Table 2.
Spatiotemporal Measures
| Spatiotemporal Gait Measures | PD with FOG | PD Controls | p-value | ||
|---|---|---|---|---|---|
| Time to complete (seconds) | |||||
| Single Task TUG time ON | n = 34 | 29.4 (17.8) sec | n = 17 | 20.8 (4.2) sec | 0.056 |
| Single Task TUG time OFF | n = 34 | 64.8 (133.5) sec | |||
| Dual Task TUG time ON | n = 34 | 60.1 (118.0) sec | n = 17 | 23.9 (4.7) sec | 0.214 |
| Dual Task TUG time OFF | n = 33 | 87.2 (121.3) sec | |||
| Velocity (meters/second) | |||||
| Single Task velocity ON | n = 33 | 105.8 (22.7) m/sec | n = 16 | 126.8 (22.2) m/sec | 0.004* |
| Single Task velocity OFF | n = 32 | 89.6 (31.7) m/sec | |||
| Dual Task velocity ON | n = 33 | 87.1 (24.6) m/sec | n = 16 | 110.1 (22.4) m/sec | 0.003* |
| Dual Task velocity OFF | n = 30 | 71.7 (24.6) m/sec | |||
| Cadence | |||||
| Single Task cadence ON | n = 33 | 113.8 (11.2) | n = 16 | 114.3 (6.0) | 0.857 |
| Single Task cadence OFF | n = 32 | 109.4 (17.5) | |||
| Dual Task cadence ON | n = 33 | 107.4 (18.6) | n = 16 | 108.9 (9.3) | 0.761 |
| Dual Task cadence OFF | n = 30 | 108.2 (18.1) | |||
| Step Length (cm) | |||||
| Single Task step length ON | n = 33 | 56.1 (11.8) cm | n = 16 | 66.7 (12.4) cm | 0.006 |
| Single Task step length OFF | n = 32 | 48.1 (15.2) cm | |||
| Dual Task step length ON | n = 33 | 48.6 (12.1) cm | n = 16 | 60.7 (11.3) cm | 0.002* |
| Dual Task step length OFF | n = 30 | 40.1(12.8) cm | |||
| Step Length CV | |||||
| Single Task step length CV ON | n = 32 | 7.7 (11.0) | n = 14 | 4.3 (1.7) | 0.252 |
| Single Task step length CV OFF | n = 31 | 12.5 (19.4) | |||
| Dual Task step length CV ON | n = 32 | 10.5 (15.6) | n = 14 | 4.8 (1.7) | 0.184 |
| Dual Task step length CV OFF | n = 30 | 12.6 (11.8) | |||
Table Abbreviations: Values presented as mean (SD). Uncorrected p-values < 0.05 are in bold, p-values Bonferroni corrected for the number of spatiotemporal comparisons performed (10) are considered significant if p < 0.005 and denoted by *; TUG time up and go, CV Coefficient of variability