Table 5 Correlations between the changes in the weight of school bags, in straps length, positioning and changes in posturometric parameters in both groups after 1 year
From: The weight of pupils’ schoolbags in early school age and its influence on body posture
Parameters | Sex | The differences of school bags between initial and follow-up of | ||
|---|---|---|---|---|
Weight | Straps | Positioning on the back | ||
Plumb – line anal cleft (cm) | F | 0.22* | −0.006 | −0.12 |
M | 0.19 | 0.14 | 0.08 | |
Scapulae level (°) | F | −0.07 | 0.01 | −0.08 |
M | −0.06 | −0.001 | −0.0001 | |
Kyphosis angle (°) | F | 0.1 | 0.17 | 0.53* |
M | −0.05 | 0.13 | −0.07 | |
Lordosis angle (°) | F | 0.1 | 0.23* | 0.4* |
M | 0.07 | 0.17 | 0.16 | |
Angle of trunk rotation C7 – Th1 (°) | F | −0.12 | 0.08 | 0.01 |
M | 0.02 | 0.04 | 0.14 | |
Angle of trunk rotation Th (°) | F | 0.33* | −0.24* | −0.21 |
M | 0.23* | 0.07 | 0.11 | |
Angle of trunk rotation Th-L/L(°) | F | 0.14 | −0.01 | −0.09 |
M | 0.24* | 0.04 | 0.15 | |
Sum of trunk rotation (HUMP SUM°) | F | 0.23* | −0.34* | 0.04 |
M | 0.11 | −0.004 | 0.09 | |
Mathiass test | F | −0.25* | −0.05 | 0.11 |
M | −0.37* | 0.01 | −0.09 | |