Table 2. Anthropometric and behavioral characteristics (mean, SD) according to physical activity status (adequate vs. inadequate), in Greek boys and girls (aged 8 to 17-yr-old) of the study .
| Variable | Adequate | Inadequate | P value | ||||||
| Boys | Girls | Boys | Girls | ||||||
| Children | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| Age, (yr) | 10.0 | 1.2 | 10.3 | 1.2 | 10.3 | 1.2 | 10.1 | 1.2 | 0.001 |
| Body mass index (Kg/m2) | 18.9 | 3.5 | 18.8 | 3.5 | 19.2 | 3.6 | 19.0 | 3.5 | 0.001 |
| Waist circumference (cm) | 68.5 | 10.0 | 67.3 | 10.2 | 69.7 | 10.2 | 68.5 | 10.3 | 0.001 |
| Waist to height ratio | 0.3 | 0.5 | 0.5 | 0.6 | 0.3 | 0.6 | 0.5 | 0.6 | 0.016 |
| KIDMED score | 7.0 | 2.4 | 7.2 | 2.3 | 6.6 | 2.4 | 6.9 | 2.4 | 0.001 |
| Physical activity (h/wk) | 13.6 | 4.8 | 12.6 | 4.2 | 4.6 | 1.6 | 4.5 | 1.6 | 0.001 |
| Screen time, (h/wk) | 7.6 | 7.7 | 6.2 | 6.6 | 9.0 | 8.5 | 7.4 | 7.5 | 0.001 |
| Sleeping time (h/day) | 8.8 | 1.6 | 8.9 | 1.5 | 8.6 | 1.6 | 8.6 | 1.6 | 0.001 |
| 20m shuttle run (laps) | 34.1 | 18.0 | 26.5 | 13.7 | 29.2 | 17.1 | 23.6 | 13.0 | 0.001 |
| Standing long jump (cm) | 121.2 | 52.6 | 112.3 | 47.6 | 114.9 | 50.7 | 106.8 | 45.9 | 0.001 |
| Sit and reach (cm) | 13.1 | 7.2 | 17.3 | 7.9 | 12.6 | 7.2 | 16.6 | 7.7 | 0.001 |
| Sit-Ups in 30 sec (n) | 21.0 | 5.5 | 18.9 | 5.3 | 18.9 | 5.6 | 17.8 | 5.3 | 0.001 |
| 10X5-meter shuttle run (sec) | 21.2 | 3.3 | 22.0 | 3.3 | 21.8 | 3.3 | 22.5 | 3.3 | 0.001 |
| Adolescents | |||||||||
| Age, (yr) | 14.3 | 1.2 | 14.1 | 1.2 | 14.8 | 1.4 | 14.7 | 1.4 | 0.001 |
| Body mass index (kg/m2) | 21.5 | 3.9 | 21.1 | 3.6 | 21.9 | 3.9 | 21.4 | 3.8 | 0.001 |
| Waist circumference (cm) | 77.7 | 10.8 | 73.1 | 10.0 | 78.9 | 10.9 | 74.9 | 9.7 | 0.001 |
| Waist to height ratio | 0.4 | 0.6 | 0.5 | 0.6 | 0.4 | 0.6 | 0.5 | 0.6 | 0.012 |
| KIDMED score | 6.4 | 2.4 | 6.3 | 2.3 | 5.8 | 2.4 | 5.8 | 2.3 | 0.001 |
| Physical activity (h/wk) | 13.3 | 5.0 | 11.8 | 4.1 | 4.4 | 1.6 | 3.9 | 1.7 | 0.001 |
| Screen time (h/wk) | 11.4 | 9.8 | 10.6 | 9.4 | 11.7 | 9.8 | 11.2 | 9.6 | 0.001 |
| Sleeping time (h/day) | 8.2 | 1.5 | 8.1 | 1.5 | 7.8 | 1.7 | 7.6 | 1.5 | 0.001 |
| 20m shuttle run (laps) | 50.1 | 23.9 | 31.7 | 13.7 | 46.3 | 23.8 | 27.9 | 14.6 | 0.001 |
| Standing long jump (cm) | 143.2 | 73.9 | 115.3 | 60.6 | 135.8 | 76.7 | 107.9 | 60.2 | 0.001 |
| Sit and reach (cm) | 14.2 | 8.5 | 20.3 | 9.1 | 14.1 | 8.7 | 19.1 | 8.9 | 0.001 |
| Sit-Ups in 30 sec (n) | 24.5 | 5.5 | 21.4 | 5.4 | 22.8 | 5.7 | 18.5 | 4.9 | 0.001 |
| 10X5-meter shuttle run (sec) | 19.4 | 3.3 | 21.1 | 3.0 | 19.9 | 3.4 | 21.7 | 3.3 | 0.001 |
P values for differences between adequate and inadequate physical activity status from the same sex.