Table 3. Changes in dynamic balance ability on the paretic side in stance phase.

Variables		PG (n=10)	CG (n=9)
M-L COP range (mm)
	Pre	15.0 ± 2.1	16.0 ± 2.4
	Post	12.0 ± 1.4	16.3 ± 2.4
	Pre-Post	−3.0 ± 2.4**	0.4 ± 1.0†
A-P COP range (mm)
	Pre	27.0 ± 3.2	26.2 ± 3.7
	Post	22.4 ± 2.7	26.5 ± 2.9
	Pre-Post	−4.6 ± 1.2***	0.3 ± 1.2†††
M-L COP velocity (mm/s)
	Pre	88.6 ± 33.5	91.8 ± 39.8
	Post	76.5 ± 25.6	92.6 ± 38.8
	Pre-Post	−12.1 ± 8.4*	0.7 ± 2.2†††
A-P COP velocity (mm/s)
	Pre	114.8 ± 31.2	117.0 ± 30.6
	Post	98.3 ± 25.2	117.1 ± 29.1
	Pre-Post	−16.5 ± 6.6**	0.1 ± 2.7†††

A-P COP: anterior-posterior center of pressure; M-L COP: medio-lateral center of pressure. Values are expressed as mean ± standard deviation (SD). *Means significant difference within group; †Means significant difference between groups