Table 3.

Stiffness measurements and Oswestry scores at each measurement session (n=48). Values represent mean (standard deviation).

		Oswestry Score	Global Stiffness (N)	Terminal Stiffness (N/mm)
Session 1:	SSI	32.2 (11.9)	5.6 (1.6)	4.3 (1.8)
	SS2		5.4 (1.7)	3.9 (1.4)
	Change from SS1 to SS2		0.12 (0.39)	0.39 (1.2)
	p value		0.034	0.027
Session 2:	SS3	26.2 (14.1)	5.5 (1.5)	4.3 (1.5)
	Change from SSI to SS3	5.8 (9.5)	0.022 (0.78)	0.0009 (1.3)
	p value	<0.001	0.85	1.0
	SS4		5.4 (1.6)	4.0 (1.3)
	Change from SS3 to SS4		0.084 (0.55)	0.34 (0.63)
	p value		0.30	0.001
Session 3:	SS5	23.9 (11.4)	5.4 (1.5)	4.1 (1.2)
	Change from SS1 to SS5	8.1 (11.4)	0.26 (1.5)	0.12 (0.81)
	p value	<0.001	0.31	0.23