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The "Stroop Walking Task": An innovative dual-task for the early detection of executive function impairment
A Perrochon1, G Kemoun1, E Watelain2
1Laboratoire MObilité, Mouvement et Exercice (MOVE), EA 6314, Université de Poitiers, Poitiers, France; ISIS, Research Institute on Handicap and Aging, Paris, France.
Aims Of The Study:
To evaluate a dual-task named the "Stroop Walking Task", which is similar to the task of making a decision of whether to cross a street based on a pedestrian traffic light.
Patients And Methods:
Fifty-one subjects (15 young adults, 21 subjectively healthy old subjects and 15 old subjects with mild cognitive impairment) had to respond to a visual signal (pictogram) with an appropriate motor response (walk or stop). We used an electronic walkway system to record the gait parameters and performed a cluster analysis on the obtained data.
Results:
This dual-task enables the early detection of executive function impairment with 89% sensitivity and 87% specificity.
Conclusion:
The use of a dual-task that is inspired by an everyday event as an evaluation tool seems to facilitate the detection of ageing subjects' cognitive impairment, which is not detectable with traditional psychometric tests.
