Table 2. Validity between Veloflex and CROM to measure the cervical range of motion.

Cervical movement	Mean CROM (SD)	Mean veloflex (SD)	Pearson coefficient	LoA− (%)	LoA+ (%)	Mean difference (%)	SD difference (%)
Flexion	61.17° (8.60°)	61.35° (8.78°)	0.993	−1.83° (2.99%)	2.18° (3.56%)	0.17° (0.27%)	1.02° (1.66%)
Extension	61.22° (10.70°)	61.38° (10.7°)	0.998	−1.26° (2.05%)	1.60° (2.61%)	0.17° (0.27%)	0.73° (1.19%)
Right side bending	40.40° (11.01°)	40.56° (11.20°)	0.995	−2.02° (5%)	2.34° (5.79%)	0.16° (0.39%)	1.11° (2.74%)
Left side bending	40.63° (8.85°)	40.46° (8.90°)	0.993	−2.30° (5.66%)	1.96° (4.82%)	−0.17° (0.41%)	1.09° (2.68%)
Right rotation	74.30° (8.53°)	73.33° (7.51°)	0.974	−1.90° (2.55%)	2.15° (2.89%)	−0.96° (1.29%)	2.10° (2.82%)
Left rotation	75.49° (7.57°)	74.24° (7.24°)	0.960	−1.15° (1.52%)	1.43° (1.89%)	−1.24° (1.64%)	2.19° (2.90%)

Note:

SD, standard deviation; LoA, limit of agreement