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Updated: May 9, 2025

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease
Published on: July 24, 2019
Discordance Between Balance Ability and Perception and Its Relation to Falls in Parkinson's Disease: A Replication
Jason K Longhurst1, Andrew Hooyman2, Franziska Albrecht3,4,5
1Department of Physical Therapy and Athletic Training, Saint Louis University, Louis, MO, USA.
Background:
Falls are a common challenge for people with Parkinson's disease (PwPD), driven by balance impairments and misaligned perceptions of balance abilities.
Objective:
This study investigated the replicability and generalizability of the relationship between balance ability and perception discordance and fall risk.
Methods:
Using baseline data from 2 clinical trials involving 171 PwPD, discordance was calculated using the Activities Specific Balance Confidence Scale and Timed Up and Go (TUG) or the Mini Balance Evaluation System's Test (MiniBEST).
Results:
Findings supported the replicability of discordance as a predictor of fall risk, with results consistent across measures. While TUG-derived discordance was statistically significant, MiniBEST-derived discordance showed generalizability without statistical inferiority.
Conclusion:
These results emphasize the relevance of balance perception and its misalignment with ability as fall risk predictors.
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