Table 3.
Physical activity levels during school hours (means, standard deviations, [95% confidence intervals]) and statistics of the mixed-model analyses.
| Control (n = 144) | Intervention (n = 168) | Regression coefficient | 95% confidence interval | p | |
|---|---|---|---|---|---|
| Sedentary (minutes/day) | 228.9 (2.0) | 224.6 (1.8) | -2.6 (4.3) | -11.9 – 6.7 | 0.56 |
| [225.1; 232.8] | [221.0; 228.2] | ||||
| Light PA (minutes/day) | 98.2 (1.6) | 99.4 (1.5) | -0.3 (3.5) | -7.9 – 7.4 | 0.95 |
| [95.0; 101.4] | [96.5; 102.4] | ||||
| Moderate PA (minutes/day) | 12.6 (0.4) | 14.4 (0.3) | 1.7 (0.7) | -0.3 – 3.2 | 0.02∗ |
| [11.8; 13.3] | [13.7; 15.1] | ||||
| Vigorous PA (minutes/day) | 8.1 (0.4) | 9.3 (0.3) | 1.2 (0.7) | -0.2 – 2.6 | 0.09 |
| [7.3; 8.8] | [8.7; 10.0] | ||||
| MVPA (minutes/day) | 20.6 (0.7) | 23.8 (0.6) | 2.9 (1.3) | 0.2 – 5.6 | 0.04∗ |
| [19.3; 22.0] | [22.5; 25.0] |
∗Significant, p < 0.05; PA, physical activity; MVPA, moderate to vigorous physical activity. PA levels include the exercise break time in the intervention group.