Cognitive-motor interference in walking after stroke: test–retest reliability and validity of dual-task walking assessments

Objective: To explore the reliability and validity of a series of dual-task mobility assessments among individuals post-stroke. Design: Observational study with repeated measures. Setting: University laboratory. Participants: Thirty community-dwelling individuals with chronic stroke. Interventions:...

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Bibliographic Details
Published in:Clinical rehabilitation 2019-06, Vol.33 (6), p.1066-1078
Main Authors: Tsang, Charlotte Sau Lan, Chong, Doris Yin Kei, Pang, Marco Yiu Chung
Format: Article
Language:English
Subjects:
Cognition - physiology
Cognitive ability
Cognitive tasks
Disability Evaluation
Female
Humans
Middle Aged
Mobility
Naming
Negotiation
Neuropsychological Tests
Reaction time
Reaction Time - physiology
Reliability
Reproducibility of Results
Shopping
Stroke
Stroke - physiopathology
Stroop task
Task performance
Validity
Walking
Walking - physiology
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Summary:Objective: To explore the reliability and validity of a series of dual-task mobility assessments among individuals post-stroke. Design: Observational study with repeated measures. Setting: University laboratory. Participants: Thirty community-dwelling individuals with chronic stroke. Interventions: Not applicable. Main Measures: Each of the two mobility tasks (1-minute level-ground walking with and without obstacle-negotiation) was performed concurrently with each of the eight cognitive tasks (auditory Stroop test, serial subtraction, shopping list recall and category naming at two difficulty levels). Walking distance and obstacle hitting rate (OHR) indicated dual-task mobility performance. Number of correct responses (NCR) indicated cognitive performance. Reaction time was additionally measured for the auditory Stroop test. Construct validity was examined by correlations between the dual-task assessments. The dual-task assessments were repeated within 7–14 days for test–retest reliability. Results: Excellent test–retest reliability in walking distance and OHR was found (intraclass correlation coefficient, ICC(3,1) = 0.891–0.984, P 
ISSN:0269-2155
1477-0873
DOI:10.1177/0269215519828146