Table 1.
Summary of lumbo-pelvic kinematic parameters assessed
| Measurement Units | |
|---|---|
| Standing flexion kinematic parameters | |
| Trunk angular inclination at T12 (upper motion sensor) | Degrees |
| Pelvic angular inclination at S2 (lower motion sensor | Degrees |
| Lumbar range of motion (difference between T12 and S2 sensors) | Degrees |
| Lumbo-pelvic coordination (rhythm) – peak angle, lumbar percentage | Percentage |
| Lumbo-pelvic coordination (rhythm) – across all movement, lumbar percentage | Percentage |
| Flexion relaxation response | Ratio |
| Delay (lag) of pelvic or lumbar movement at onset | Time (seconds) |
| Delay (lag) of pelvic or lumbar movement at 20o of angular inclination | Time (seconds) |
| Delay (lag) of pelvic or lumbar movement at 30o of angular inclination | Time (seconds) |
| Delay (lag) of pelvic or lumbar movement at 40o of angular inclination | Time (seconds) |
| Duration of flexion movement (from standing to full flexion) | Time (seconds) |
| Sitting kinematic parameters | |
| Sitting pelvic tilt angular inclination range at S2 | Degrees |
| Pelvic tilt ratio (maximum S2 movement/maximum T12 movement) | ratio |
| ‘Relative’ lumbar ROM in sitting | Degrees |