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Impact de la double tâche lors de la marche dans la maladie de Parkinson

Lessage, François
(2024)

Files

Lessage_68881900_2024.pdf
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Details

Supervisors
Crevecoeur, Frédéric
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil biomédical, à finalité spécialisée
Abstract
enQuantifying the progression of Parkinson's disease is challenging. The Hurst exponent has recently helped better understand gait control in Parkinson's patients. This study analyzes the impact of an additional cognitive load on walking using a dual-task protocol, combining walking and counting by 7, with 13 Parkinson's patients and 14 control subjects. Measurements included stride duration and length, response time for counting, percentage of correct answers, and Long Range Autocorrelation (LRA) analysis. As shown in the literature, Parkinson's patients exhibited reduced step length and walking speed in the dual-task condition. A link was also observed between LRA in single-task walking and dual-task walking among the patients, whereas in healthy subjects, LRA, step length, and speed remained stable. Regarding the arithmetic task, the dual-task condition did not significantly impact the percentage of correct answers in either group, but an increase in response time was present in the patients, unlike the healthy subjects who showed this increase only at the beginning of the task. These results suggest that the additional cognitive load impacts walking differently in the two groups. In patients, gait control is affected by the dual-task, indicating a possible modification of gait control reflected by LRA. Healthy subjects, despite a slight increase in stride duration, did not show a significant difference in LRA between tasks, suggesting stability in gait control. Additionally, arithmetic performance improved during the dual-task in healthy subjects, unlike in patients, highlighting that managing two simultaneous tasks is less demanding for healthy subjects. This study confirms that healthy subjects are less affected by the dual-task than Parkinson's patients. New perspectives arise for quantifying Parkinson's disease and understanding gait control. Increasing the number of participants could enhance the robustness of the results and reinforce observed trends.