Table 1.
Physical characteristics of the study participants, grouped according to age and sex.
| Variables | Mean ± SD |
|---|---|
| Boys (n = 166) | |
| Age (years) | 9.4 ± 1.6 |
| Body height (cm) | 132.6 ± 10.0 |
| Body weight (kg) | 29.8 ± 8.0 |
| Body mass index (kg/m2) | 16.7 ± 2.6 |
| Body mass index z-score | −0.1 ± 1.3 |
| Sedentary time (%) | 46.0 ± 6.9 |
| Total moderate-to-vigorous physical activity (%) | 9.6 ± 2.5 |
| Ambulatory moderate-to-vigorous physical activity (%) | 5.9 ± 1.9 |
| Non-ambulatory moderate-to-vigorous physical activity (%) | 3.7 ± 1.1 |
| Girls (n = 202) | |
| Age (years) | 9.4 ± 1.6 |
| Body height (cm) | 132.8 ± 11.3 |
| Body weight (kg) | 28.7 ± 7.3 |
| Body mass index (kg/m2) | 16.0 ± 2.0 |
| Body mass index z-score | −0.2 ± 1.1 |
| Sedentary time (%) | 47.5 ± 7.6 |
| Total moderate-to-vigorous physical activity (%) | 7.4 ± 2.2 |
| Ambulatory moderate-to-vigorous physical activity (%) | 4.0 ± 1.4 |
| Non-ambulatory moderate-to-vigorous physical activity (%) | 3.4 ± 1.1 |