Table 3 Participant characteristics at baseline
| Â | Total M (SD) | Control M (SD) | Intervention M (SD) |
|---|---|---|---|
N | 695 | 342 | 353 |
Female:Male | 345:350 | 160:182 | 185:168 |
Age (years) | 12.97 (0.54) | 13.02 (0.54) | 12.92 (0.53) |
Height (cm) | 159.6 (8.2) | 160.0 (8.36) | 159.3 (8.0) |
Weight (kg) | 50.4 (11.4) | 50.7 (12.0) | 50.1 (10.8) |
BMI (weight/height in m2) | 19.7 (3.5) | 19.7 (3.8) | 19.6 (3.3) |
BMI z-score | 0.32 (1.18) | 0.29 (1.24) | 0.36 (1.12) |
Education level (N) | |||
 Lower Vocational Ed. | 561 | 258 | 303 |
 Senior General Secondery Ed. | 134 | 84 | 50 |
Weight status (N[%])a | |||
 Underweight | 16 (2.3) | 9 (2.6) | 7 (2.0) |
 Normal weight | 477 (68.6) | 231 (67.5) | 246 (69.7) |
 Overweight | 140 (20.1) | 65 (19.0) | 75 (21.2) |
 Obesity | 61 (8.8) | 36 (10.5) | 25 (7.1) |
N | 423 | 199 | 224 |
Fat mass (%) | 25.1 (8.0) | 23.3 (8.2) | 26.8 (7.5) |
 Fat mass (Kg) | 13.1 (6.5) | 12.0 (6.5) | 14.0 (6.3) |
 Fat Free mass (Kg) | 37.3 (7.0) | 37.8 (7.4) | 36.8 (6.6) |
N | 460 | 226 | 234 |
Physical Activity (CPM) | 677 (200) | 675 (189) | 679 (209) |
 Sedentary PA (%) | 74.9 (5.6) | 75.1 (5.2) | 74.8 (6.0) |
 Light PA (%) | 22.8 (4.9) | 22.6 (4.5) | 23.0 (5.2) |
 Moderate to Vigorous PA (%) | 2.2 (1.4) | 2.3 (1.4) | 2.2 (1.4) |
Accelerometer wear-time T0 (min) | 3278 (984) | 3340 (926) | 3224 (1032) |