Table 2.
Parameters on CoP displacement in patients with Parkinson’s disease and healthy volunteers.
| PD (n = 110) | healthy volunteers (n = 30) | p-value | |
|---|---|---|---|
| APAs duration (s) | |||
| APA1(s) | 0.56 (0.24) | 0.55 (0.18) | 0.23 |
| APA2a (s) | 0.31 (0.16) | 0.20 (0.08) | 0.003 |
| APA2b (s) | 0.18 (0.07) | 0.14 (0.04) | 0.005 |
| LOC (s) | 0.78 (0.18) | 0.67 (0.13) | 0.003 |
| APAs length (m) | |||
| APA1 (cm) | 2.62 (1.27) | 4.92 (1.49) | <0.0001 |
| APA2a (cm) | 5.18 (2.02) | 6.97 (2.69) | <0.0001 |
| APA2b (cm) | 5.62 (1.68) | 6.24 (1.88) | 0.90 |
| LOC (cm) | 14.55 (1.89) | 15.51 (1.75) | 0.014 |
| APAs velocity (m/s) | |||
| Mediolateral direction (X) | |||
| APA1 (X) (cm/s) | 3.64 (2.19) | 6.64 (3.3) | <0.0001 |
| APA2a (X) (cm/s) | 10.03 (4.55) | 16.1 (6.49) | 0.015 |
| APA2b (X) (cm/s) | 9.36 (5.65) | 12.94 (8.52) | 0.96 |
| LOC (X) (cm/s) | 19.51 (5.49) | 23.71 (5.66) | <0.0001 |
| Anteroposterior direction (Z) | |||
| APA1 (Z) (cm/s) | 4.23 (2.38) | 6.78 (3.67) | 0.001 |
| APA2a (Z) (cm/s) | 16.75 (10.17) | 32.19 (13.46) | <0.0001 |
| APA2b (Z) (cm/s) | 33.62 (11.31) | 46.66 (15.07) | 0.009 |
| LOC (Z) (cm/s) | 2.90 (2.0) | 2.84 (2.39) | 0.89 |
z = Track velocity (m/s) in the segments in the anteroposterior direction; x = Track velocity (m/s) in the segments and in the mediolateral direction.