Table 3.
Means and standard deviations (SD) for anthropometric and physical activity data by trial arm at T0
| Control | Intervention | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | Mean | SD | Min | Max | n | Mean | SD | Min | Max | |
| BMI (kg/m2) | 255 | 18.4 | 3.3 | 12.8 | 29.7 | 284 | 18.8 | 3.4 | 13.5 | 33.1 |
| BMI SDS | 248 | 0.51 | 1.2 | −2.6 | 3.3 | 272 | 0.61 | 1.2 | −2.1 | 3.4 |
| Age (yrs) | 248 | 10.0 | 0.55 | 9.1 | 11.1 | 272 | 10.1 | 0.59 | 7.8 | 11.1 |
| IMD | 248 | 19.8 | 17.0 | 2.9 | 67.6 | 277 | 21.5 | 17.7 | 1.4 | 66.2 |
| MVPA weekday (mins) | 228 | 60.2 | 23.0 | 21.1 | 187.4 | 241 | 59.2 | 21.8 | 23.2 | 155.3 |
| CPM weekday | 228 | 550.2 | 153.9 | 265.3 | 1346.1 | 241 | 546.6 | 146.8 | 261.9 | 1245.9 |
| MVPA after school (mins)* | 228 | 13.4 | 8.2 | 1.5 | 71.4 | 241 | 12.1 | 6.7 | 1.6 | 37.4 |
| CPM after school* | 228 | 612.0 | 331.1 | 11.1 | 2074.4 | 241 | 549.4 | 335.3 | 71.4 | 2604.9 |
*MVPA recorded between 3.30 pm and 8.30 pm on schooldays (pupils with valid weekday accelerometer data).
Valid MVPA weekdays/after school: Participant’s accelerometer data met the overall wear time criteria of at least 500 minutes between 6 am and 11 pm mins on at least two weekdays.