Accuracy of Markerless 3D Motion Capture Evaluation to Differentiate between On/Off Status in Parkinson’s Disease after Deep Brain Stimulation
Table 4
Statistically significant correlations between UPDRS-III and BME.
BME (UPDRS-III)
DBS Off
DBS On
SCC
value
SCC
value
Right shoulder flexion (UPDRS-III score)
−0.829
0.042
−0.486
NS
Right maximal abduction (UPDRS-III score)
−0.829
0.042
−0.029
NS
Right maximal abduction (upper limb rigidity)
−0.833
0.021
−0.169
NS
Bilateral squat depth (body bradykinesia)
−0.926
0.008
−0.676
NS
Bilateral squat depth (gait)
−0.926
0.008
−0.676
NS
Stride length (gait)
−0.833
0.039
−0.338
NS
Right step length (gait)
−0.926
0.008
−0.338
NS
Right step width (gait)
0.926
0.008
0.257
NS
Left step width (gait)
0.926
0.008
−0.167
NS
Cadence (arising from a chair)
−0.878
0.021
−0.676
NS
Stride length (arising from a chair)
−0.878
0.021
NA
NS
Gait speed (arising from a chair)
−0.878
0.021
NA
NS
Right trunk rotation (UPDRS-III score)
−0.086
NS
−0.928
0.008
Left trunk rotation (UPDRS-III score)
−0.257
NS
−0.829
0.048
Lunge distance, both sides (body bradykinesia)
−0.741
NS
−0.845
0.034
Lunge distance, both sides (gait)
−0.741
NS
−0.845
0.034
Cadence (posture)
−0.516
NS
−0.926
0.008
Gait speed (posture)
−0.638
NS
−0.926
0.008
Stride length (posture)
−0.577
NS
−0.833
0.039
Right step length (posture)
−0.395
NS
−0.833
0.039
Left step length (posture)
−0.698
NS
−0.833
0.039
Right shoulder flexion (UPDRS-III score)
−0.829
0.042
−0.486
NS
Right maximal abduction (UPDRS-III score)
−0.829
0.042
−0.029
NS
Right maximal abduction (upper limb rigidity)
−0.833
0.021
−0.169
NS
Two-leg squat displacement (body bradykinesia)
−0.926
0.008
−0.676
NS
Two-leg squat displacement (gait)
−0.926
0.008
−0.676
NS
Stride length (gait)
−0.833
0.039
−0.338
NS
Right step length (gait)
−0.926
0.008
−0.338
NS
Right step width (gait)
0.926
0.008
0.257
NS
Left step width (gait)
0.926
0.008
−0.167
NS
Cadence (rising from a chair)
−0.878
0.021
−0.676
NS
Stride length (rising from a chair)
−0.878
0.021
NA
NS
Gait speed (rising from a chair)
−0.878
0.021
NA
NS
Right trunk rotation (UPDRS-III score)
−0.086
NS
−0.928
0.008
Left trunk rotation (UPDRS-III score)
−0.257
NS
−0.829
0.048
Lunge displacement, both sides (body bradykinesia)
−0.741
NS
−0.845
0.034
Lunge displacement, both sides (gait)
−0.741
NS
−0.845
0.034
Cadence (posture)
−0.516
NS
−0.926
0.008
Gait speed (posture)
−0.638
NS
−0.926
0.008
Stride length (posture)
−0.577
NS
−0.833
0.039
Right step length (posture)
−0.395
NS
−0.833
0.039
Left step length (posture)
−0.698
NS
−0.833
0.039
Corresponding items to UPDRS-III. BME, body motion evaluation; DBS, deep brain stimulation; NA, not applicable because all data on “rising from a chair” were 0 in the On state; NS, not significant; SCC, Spearman correlation coefficient; UPDRS-III, Unified Parkinson’s Disease Rating Scale.
