Table 1.

Linearity coefficients of normal and shear strain vs. percent motion completion at five regions of the disc.

Disc	Normal strain					Shear strain
	Anterior	Posterior	Left	Right	Center	Anterior	Posterior	Left	Right	Center
L2L3	0.92	0.97	0.43	0.54	0.44	0.84	0.86	0.83	0.86	0.86
L3L4	0.94	0.97	0.49	0.52	0.51	0.83	0.87	0.80	0.88	0.87
L4L5	0.97	0.99	0.78	0.38	0.69	0.81	0.84	0.88	0.79	0.85
L5S1	0.88	0.92	0.65	0.46	0.62	0.44	0.50	0.43	0.36	0.47

The linear R-squared coefficients were computed for each participant, segment, and disc region, and then were averaged across all participants.