Table 1.

Center of pressure (COP) parameters during quiet standing without perturbation (static condition) before and after the training.

Variables		Eyes open							Eyes closed
		Before		After		Statistic			Before		After		Statistic
		Mean	SD	Mean	SD	t	p	ES	Mean	SD	Mean	SD	t	p	ES
Excursion (mm)	AP	3.81	1.59	4.00	2.60	−0.43	0.67	−0.09	4.06	1.87	4.34	2.59	0.47	0.64	−0.12
	ML	1.64	1.28	1.68	1.81	−0.17	0.87	−0.03	1.34	0.67	1.42	1.37	−0.23	0.82	−0.07
	RD	4.48	2.08	4.77	3.05	−0.64	0.53	−0.11	4.53	1.93	4.90	2.79	−0.61	0.55	−0.15
Mean Velocity (mm/sec)	AP	6.67	1.71	6.39	1.95	0.69	0.50	0.14	8.54	2.37	9.34	3.23	−1.14	0.27	0.28
	ML	3.57	1.76	3.38	1.90	0.94	0.36	0.10	3.34	1.12	3.38	1.27	−0.11	0.91	0.03
	RD	8.31	2.37	7.92	2.79	0.89	0.39	0.15	9.79	2.72	10.58	3.56	−1.03	0.32	0.25
Sway Area(mm2)		295.64	259.08	402.19	614.26	−1.05	0.31	0.23	295.86	274.61	416.13	432.97	−1.33	0.20	0.33

AP: anterior-posterior; ML: medio-lateral; RD: Resultant distance; SD: standard deviation; ES: effect size.