Accuracy of Markerless 3D Motion Capture Evaluation to Differentiate between On/Off Status in Parkinson’s Disease after Deep Brain Stimulation
Table 3
Mean ± SD differences in items between patients in DBS On, DBS Off, and controls.
Extra gait items
value mean difference between groups/pos hoc pairwise comparison that showed significance
Items
DBS Off
DBS On
Controls
Shoulder flexion (°)
R: 164.01 ± 13.41
R: 166.91 ± 20.82
R: 183.43 ± 14.12
NS
L: 160.00±15.23
L: 165.05 ± 16.50
L: 183.48±12.13
0.039/0.038
Shoulder rotation (°)
R: 147.33±18.94
R: 152.60 ± 20.20
R: 184.53±16.91
0.07/0.011
R: 147.33 ± 18.94
R: 152.60±20.20
R: 184.53±16.91
0.07/0.030
L: 141.41 ± 16.76
L: 142.11 ± 19.65
L: 169.93 ± 20.75
NS
Shoulder abduction (°)
R: 147.03 ± 9.56
R: 153.45 ± 13.39
R: 156.93 ± 17.12
NS
L: 148.60 ± 13.71
L: 157.83 ± 15.94
L: 168.06 ± 22.25
NS
Trunk rotation (°)
R: 7.73 ± 2.69
R: 6.25±6.25
R: 16.20±5.72
0.021/0.024
L: 5.36±4.65
L: 9.01 ± 4.96
L: 13.46±4.01
0.025/0.023
Trunk flexion/extension (°)
F: 30.11 ± 7.01
F: 32.11 ± 7.06
F: 44.78 ± 9.89
0.046
E: 27.18 ± 7.04
E: 32.63 ± 18.91
E: 46.15 ± 7.35
0.049
Lunge distance (cm)
R: 62.11 ± 15.62
R: 70.49 ± 22.18
R: 85.11 ± 16.13
NS
L: 58.52 ± 20.48
L: 68.52 ± 22.63
L: 83.15 ± 16.45
NS
Gait items
Cadence (strides/min)
83.33 ± 14.21
90.38 ± 19.84
88.51 ± 4.62
NS
Stride length (cm)
97.28 ± 18.35
105.54 ± 11.66
107.07 ± 13.35
NS
Step length (cm)
R: 50.32 ± 9.65
R: 53.19 ± 7.76
R: 54.02 ± 7.80
NS
L: 47.48 ± 8.90
L: 53.57 ± 4.49
L: 53.47 ± 5.38
NS
Step width (cm)
R: 10.01 ± 3.10
R: 10.08 ± 4.46
R: 10.13 ± 2.75
NS
L: 8.78 ± 2.37
L: 7.76 ± 2.36
L: 8.46 ± 1.74
NS
Gait speed (m/s)
0.68 ± 0.24
0.81 ± 0.25
0.81 ± 0.09
NS
DBS, deep brain stimulation; NS, not significant; R, right; L, left; F, flexion; E, extension. For right shoulder rotation, results are shown twice due to a double pairwise significant result.
