Table 2. The means and their standard deviation of the variables.

		Group	Platform		Foam pad
			EO	EC	EO	EC
AP	SD (mm)	SwDS	3.8+1.2	5.2+0.7	11.3+1.2	16.6+2.1
		CG	3.7+1.9	5.2+1.9	9.3+3.5	14.3+6.8
	MV(mm/s)	SwDS	13.3+4.9	18.9+5.9	54.5+27.5	76.6+25.3
		CG	8.3+0.9	12.1+3.0	16.5+2.5	36.9+9.2
	FR (Hz)	SwDS	0.59+0.26	0.64+0.24	0.77+0.28	0.78+0.27
		CG	0.43+0.17	0.41+0.15	0.32+0.14	0.44+0.12
	SE (-)	SwDS	0.75+0.18	0.72+0.16	0.67+0.10	0.65+0.09
		CG	0.97+0.37	0.80+0.27	0.56+0.17	0.64+0.09
	FD (-)	SwDS	1.46+0.10	1.49+0.08	1.53+0.09	1.55+0.08
		CG	1.38+0.08	1.41+0.07	1.39+0.08	1.44+0.05
ML	SD (mm)	SwDS	4.1+1.5	4.7+2.2	10.2+3.12	12.3+2.9
		CG	3.4+1.1	5.9+2.2	5.5+0.8	13.2+2.4
	MV(mm/s)	SwDS	10.6+2.6	14.5+5.7	43.0+12.4	52.3+18.3
		CG	8.3+1.7	14.7+5.1	16.0+2.6	41.0+7.8
	FR (Hz)	SwDS	0.44+0.13	0.52+0.11	0.68+0.16	0.67+0.18
		CG	0.42+0.15	0.43+0.14	0.47+0.10	0.50+0.06
	SE (-)	SwDS	0.69+0.07	0.75+0.05	0.68+0.03	0.70+0.02
		CG	0.65+0.22	0.60+0.14	0.58+0.07	0.57+0.05
	FD (-)	SwDS	1.41+0.07	1.47+0.05	1.52+0.05	1.52+0.06
		CG	1.42+0.06	1.42+0.06	1.45+0.06	1.46+0.02

(SD- COP standard deviation, MV- COP mean velocity, FR- COP frequency, SE- COP sample entropy, FD- fractal dimension).