Table 2. Comparison of static balance with groups and between groups (n=30).

	Values				Change values
Parameters	Aqua group (n=15)		Land group (n=15)		Aqua group(n=15)	Land group(n=15)
	Before	After	Before	After	Before-after	Before-after
ML sway velocity (mm/s)	10.4 (6.3)	7.1 (6.1) **	9.9 (4.5)	8.0 (4.0) **	3.2 (1.1) *	1.9 (0.4)
AP sway velocity (mm/s)	16.1 (7.3)	12.6 (6.1) **	16.7 (5.4)	14.1 (4.0) **	3.9 (1.6) *	2.4 (2.3)
sway area (mm2/s)	48.4 (16.1)	41.8 (11.2) ** *	50.2 (17.6)	46.8 (9.7) ***	7.0 (2.2) *	4.8 (1.5)

Values are means (SD). ML sway velocity, mediolateral sway velocity; AP sway velocity, anteroposterior sway velocity. *p<0.05, **p<0.01, ***p<0.001