Research Article
Cervical Coupling Motion Characteristics in Healthy People Using a Wireless Inertial Measurement Unit
Table 3
Average angle ratio and maximum angle ratio of coupling motions on the natural test and the neutral test.
| Primary | Coupling | AAR (mean ± SD) | MAR (mean ± SD) | Natural test | Neutral test | Natural test | Neutral test |
| Extension | Lateral bending | | | | | Axial rotations | | | | | Flexion | Lateral bending | | | | | Axial rotations | | | | | Left bending | Extension and flexion | | | | | Axial rotations | | | | | Right bending | Extension and flexion | | | | | Axial rotations | | | | | Left rotation | Extension and flexion | | | | | Lateral bending | | | | | Right rotation | Extension and flexion | | | | | Lateral bending | | | | |
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SD: standard deviation; AAR: average angle ratio; MAR: Maximum angle ratio.
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