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Motor imagery and executive dysfunction in the older population: Difference between realized and imagined Timed-Up
Lucas Khodabukus1, Alexis Bourgeais2, Mathieu Corvaisier3
1Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, Angers, France; School of Medicine, Health Faculty, University of Angers, Angers, France.
Purpose:
Functional independence and neurocognitive disorders are major issues in geriatric medicine. The Timed-Up and Go (TUG) test has been validated for predicting the risk of serious falls. Motor imagery could be impaired when there is a neurocognitive disorder, notably executive. The aim of this study was to evaluate the association between executive disorders assessed by the Frontal Assessment Battery (FAB) and the difference between imagined and realized TUG.
Methods:
The Gait and Alzheimer Interactions Tracking (GAIT) study is a cross-sectional study. One hundred twenty-three patients aged over 60 were included. For each patient, a FAB, a TUG and an imagined TUG (iTUG) were performed, enabling a delta-TUG to be calculated. The association was studied using univariate and multivariate linear regression models.
Results:
There was a significant association between delta-TUG and FAB score. The delta-TUG was significantly higher (p < 0.001) in subjects with an executive impairment than in subjects without, 62.73 % ± 41.88 vs. 31.40 % ± 33.20, respectively.
Conclusions:
Motor imagery assessment, using iTUG, may provide relevant information related to cognitive-motor processes. This is an area for further research.
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