Research Article
Cervical Coupling Motion Characteristics in Healthy People Using a Wireless Inertial Measurement Unit
Table 2
Maximum angle of coupling motions on the natural test and the neutral test.
| Primary | Coupling | Natural test (°) | Neutral test (°) | Mean ± SD | ICC (95% CI) | Mean ± SD | ICC (95% CI) |
| Extension | Lateral bending | | 0.95 (0.90–0.98) | | 0.97 (0.93–0.99) | Axial rotations | | 0.94 (0.88–0.98) | | 0.83 (0.65–0.94) | Flexion | Lateral bending | | 0.98 (0.97–0.99) | | 0.94 (0.87–0.98) | Axial rotations | | 0.97 (0.94–0.99) | | 0.86 (0.70–0.95) | Left bending | Extension and flexion | | 0.95 (0.90–0.98) | | 0.96 (0.93–0.99) | Axial rotations | | 0.93 (0.85–0.97) | | 0.95 (0.90–0.98) | Right bending | Extension and flexion | | 0.90 (0.78–0.96) | | 0.93 (0.86–0.97) | Axial rotations | | 0.97 (0.94–0.99) | | 0.97 (0.95–0.99) | Left rotation | Lateral bending | | 0.97 (0.94–0.99) | | 0.95 (0.91–0.98) | Extension and flexion | | 0.96 (0.92–0.98) | | 0.94 (0.88–0.98) | Right rotation | Lateral bending | | 0.97 (0.94–0.99) | | 0.96 (0.92–0.99) | Extension and flexion | | 0.97 (0.93–0.99) | | 0.96 (0.91–0.98) |
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SD: standard deviation; ICC: intraclass correlation coefficient; CI: confidence interval.
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