Figures
Scatter plots depicting the inverse relationship between Sensory Organization Test (SOT) composite equilibrium score and disease severity (above) and the direct relationship between Motor Control Test (MCT) average latency and disease severity (below). Severity was based on Movement Disorder Society–Unified Parkinson's Disease Rating Scale.
Study flow diagram. PD=Parkinson disease.
Tables

Convergent Validity of Force Platform Measures With Clinical Gait and Balance Measuresa
↵a Pearson correlation coefficients were calculated for the full sample (N=42). SOT=Sensory Organization Test, LOS=Limits of Stability Test, MCT=Motor Control Test, EPE=endpoint excursion, average amplitude-L=average response amplitude to large perturbations, 10MWT=10-Meter Walk Test, 6MWT=Six-Minute Walk Test, Mini-BESTest=Mini-Balance Evaluation Systems Test, FGA=Functional Gait Assessment.

Test-Retest Reliability and Minimal Detectable Changea
↵a Data were calculated for whole sample (N=42), with the exception of one participant who did not complete the second test session. SOT=Sensory Organization Test, LOS=Limits of Stability Test, MCT=Motor Control Test, EPE=endpoint excursion, ICC=intraclass correlation coefficient, CI=confidence interval, SEM=standard error of measurement, MDC95=minimal detectable change.

Descriptive Statistics of Force Platform, Gait, and Balance Measuresa
↵a SOT=Sensory Organization Test, LOS=Limits of Stability Test, MCT=Motor Control Test, EPE=endpoint excursion, 10MWT=10-Meter Walk Test, 6MWT=Six-Minute Walk Test, Mini-BESTest=Mini-Balance Evaluation Systems Test, FGA=Functional Gait Assessment, Q1=lower quartile, Q3=upper quartile.