Vigorous physical activity (min/d)1 3.4 (2.5 to 4.6) 8.4 (6.6 to 10.8) 1.7 (1.2 to 2.4) <0.001
Sedentary time (min/d)1 363.9 (348.4 to 379.6) 338.4 (322.9 to 353.8) 383.7 (363.9 to 403.5) <0.001
<60 min MVPA/d (n (%))2 448 (54.3) 131 (36.5) 317 (68.0) <0.001

Data within person was collapsed to average values across days before analysis. Moderate and vigorous physical activity were transformed using natural log as these variables were skewed before analysis; presented values have been exponentiated back to the original scale. 1Gender comparisons made by linear regression accounting for within-school clustering; 2Gender comparison made by chi-square test.

Collings et al.

Collings et al. International Journal of Behavioral Nutrition and Physical Activity 2014 11:23   doi:10.1186/1479-5868-11-23

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