TABLE 2.
Preliminary gait testing results.
| Gait test | Baseline (mean ± SD) | DBS ON (4 weeks) (mean ± SD) | P-value |
| Timed up and go | 27.6 ± 2.2 s | 15.6 ± 1.7 s | 0.026 |
| CW 360° turn (time) | 27.1 ± 4.1 s | 7.9 ± 1.2 s | 0.024 |
| CW 360° turn (steps) | 21.0 ± 4.4 | 7.7 ± 1.2 | 0.046 |
| CCW 360° turn (time) | 47.4 ± 18.0 s | 12.5 ± 4.4 s | 0.069 |
| CCW 360° turn (steps) | 37.7 ± 11.4 | 11.0 ± 1.7 | 0.041 |
| Gait parameters | |||
| Stride length (m) | 1.04 ± 0.20 | 1.24 ± 0.05 | 1.2 × 10–9 |
| Stride velocity (m/s) | 0.685 ± 0.153 | 0.925 ± 0.079 | 1.5 × 10–14 |
| Gait cycle time (s) | 1.53 ± 0.24 | 1.35 ± 0.11 | 1.6 × 10–6 |
| Gait cycle time variability | 0.155 | 0.082 | |
| Cadence (steps/min) | 80.6 ± 16.3 | 89.5 ± 7.0 | 0.0002 |
| Cadence variability | 0.202 | 0.078 | |
| Swing (%) | 27.0 ± 3.9 | 32.7 ± 1.4 | 4.2 × 10–14 |
| Stance (%) | 73.0 ± 3.9 | 67.3 ± 1.4 | 4.2 × 10–14 |
| Arm RoM (degrees) | 19.1 ± 4.9 | 29.6 ± 6.8 | <2.2 × 10–16 |
| Shank RoM (degrees) | 58.9 ± 10.4 | 66.8 ± 2.4 | <2.2 × 10–16 |
| Turning time (s) | 9.4 ± 3.5 | 3.3 ± 0.5 | 0.0006 |
| Steps per turn | 12.3 ± 4.2 | 5.6 ± 0.7 | 0.001 |
| Phase Coordination Index (%) | 14.9 | 7.95 |
CW, clockwise; CCW, counterclockwise; RoM, range of movement; SD, standard deviation.