Table 1.

ANOVA results. Degrees of freedom for torque = 6, for width = 2, for thumb position (ThuPos) = 2, for errors = 52. Total = 62

Source	Normal forces				Tangential forces
	SS	MS	F	P	SS	MS	F	P
Thumb
Torque	1905.41	317.57	20.15	0.000	934.68	155.78	81.87	0.000
Width	0.50	0.25	0.02	0.984	0.02	0.01	0.00	0.996
ThuPos	105.01	52.50	3.33	0.044	1006.38	503.19	264.45	0.000
Error	819.65	15.76	–	–	98.94	1.90	–	–
Total	2830.58	–	–	–	–	–	–	–
Index finger
Torque	1298.47	216.41	92.20	0.000	36.91	6.15	11.65	0.000
Width	0.04	0.02	0.01	0.992	0.46	0.23	0.44	0.649
ThuPos	152.57	76.29	32.50	0.000	97.53	48.76	92.34	0.000
Error	122.05	2.35	–	–	27.46	0.53	–	–
Total	1573.13	–	–	–	162.37	–	–	–
Middle finger
Torque	160.75	26.79	82.63	0.000	163.92	27.32	124.07	0.000
Width	1.68	0.84	2.60	0.084	0.12	0.061	0.28	0.760
ThuPos	17.17	8.59	26.49	0.000	70.88	35.44	160.93	0.000
Error	16.86	0.32	–	–	11.45	0.220	–	–
Total	196.47	–	–	–	246.37	–	–	–
Ring finger
Torque	67.62	11.27	11.34	0.000	82.25	13.71	49.90	0.000
Width	1.61	0.80	0.81	0.450	0.691	0.346	1.26	0.293
ThuPos	3.21	1.60	1.61	0.209	93.72	46.86	170.59	0.000
Error	51.67	0.99	–	–	14.28	0.275	–	–
Total	124.11	–	–	–	190.94	–	–	–
Little finger
Torque	187.42	31.23	29.60	0.000	28.35	4.72	18.03	0.000
Width	14.18	7.09	6.72	0.003	0.002	0.001	0.00	0.996
ThuPos	2.50	1.25	1.19	0.314	41.27	20.63	78.73	0.000
Error	54.88	1.06	–	–	13.63	0.26	–	–
Total	258.98	–	–	–	83.25	–	–	–