Table 4.

Bias between IMU and OMC systems in the primary plane as determined by Bland–Altman analysis (N = 16).

	Lumbar	Thoracic	Hip
Flexion	−4.9 (9.8)	−0.5 (5.2)	−3.4 (3.6) *
Extension	−1.8 (7.0)	−0.6 (3.1)	1.6 (3.4)
Left Axial Rotation	0.2 (5.2)	7.4 (12.5)	−1.3 (9.0)
Right Axial Rotation	−1.0 (3.4) *	−7.2 (13.4) *	−1.0 (2.9)
Left Side Bend	−1.3 (7.1)	2.2 (9.8)	−1.0 (3.6)
Right Side Bend	2.0 (8.7)	−2.7 (7.0)	−0.7 (3.3)

Values were derived as mean peak IMU ROM – mean peak OMC ROM and are listed as mean (standard deviation), * N = 15.