Table 3.
Group differences for age, anthropometrics and physical activity between the intervention and the control group of the present study sample evaluating back function parameters (Independent samples T-test)
| Age, anthropometrics and physical activity | Mean ± SD | Group difference | ||
|---|---|---|---|---|
| Intervention | Control | df | T | |
| Age at baseline (year) | 9.8 ± 0.9 | 9.9 ± 0.6 | 66 | 0.829 |
| Height at baseline (cm) | 142.2 ± 8.9 | 140.5 ± 7.0 | 65.1 | 0.857 |
| Weight at baseline (kg) | 36.0 ± 7.4 | 32.7 ± 4.3 | 64.3 | 2.369* |
| Change in height pre-post (cm) | 10.1 ± 2.3 | 9.0 ± 2.7 | 66 | 1.775 |
| Change in weight pre-post (kg) | 8.2 ± 3.5 | 6.5 ± 2.3 | 65.9 | 2.401* |
| Total amount of physical activity (min/week) | 1,277 ± 759 | 1,254 ± 796 | 61 | 0.906 |
Intervention group: n = 41; control group: n = 28
SD standard deviation
*P < 0.05, P < 0.09