Table 2 Ranges of principal motion of painless ROM within the 3D space in 97 subjects. Reference values for cluster populations. Annotation: values are presented as mean (standard deviation)
From: Experimental assessment of cervical ranges of motion and compensatory strategies
Cluster 1 | Cluster 2 | Cluster 3 | Total | p | |
|---|---|---|---|---|---|
Population (Female) | 30 (16) | 32 (15) | 35 (24) | 97 (55) | |
Age (y.) | 31.8 ± 9.7 | 27.7 ± 6.8 | 26 ± 4.8 | 28.3 ± 7.5 | 0.002 |
Weight (kg) | 69.9 ± 15.2 | 66.8 ± 11.1 | 63 ± 10.5 | 66.4 ± 12.5 | 0.2 |
Height (cm) | 171.2 ± 9.5 | 172.8 ± 8 | 169.9 ± 8.7 | 171.3 ± 8.7 | ns |
BMI (kg/m2) | 23.7 ± 4.1 | 22.3 ± 2.7 | 21.7 ± 2.6 | 22.5 ± 3.2 | 0.1 |
Flexion (°) | 55.3 ± 9 | 71.2 ± 8.6 | 69.9 ± 10.1 | 65.8 ± 11.6 | < 0.001 |
Extension (°) | −55.7 ± 9.1 | − 63.3 ± 8.8 | −63.3 ± 7.5 | − 61 ± 9.1 | < 0.001 |
Right Rot. (°) | 64.6 ± 7.3 | 75.6 ± 5.2 | 74.1 ± 6 | 71.7 ± 7.8 | < 0.002 |
Left Rot. (°) | −66.9 ± 6.7 | −78.3 ± 6.4 | −77.6 ± 4.4 | −74.5 ± 7.8 | < 0.003 |
Right Incl. (°) | 38.4 ± 6.2 | 49.6 ± 6.4 | 42 ± 5.2 | 43.4 ± 7.5 | ns |
Left Incl. (°) | −40.4 ± 6.2 | −51.4 ± 5.2 | −44.2 ± 4.5 | −45.4 ± 6.9 | ns |
Mean Time Flex/Ext | 362 ± 89.2 | 391.1 ± 68.1 | 393.6 ± 83.4 | 383 ± 81 | ns |
Mean Time Rot | 287.4 ± 64.4 | 314.4 ± 65.4 | 305.9 ± 76.5 | 303 ± 69.5 | ns |
Mean Time Incl. | 282.9 ± 65.4 | 295.9 ± 62.1 | 296.7 ± 77.5 | 292.2 ± 68.6 | ns |