Table 4.

Basic statistical characteristics of postural stability parameters, evaluation of the significance of intergroup differences and effect size (one-foot test).

Variable (Unit of measurement)	One-foot test high-level group		One-foot test low-level group		t	p	z	ES
	arithmetic mean	SD	arithmetic mean	SD
Area (mm2)	3128.04	2543.64	4817.60	2688.49	−1,02	0.34	−0.66	0.64
Convex hull area (mm2)	2211.98	1831.18	3349.38	1823.37	7.00U	0.29	−0.62	0.62
Length (mm)	620.63	203.18	809.30	355.69	−1.03	0.33	−0.93	0.65
Length AP (mm)	406.79	104.65	485.62	160.59	−0.92	0.38	−0.75	0.58
Length ML (mm)	381.28	159.80	541.29	303.11	9.00U	0.53	−1.00	0.66
Mean distance (mm)	17.82	7.87	21.83	7.65	−0.82	0.44	−0.51	0.51
Mean distance AP (mm)	11.24	5.93	14.84	8.15	−0.80	0.45	−0.61	0.50
Mean distance ML (mm)	11.45	5.82	12.10	5.13	−0.76	0.47	−0.11	0.11
RMS distance (mm)	19.72	8.57	24.14	8.38	−0.82	0.43	−0.52	0.52
RMS distance AP (mm)	13.50	6.83	18.02	9.54	−0.86	0.41	−0.66	0.54
RMS distance ML (mm)	13.67	7.19	14.64	5.85	−0.23	0.82	−0.13	0.14
Mean velocity (mm/s)	31.03	10.16	40.47	17.78	−1.02	0.33	−0.93	0.65
Mean velocity AP (mm/s)	20.34	5.23	24.28	8.03	−0.92	0.38	−0.75	0.58
Mean velocity ML (mm/s)	19.06	7.99	27.06	15.16	9.00U	0.53	−1.00	0.66

Symbols the same as in Table 3.