Table 1.

Parameters measured at the initial contact and during slipping for each subject and for the different loads.

subject	W (N)	CDF (–) mean ± s.d.	A0 (mm2) mean ± s.d.	Aslip (mm2) mean ± s.d.	E* (kPa) mean ± s.d.	A0 ∼ Wn n(R2)	Ao ∼ (W/E*)n n (R2)
1	0.5	1.92 ± 0.39	83 ± 11	67 ± 13	30.4 ± 3.1	0.52 (0.84)	0.91 (0.93)
	1.0	1.60 ± 0.26	124 ± 12	90 ± 14	36.4 ± 2.7
	2.0	1.29 ± 0.21	167 ± 15	112 ± 19	52.0 ± 4.1
2	0.5	2.41 ± 0.33	92 ± 8	65 ± 9	35.9 ± 3.1	0.43 (0.89)	0.83 (0.91)
	1.0	1.92 ± 0.20	129 ± 10	82 ± 15	45.3 ± 3.9
	2.0	1.53 ± 0.14	162 ± 3	101 ± 14	68.8 ± 5.3
3	0.5	2.21 ± 0.31	116 ± 7	82 ± 12	27.7 ± 2.2	0.36 (0.87)	0.73 (0.87)
	1.0	1.73 ± 0.24	151 ± 14	97 ± 14	39.0 ± 2.6
	2.0	1.33 ± 0.22	188 ± 5	119 ± 16	57.1 ± 4.5
4	0.5	2.30 ± 0.42	97 ± 18	62 ± 12	30.8 ± 4.4	0.42 (0.62)	0.81 (0.78)
	1.0	1.88 ± 0.28	131 ± 23	81 ± 15	38.9 ± 4.8
	2.0	1.54 ± 0.24	168 ± 22	102 ± 17	57.2 ± 6.9