Table 2.

Selected postural stability parameters. Range anterior–posterior (AP): center of pressure (COP) range in the AP direction, range medial–lateral (ML): COP range in the ML direction, path length: resultant COP path length, mean velocity: resultant COP mean velocity, and area: 95% ellipse area. The symbols * or ** denote which of the two variables were significantly different at each parameter (p < 0.05).

		Range AP (cm)	Range ML (cm)	Mean Velocity (cm/s)	Path Length (cm)	Area (cm2)
Eyes open	TD	0.81 ± 0.15 *	1.49 ± 0.10 *	1.46 ± 0.27 *	29.28 ± 5.49 *	0.92 ± 0.22 *
	PIGD	1.06 ± 0.13 **	1.81 ± 0.16 **	1.48 ± 0.23 **	29.62 ± 4.57 **	1.53 ± 0.32 **
Eyes closed	TD	1.15 ± 0.24 *	2.81 ± 0.39 *	2.56 ± 0.66 *	51.23 ± 13.16 *	2.95 ± 1.05 *
	PIGD	1.14 ± 0.14 **	2.75 ± 0.36 **	2.01 ± 0.20 **	40.23 ± 4.01 **	2.51 ± 0.45 **