(A) | Normal values | Case 1 (PSP01) | Case 4 (PSP08) | ||||
---|---|---|---|---|---|---|---|
(10°–90° percentile) | Basal | 6-month | 12-month | Basal | 6-month | 12-month | |
Standing | |||||||
Ellipse area (mm2) %BA | 0.06–0.66 | 0.08 | 0.33 | 0.18 | 0.34 | 0.55 | 0.18 |
Ellipse eccentricity | 0.62–0.97 | 0.97 | 0.92 | 0.8 | 0.98 | 0.99 | 0.80 |
Axis length AP avg. (mm) %FL | 0.20–8.86 | 3.05 | 4.21 | 3.35 | 9.27a | 3.73 | 3.35 |
Axis length ML avg. (mm) %FL | 0.12–3.66 | 2.37 | 2.35 | 1.21 | 0.12 | 1.54 | 1.21 |
Sway path (CoP) velocity avg. (mm/s) | 6.5–18.11 | 7.26 | 7.62 | 6.57 | 9.41 | 19.43 | 6.58 |
Gait initiation | |||||||
Imbalance phase | |||||||
 Duration (s) | 0.29–0.53 | 0.61a | 0.84a | 0.49 | 0.36 | 0.43 | 0.36 |
 AP avg. (mm) %FL | 9.58–17.26 | 0.86a | 2.14a | 1.04a | 4.48a | 1.73a | 0.32a |
 AP vel. avg. (mm/s) | 58.83–112.61 | 3.32a | 13.68a | 2.78a | 22.33a | 8.31a | 1.01a |
 ML avg. (mm) %FL | 4.6–19.21 | 5.13 | 6.61 | 3.55a | 4.12a | 3.18a | 3.78a |
 ML vel. avg. (mm/s) | 32.15–144.77 | 17.55a | 43.53 | 23.1 | 24.78a | 15.71a | 27.22a |
 Sway path (CoP) velocity avg. (mm/s) | 96.34–178.07 | 19.38a | 46.99a | 26.25a | 36.17a | 29.45a | 28.74a |
 Sway path (CoP) length (mm) | 36.73–63.60 | 14.29a | 18.75a | 11.69a | 16.04a | 11.12a | 10.35a |
Unloading phase | |||||||
 Duration (s) | 0.23–0.47 | 1.45a | 0.83a | 1.29a | 1.09a | 0.76a | 1.36a |
 AP avg. (mm) %FL | 3.9–14.44 | 7.94 | 8.73 | 8.79 | 11.48 | 12.28 | 8.21 |
 AP vel. avg. (mm/s) | 7.1–92.4 | 11.31 | 61.16 | 14.38 | 19.00a | 37.42 | 10.71 |
 ML avg. (mm) %FL | 29.15–61.84 | 33.1 | 43.08 | 36.68 | 54.34 | 45.05 | 37.47 |
 ML vel. avg. (mm/s) | 265.14–481.64 | 78.31a | 143.24a | 85.81a | 150.63a | 151.28a | 85.31a |
 Sway path (CoP) velocity avg. (mm/s) | 269.18–510.98 | 108.73a | 150.99a | 95.58a | 160.86a | 163.10a | 95.63a |
 Sway path (CoP) length (mm) | 79.6–169.24 | 99.07 | 119.54 | 111.61 | 138.33 | 113.69 | 115.61 |
Step phase | |||||||
 First step peak velocity (mm/s) | 1475.4–1874.1 | 486.52a | 783.05a | 604.83a | 714.70a | 498.68a | 566.64a |
 First step length (%BH) | 26.27–33.63 | 21.04a | 24.44a | 17.08a | 14.34a | 8.21a | 16.92a |
(B) | Normal values | Case 3 (PSP06) | Case 5 (PSP09) |
---|---|---|---|
(10°–90° percentile) | Basal | Basal | |
Standing | |||
Ellipse area (mm2) %BA | 0.06–0.66 | 0.49 | 329.68a |
Ellipse eccentricity | 0.62–0.97 | 0.98 | 0.91 |
Axis length AP avg. (mm) %FL | 0.20–8.86 | 6.78 | 5.16 |
Axis length ML avg. (mm) %FL | 0.12–3.66 | 4.31a | 4.13a |
Sway path (CoP) velocity avg. (mm/s) | 6.5–18.11 | 133.81a | 12.69 |
Gait initiation | |||
Imbalance phase | |||
 Duration (s) | 0.29–0.53 | ne | 0.77a |
 AP avg. (mm) %FL | 9.58–17.26 | ne | 6.01 |
 AP vel. avg. (mm/s) | 58.83–112.61 | ne | 16.70a |
 ML avg. (mm) %FL | 4.6–19.21 | ne | 5.15 |
 ML vel. avg. (mm/s) | 32.15–144.77 | ne | 20.02a |
 Sway path (CoP) velocity avg. (mm/s) | 96.34–178.07 | ne | 31.29a |
 Sway path (CoP) length (mm) | 36.73–63.60 | ne | 22.06a |
Unloading phase | |||
 Duration (s) | 0.23–0.47 | ne | 1.00a |
 AP avg. (mm) %FL | 3.9–14.44 | ne | 5.63 |
 AP vel. avg. (mm/s) | 7.1–92.4 | ne | 8.63 |
 ML avg. (mm) %FL | 29.15–61.84 | ne | 54.85 |
 ML vel. avg. (mm/s) | 265.14–481.64 | ne | 129.37a |
 Sway path (CoP) velocity avg. (mm/s) | 269.18–510.98 | ne | 132.25a |
 Sway path (CoP) length (mm) | 79.6–169.24 | ne | 129.71 |
Step Phase | |||
 First step peak velocity (mm/s) | 1475.4–1874.1 | ne | 596.99a |
 First step length (%BH) | 26.27–33.63 | ne | 12.78a |