Activity intensity during 60-min PAL at follow-up and the equivalent lesson at baseline (excluding P.E. and drama); mean (SD)
| N | Baseline | Follow-up | Mean difference (95% CI) | |
| Sedentary activity (min) | 310 | 41.1 (8.4) | 42.1 (8.6) | 1.0 (−0.1 to 2.1) |
| Light activity (min) | 310 | 17.9 (7.6) | 16.9 (7.8) | −1.1 (−2.1 to 0) |
| Moderate activity (min) | 310 | 0.8 (1.0) | 0.9 (1.0) | 0 (−0.1 to 0.2) |
| Vigorous activity (min) | 310 | 0.2 (1.1) | 0.2 (0.6) | 0 (−0.1 to 0.1) |
PAL, physically active lessons.