Table 2. Comparison of PHD, KHD, and AHD during OLS, STS, SU, and SD tests between two groups

		Experimental group (n=42)	Control group (n=44)	t	p
OLS test	PHD	11.37±2.01	8.85±0.85	7.61	<0.001*
	KHD	6.17±1.27	4.34±0.86	7.84	<0.001*
	AHD	0.74±0.45	0.34±0.23	5.12	<0.001*
STS test	KHD	2.85±2.32	0.39±2.04	4.76	<0.001*
	AHD	0.30±0.36	0.10±0.60	1.90	0.061
SU test	PHD	9.90±1.33	9.16±1.97	2.02	0.047*
	KHD	5.53±1.58	4.30±1.22	4.05	<0.001*
	AHD	0.39±0.25	0.16±0.18	4.72	<0.001*
SD test	PHD	5.04±1.32	4.15±1.33	3.11	0.003*
	KHD	3.21±3.62	1.69±2.71	2.20	0.031*
	AHD	1.81±1.83	0.68±0.64	3.89	<0.001*

PHD, pelvic horizontal displacement; KHD, knee horizontal displacement; AHD, ankle horizontal displacement; OLS, one-leg-standing; STS, sit-to-stand; SU, stair-up; SD, stair-down.