Table 1. Patients investigated.

			Body	Gait	Mean Gliding Speed
Patient	Age	Gender	weight	Velocity	Extension | Flexion
	[years]		[N]	[m/s]	[m/s]
H1	56	m	754	1.0	0.02 | 0.04
H2	62	m	755	1.0	0.03 | 0.05
H3	60	m	880	0.8	0.02 | 0.06
H4	50	m	783	1.0	0.03 | 0.06
H5	62	f	853	0.9	0.02 | 0.08
H6	69	m	832	1.1	0.03 | 0.05
H7	53	m	899	1.1	0.03 | 0.06
H8	56	m	779	1.1	0.03 | 0.06
Average	59	-	821	1.0	0.03 | 0.06