Table 4.
The relationship between the child's school backpack load and the occurrence of changes in the parameters of the child's body posture in the sagittal plane, using Spearman's correlation coefficient.
| Anthropometric parameters |
r s, p (value) | Interpretation |
|---|---|---|
| ThS | −0.3999, (0.017) | The heavier the backpack, the lower the total length of the spine |
|
| ||
| THL | −0.2313, (0.181) | Not significant |
|
| ||
| LS | −0.3352, (0.049) | The heavier the backpack, the lower the length of the lumbar lordosis |
|
| ||
| KKP | −0.2695, (0.117) | Not significant |
|
| ||
| KKL | −0.5065, (0.002) | The heavier the backpack, the smaller the lumbar lordosis angle |
|
| ||
| TTI | −0.0537, (0.759) | Not significant |
|
| ||
| SCR | −0.4279, (0.010) | The heavier the backpack, the smaller the sacral angle |
ThS (mm): total length of the spine.
THL (mm): length of the thoracic spine.
LS (mm): length of the lumbar spine.
KKP (degrees): thoracic kyphosis angle.
KKL (degrees): lumbar lordosis angle.
TTI (degrees): total angle of anterior trunk inclination.
SCR (degrees): sacral angle.
r s: Spearman's correlation coefficient.