Table 3.

Range of motion (ROM) of the four groups after 12 weeks

Test mode (degrees)	Group 1	Group 2	Group 3	Group 4
Flexion	4.0 ± 0.6	3.5 ± 0.5	3.7 ± 0.6	3.5 ± 0.6
Extension	4.1 ± 0.6	3.7 ± 0.7	3.9 ± 0.5	3.7 ± 0.6
Right rotation	3.6 ± 0.6	2.5 ± 0.7 *	3.4 ± 0.6	3.4 ± 0.7
Left rotation	3.6 ± 0.6	2.4 ± 0.7 *	3.5 ± 0.6	3.5 ± 0.7
Right bending	5.0 ± 0.7	4.7 ± 0.9	5.6 ± 0.8	5.2 ± 0.8
Left bending	5.1 ± 0.8	4.8 ± 1.0	5.8 ± 0.7	5.3 ± 0.9

* P < 0.05 compared with groups 1, 3, and 4