Change in characteristics of PE classes conducted by teachers in control and intervention schools*.
| ||Control children||Intervention children|
|Period of observation of PE classes of children 1st–3rd grades ||May–July |
|Number of PE classes observed at least 4 times each semester ||12||12||18||18|
|Actual duration of |
PE classes (median minutes)
|Four curricular aspects related to the way the teacher conducts the class (median score of a total of 16 points) ||9.9||10||10.1||14.31|
|Number of children wearing pedometers in 4 PE classes each semester ||155||155||482||482|
|Moderate/vigorous activity (MVA)a in PE classes: |
mean minutes (SD)
|13.8 (5.6)||10.2 (5.6)2||15.6 (5.3)||16.1 (5.0)|
|% Class time in MVA |
(calculated from real duration)
| 24.5|| 16.22||24.8 || 23.7|
|All PE classes had a programmed duration of 90 minutes; amoderate and vigorous activity.|
1P = 0.033; 2P = 0.000.