Figures
Effect of Parkinson disease (PD) and levodopa replacement on each domain. Participants with PD in the off-levodopa state (PD-OFF group) are represented by the blue dotted line. Participants with PD in the on-levodopa state (PD-ON group) are represented by the light gray arrows, and the control group is represented by the dark gray arrows. Freq=frequency, Asym=asymmetry.
Exploratory factor analysis of 30 measures performed during the Instrumented Stand and Walk Test (ISAW) test in 100 people with Parkinson disease in the off-levodopa state. Six independent domains of gait and balance were identified: sway area, sway frequency (freq), gait speed, gait trunk, gait timing, and arm asymmetry (asym). The percentage of variance explained by each factor and the total variance is given at right, as well as the loading of each measure. RMS=root mean square, CoM=center of mass, Dis=distance, RoM=range of motion, Horiz=horizontal, Acc=acceleration, Vert=vertical, Vel=velocity, ML=mediolateral, AP=anteroposterior, Asym=asymmetrical, SSI=Symbolic Symmetry Index.
Visualization of the covariance structure of the Instrumented Stand and Walk Test (ISAW) measures in participants with Parkinson disease in the off-levodopa state (PD-OFF group). Blue indicates positive, and red indicates negative correlation. Higher color saturation indicates higher correlation. Gait metrics start with G_, turning metrics start with T_, anticipatory postural adjustments metrics start with A_, and postural sway metrics start with S_. RoM=range of motion, Horiz=horizontal, Acc=acceleration, Vert=vertical, Vel=velocity, ML=mediolateral, AP=anteroposterior, Asym=asymmetrical, SSI=Symbolic Symmetry Index, Freq=frequency, CoM=center of mass, RMS=root mean square, Dis=distance.
Correlation between the gait trunk domain and the Postural Instability and Gait Disability (PIGD) subscale (from the Unified Parkinson's Disease Rating Scale [UPDRS] motor subscale) in participants with Parkinson disease.
Tables
Supplementary Data
eTables and eFigure
Files in this Data Supplement:
- eTables and eFigure (PDF) (58 KB) -
This PDF contains the following supplements:
- eTable 1. All Metrics Used in the Study
- eTable 2. Difference in Mobility Factors Between the PDF OFF Group and the PD-ON and Control Groups
- eFigure. Scree Plot of Eigenvalues Used to Determine How Many Factors to Use in Factor Analysis
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