1. Differential effects and discriminative validity of motor and cognitive tasks varying in difficulty on cognitive–motor interference in persons with multiple sclerosis
- Author
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Fanny Van Geel, Päivi Hämäläinen, Peter Feys, Karin Coninx, Alon Kalron, Mieke D'hooge, Joke Raats, Ilse Baert, Bart Van Wijmeersch, Xavier Giffroy, Renee Veldkamp, Andrea Tacchino, VELDKAMP, Renee, Kalron, Alon, BAERT, Ilse, Hamalainen, Paivi, Tacchino, Andrea, D'HOOGE, Mieke, GIFFROY, Xavier, VAN GEEL, Fanny, RAATS, Joke, CONINX, Karin, VAN WIJMEERSCH, Bart, and FEYS, Peter
- Subjects
030506 rehabilitation ,Elementary cognitive task ,Computer science ,discriminative validity ,Interference (wave propagation) ,Task (project management) ,Multiple sclerosis ,walking ,03 medical and health sciences ,Cognition ,0302 clinical medicine ,Discriminative model ,Task Performance and Analysis ,cognitive-motor interference ,dual tasking ,task effects ,medicine ,Humans ,Gait ,Cognitive motor interference ,medicine.disease ,Differential effects ,Neurology ,Neurology (clinical) ,0305 other medical science ,030217 neurology & neurosurgery ,Cognitive psychology ,Dual tasking - Abstract
Background: Cognitive–motor interference (CMI) has been well recognized in persons with multiple sclerosis (pwMS); however, there are limited data on effects of task difficulty. Objective: Examine (1) the effects of motor and cognitive tasks varying in difficulty on the magnitude of CMI and (2) the discriminative validity of CMI between pwMS and healthy controls (HC). Methods: Nine cognitive–motor dual-task (DT) conditions (combinations of three cognitive and three walking tasks) were examined. Outcome measures were DT-performance and dual-task cost (DTC) of gait parameters and correct answers. Task differences and overall group-effects were analysed by mixed model analysis, plus the Wilcoxon signed-rank tests or multivariate analysis of variances (MANOVAs), respectively. Results: Task effects were examined in 82 pwMS (Expanded Disability Status Scale (EDSS): 3.3 ± 1.0) and discriminative validity in a subsample (35 pwMS and 33 HC). Motor-DTC and DT-performance were affected by difficulty of both the cognitive task ( p Conclusion: CMI, and especially motor performance, is affected by difficulty of the DT. Although pwMS performed worse on the tasks than HC, none of the DT-conditions showed a discriminative DTC.
- Published
- 2021