The Assessment of Static Balance in Patients after Total Hip Replacement in the Period of 2-3 Years after Surgery

Table 4

Gender differences in the stabilometric parameters in the study group and the control group.

Stabilometric parameters	Study group
	Men			Women
	M	Me	SD	M	Me	SD
EC/EO ratio
COP path length (cm)	2,03	1,96	0,70	2,43	2,26	0,91	0,047
COP path area (cm^2)	2,61	2,29	1,88	3,09	1,97	3,09	0,730
Eyes opened (EO)
COP deviation mean velocity (AP) (cm/s)	0,62	0,57	0,33	0,42	0,40	0,16	≤0,001
COP deviation mean velocity (ML) (cm/s)	0,73	0,65	0,33	0,48	0,46	0,21	≤0,001
COP path length (cm)	30,43	26,83	14,9	20,16	19,03	8,50	0,001
COP path area (cm^2)	2,38	1,92	1,66	1,75	1,11	2,01	0,015
Eyes closed (EC)
COP deviation mean velocity (AP) (cm/s)	0,98	0,97	0,39	0,84	0,77	0,35	0,173
COP deviation mean velocity (ML) (cm/s)	1,44	1,38	0,59	1,26	1,05	0,71	0,129
COP path length (cm)	57,40	56,29	23,60	48,45	38,80	25,41	0,088
COP path area (cm^2)	4,95	3,49	3,19	3,81	2,36	3,80	0,076
Stabilometric parameters	Control group
	Men			Women
	M	Me	SD	M	Me	SD
EC/EO ratio
COP path length (cm)	1,89	1,88	0,58	2,04	1,96	0,81	0,685
COP path area (cm^2)	2,65	1,99	1,66	2,67	2,32	2,22	0,898
Eyes opened (EO)
COP deviation mean velocity (AP) (cm/s)	0,46	0,39	0,20	0,43	0,41	0,18	0,765
COP deviation mean velocity (ML) (cm/s)	0,51	0,42	0,27	0,47	0,44	0,20	0,669
COP path length (cm)	21,91	17,92	10,81	20,13	18,89	8,88	0,608
COP path area (cm^2)	2,34	0,92	4,02	1,45	1,22	0,83	0,417
Eyes closed (EC)
COP deviation mean velocity (AP) (cm/s)	0,76	0,64	0,31	0,77	0,69	0,37	1,000
COP deviation mean velocity (ML) (cm/s)	0,98	0,79	0,45	1,01	0,80	0,73	0,701
COP path length (cm)	39,40	33,61	17,41	40,83	33,81	26,40	0,733
COP path area (cm^2)	4,16	3,26	5,25	3,89	2,55	5,24	0,864

AP: anterior-posterior; COP: center of pressure; EC: eyes closed; EO: eyes opened; EC/EO ratio: eyes closed/eyes opened ratio; M: mean; Me: median; ML: medial-lateral; : Mann–Whitney test probability value; SD: standard deviation.