The weight of pupils’ schoolbags in early school age and its influence on body posture

Table 4 Percentage values of the straps of school bags in stabilization, shortening and elongation according to sex

Subgroup sex	Shortening			Stabilization			Elongation
	Shortness	Appropriate	Lengthy	Shortness	Appropriate	Lengthy	Shortness	Appropriate	Lengthy
	N (%)	N (%)	N (%)	N (%)	N (%)	N (%)	N (%)	N (%)	N (%)
F - 68	12 (17.6%)	15 (22.1%)	1(1.5%)	2 (2.9%)	11 (16.2%)	-	6 (8.8%)	14 (20.6%)	8 (11.8%)
M - 87	-	9 (10.3%)	-	4 (4.6%)	10 (11.5%)	3 (3.4%)	-	31 (35.6%)	30 (34. %)

Stabilization - no significant changes in the straps of school bags in the final examination - relative to a preliminary examination
Shortening - significant shortening changes in the straps of school bags in the final examination - relative to a preliminary examination (defined as: shortness, appropriate, lengthy)
Elongation - significant elongation changes in the straps of school bags in the final examination - relative to a preliminary examination (defined as: shortness, appropriate, lengthy)
Abbreviations : F female, M male

ISSN: 1471-2474