Table 5. Posturography results in patients with PSP and controls.
| Eyes open, head straight | Eyes closed, head straight | Eyes open, head inclined 60° | Eyes open, foam-rubber platform | |||||
|---|---|---|---|---|---|---|---|---|
| Patients | Controls | Patients | Controls | Patients | Controls | Patients | Controls | |
| Not analyzable due to high assistance requirement | 0/16 | 0/16 | 0/16 | 0/16 | 1/16 | 0/16 | 4/17 | 2/16 |
| Sway path (total), m/min | 1.4±0.6 | 1.4±0.5 | 1.5±0.8 | 1.6±0.5 | 1.6±0.7 | 1.3±0.5 | 2.0±0.6 | 2.3±1.0 |
| p | 0.669 | 0.341 | 0.129 | 0.233 | ||||
| RMS (total), mm | 9.3±3.7 | 6.9±2.1 | 9.0±3.7 | 6.3±1.9 | 11.4±4.9 | 5.8±2.0 | 20.8±8.5 | 11.4±3.2 |
| p | 0.032* | 0.035* | <0.001* | <0.001* | ||||
| RMS (x), mm | 5.9±3.8 | 3.7±2.0 | 5.0±2.3 | 3.0±1.2 | 6.0±3.8 | 2.7±1.1 | 12.9±5.1 | 6.4±1.8 |
| RMS (y), mm | 7.0±2.4 | 5.6±1.5 | 7.1±3.3 | 5.5±1.8 | 9.7±4.1 | 5.0±2.0 | 15.1±9.4 | 9.4±2.9 |
| RMS (z), mm | 0.01±0.01 | 0.01±0.1 | 0.01±0.01 | 0.01±0.00 | 0.02±0.02 | 0.01±0.00 | 0.03±0.03 | 0.03±0.02 |
Data are n or mean±SD values. Total sway path did not differ significantly between patients and controls. The total RMS was significantly longer in PSP patients, especially during modulation of the somatosensory input when standing on foam-rubber platform.
*Significant difference between patients and controls with p<0.05.
PSP: progressive supranuclear palsy, RMS: root mean square, x: horizontal, y: anteroposterior, z: vertical.