Table 4.

ISway Change in Eyes Open vs. Eyes Closed Conditions

Normal Base Stance (n = 26)
ISway Measures	EO Mean (SE)	EC Mean (SE)	Mean Change EO vs. EC (SE)	Significance (P-value)€	95% CI
ISway JERK	2.134 (0.32)	3.925 (0.57)	1.791 (0.41)	.001**	0.646, 2.937
JERK AP	2.459 (0.28)	5.063 (0.77)	2.604 (0.61)	.001**	0.865, 4.343
JERK ML	1.047 (0.18)	1.457 (0.31)	0.411 (0.22)	.44	−0.222, 1.043
ISway PATH	8.081 (0.57)	10.606 (0.81)	2.526 (0.45)	< .001**	1.269, 3.783
PATH AP	6.357 (0.38)	8.810 (0.72)	2.453 (0.49)	< .001**	1.056, 3.85
PATH ML	3.874 (0.30)	4.656 (0.42)	0.782 (.25)	.03*	0.06, 1.504
Narrow Base Stance (n = 25)
ISway Measures	EO Mean (SE)	EC Mean (SE)	Mean Change EO vs. EC (SE)	Significance (P-value) €	95% CI
ISway JERK	4.787 (0.77)	7.705 (1.57)	2.918 (1.36)	.24	−0.914, 6.750
JERK AP	4.126 (0.60)	7.921 (1.98)	3.795 (1.79)	.27	−1.362, 8.952
JERK ML	4.871 (0.94)	9.374 (3.23)	4.502 (3.17)	.21	−4.649, 13.653
ISway PATH	12.559 (1.01)	16.192 (1.54)	3.633 (1.1)	.01*	0.512, 6.754
PATH AP	7.802 (0.57)	10.641 (1.15)	2.839 (0.87)	.02*	0.347, 5.332
PATH ML	7.899 (0.67)	10.304 (1.11)	2.405 (0.92)	.09	−0.252, 5.062,

Abbreviations and definitions: EO, Eyes Open; EC, Eyes Closed; ISway JERK: ISway JERK (m²/s⁵); ISway; PATH: Sway Acceleration Path Length* (m²/s²); AP, Anterior-posterior; ML, Medial-lateral;

^€,Bonferronni corrected P-value;

^*Significant at the 0.05 level;

^**Significant at the 0.01 level (2-tailed)