Table 1. Test-retest reliability of COP-based parameters in three positions.

Position	P	PML	PAP	MML	MAP	A	SA	VM	VML	VAP	DML	DAP
Eyes open	0.87 (0.73–0.96)	0.98 (0.91–0.99)	0.86 (0.75–0.94)	0.81 (0.79–0.87)	0.79 (0.69–0.95)	0.91 (0.79–0.98)	0.84 (0.74–0.95)	0.94 (0.76–0.98)	0.87 (0.77–0.94)	0.75 (0.68–0.83)	0.86 (0.73–0.96)	0.90 (0.74–0.98)
Eyes closed	0.92 (0.86–0.97)	0.97 (0.83–0.99)	0.91 (0.82–0.95)	0.86 (0.75–0.91)	0.84 (0.69–0.98)	0.88 (0.75–0.94)	0.93 (0.84–0.99)	0.98 (0.85–0.99)	0.85 (0.65–0.95)	0.81 (0.71–0.88)	0.78 (0.65–0.92)	0.82 (0.68–0.95)
Seated	0.89 (0.76–0.95)	0.95 (0.68–0.99)	0.82 (0.63–0.98)	0.91 (0.79–0.99)	0.75 (0.63–0.91)	0.76 (0.66-0.89)	0.88 (0.83–0.96)	0.99 (0.91–0.99)	0.94 (0.78–0.99)	0.86 (0.73–0.97)	0.92 (0.77–0.99)	0.87 (0.65–0.98)

Values presented are ICC values with 95% confidence intervals.

P: total path length; P_ML: path length along the medial-lateral axis; P_AP: path length along the anterior-posterior axis; M_ML: maximal range of sway in the medial-lateral direction; M_AP: maximal range of sway in the anterior-posterior direction; SA: sway angle; V_M: mean sway velocity; V_ML: velocity along the medial-lateral axis; V_AP: velocity along the anterior–posterior axis; A: covered area; D_ML: average center displacement deflection along the medial–lateral axis; D_AP: average center displacement deflection along the anterior-posterior axis