TABLE 2.
Synthesis of areas under the ROC curves between the physical fitness variables and the areal bone mineral density outcome of the total spine and pelvis.
| Test variable | Area under ROC curve | p-value | 95% CI | |
|---|---|---|---|---|
| Boys | ||||
| 20-m sprint | 0.710 | 0.014 | 0.572–0.848 | |
| 4 × 4 m square | 0.664 | 0.056 | 0.504–0.824 | |
| Horizontal jump | 0.652 | 0.076 | 0.513–0.790 | |
| 2 kg medicine ball throw | 0.712 | 0.016 | 0.579–0.846 | |
| Girls | ||||
| 20-m sprint | 0.703 | 0.016 | 0.538–0.867 | |
| 4 × 4 m square | 0.641 | 0.093 | 0.477–0.806 | |
| Horizontal jump | 0.539 | 0.643 | 0.385–0.693 | |
| 2 kg medicine ball throw | 0.806 | 0.000 | 0.686–0.927 | |
| Cut-off point (Z score) | Sensibility | Specificity | Percentile value | |
| 20-m Sprint test | ||||
| Boys | −0.173 | 0.929 | 0.563 | 47.5 |
| Girls | −0.038 | 0.800 | 0.576 | 50.0 |
| 2 kg medicine ball throw test | ||||
| Boys | −0.208 | 0.769 | 0.646 | 42.4 |
| Girls | −0.233 | 0.800 | 0.759 | 35.8 |
Bold p-values denote a significant difference (p < 0.05); p-value: statistical probability value; 95% CI: 95% confidence interval.