The impact of a school backpack's weight, which is carried on the back of a 7-year-old students of both sexes, on the features of body posture in the frontal plane

Mrozkowiak, Mirosław; Stępień-Słodkowska, Marta

doi:10.1186/s13102-022-00448-8

BMC Sports Science, Medicine and Rehabilitation

Table 3 Significance of differences in the value of posture features in the frontal plane between 1st and 2nd measurement with the back loading among girls

From: The impact of a school backpack's weight, which is carried on the back of a 7-year-old students of both sexes, on the features of body posture in the frontal plane

No	Variables	Measurement 1			Measurment 2			Wilcoxon’s test
No	Variables	M	Me	SD	M	Me	SD	Z	p
1	DCK	308.98	314.05	22.87	290.72	292.65	21.15	− 4.782	< 0.001**
2	Alfa	8.28	8.45	1.52	4.82	4.85	2.10	− 4.783	< 0.001**
3	Beta	9.90	9.75	1.13	21.76	21.70	1.17	− 4.785	< 0.001**
4	Gamma	11.10	11.20	1.19	9.10	9.00	1.16	− 4.788	< 0.001**
5	Delta	29.28	29.65	2.45	35.69	35.40	2.70	− 4.785	< 0.001**
6	KPT−	3.74	4.15	1.34	5.72	6.40	1.59	− 3.929	< 0.001**
7	KPT+	4.40	4.75	0.69	15.43	16.50	2.32	− 2.807	0.005**
8	DKP	278.15	279.00	8.96	269.48	273.10	20.01	− 4.785	< 0.001**
9	KKP	159.04	159.00	1.55	149.14	148.90	1.63	− 4.785	< 0.001**
10	RKP	185.63	185.30	13.49	181.28	180.50	13.68	− 4.389	< 0.001**
11	GKP	20.26	19.95	1.40	15.43	15.35	1.69	− 4.786	< 0.001**
12	DLL	246.61	247.00	11.98	242.15	242.90	12.20	− 4.785	< 0.001**
13	KLL	161.82	161.95	2.22	153.42	153.35	2.52	− 4.784	< 0.001**
14	RLL	134.86	135.60	11.07	130.68	131.55	10.78	− 4.785	< 0.001**
15	GLL	23.44	24.45	3.19	32.84	32.65	3.36	− 4.788	< 0.001**
16	KNT−	1.56	1.40	1.04	2.61	2.25	1.03	− 4.116	< 0.001**
17	KNT+	2.04	2.35	1.50	3.83	4.10	1.88	− 2.524	0.012**
18	KLB−	2.60	1.90	1.64	4.31	4.00	1.31	− 2.527	0.012**
19	KLB+	1.60	1.05	1.39	3.02	2.70	1.59	− 4.112	< 0.001**
20	UL−	3.01	4.15	2.30	4.35	5.30	2.29	− 2.527	0.012**
21	UL+	2.43	1.95	1.59	3.74	3.55	1.39	− 4.078	< 0.001**
22	UB−	2.70	3.30	1.96	3.90	4.75	1.85	− 2.536	0.011**
23	UB+	3.79	4.00	2.64	5.21	5.05	2.69	− 4.079	< 0.001**
24	OL−	8.89	8.10	5.71	10.52	10.15	5.64	− 4.111	< 0.001**
25	OL+	4.16	4.30	2.55	5.61	5.25	2.77	− 2.527	0.012**
26	TT−	5.44	4.80	2.05	7.56	6.85	2.12	− 2.521	0.012**
27	TT+	8.95	8.30	4.38	10.98	10.35	4.31	− 4.110	< 0.001**
28	TS−	5.74	5.10	1.63	8.11	7.70	1.32	− 2.530	0.011**
29	TS+	8.44	8.35	4.99	10.44	10.20	4.83	− 4.113	< 0.001**
30	KNM−	6.29	7.50	3.48	8.38	8.80	3.56	− 4.024	< 0.001**
31	KNM+	3.62	3.40	2.36	5.78	5.60	2.47	− 2.677	0.007****
32	KSM−	3.19	2.45	2.78	4.66	4.20	2.89	− 2.524	0.012**
33	KSM+	5.68	5.50	2.87	7.95	7.75	2.67	− 4.110	< 0.001**
34	UK−	2.69	1.50	2.15	4.79	4.05	2.05	− 2.527	0.012**
35	UK+	8.03	6.95	5.33	9.74	9.20	5.23	− 4.110	< 0.001**

Source: Own research
**p < 0.01

Back to article page

ISSN: 2052-1847

Contact us

General enquiries: journalsubmissions@springernature.com