Send to

Choose Destination
Hum Mov Sci. 2018 Apr;58:175-184. doi: 10.1016/j.humov.2018.01.012. Epub 2018 Mar 12.

Cognitive-motor dual-task interference modulates mediolateral dynamic stability during gait in post-stroke individuals.

Author information

Univ. Lyon, Université Claude Bernard Lyon 1, IFSTTAR, UMR_T9406, LBMC, 69622 Lyon, France; School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada.
Willy Taillard Laboratory of Kinesiology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Department of Clinical Neurosciences, Division of Neurology, Geneva University Hospitals, University of Geneva, Geneva, Switzerland; Department of Neurology, Division of Cognitive and Motor Aging, Albert Einstein College of Medicine, Yeshiva University, Bronx, NY, USA.
Division of Neurorehabilitation, Geneva University Hospitals and University of Geneva, Switzerland.
Willy Taillard Laboratory of Kinesiology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland; Univ. Grenoble Alpes, HP2 Laboratory, 38000 Grenoble, France; INSERM, U1042, 38000 Grenoble, France; Pole Thorax et Vaisseaux, Grenoble Alpes University Hospital, Grenoble, France. Electronic address:


Gait asymmetry and dynamic balance impairments observed in post-stroke individuals increase their risk of fall. Moreover, walking while performing a cognitive task (i.e. dual-task) disturbs the control of balance in post-stroke individuals. Here we investigated the mediolateral dynamic stability in twenty-two community-dwelling participants (12 post-strokes and 10 healthy controls) while walking in single-task (normal gait) and four different dual-tasks (cognitive-motor interference). Positions of the extrapolated center of mass and mediolateral widths of both margin of stability and base of support were extracted from 35 marker trajectories. Post-stroke participants presented larger margin of stability and base of support than controls during single-task (both p < 0.01), with a larger margin of stability on the non-paretic side than on the paretic side at ipsilateral foot-strike (p < 0.05). No significant effect of the dual-task was found between groups. In post-stroke participants, dual-task induced slight modification of the mediolateral stability strategy, as the margin of stability was not different between the two limbs at foot-strike, and significantly reduced the performance in every cognitive task. Post-stroke participants increased their dynamic stability in the frontal plane in single-task by extending their base of support and mainly relying on their non-paretic limb. Under cognitive-motor interference (dual-task), post-stroke participants prioritized dynamic stability over cognitive performance to ensure a safe locomotion. Thus, rehabilitation programs should consider both dynamic balance and dual-task training, even at a chronic delay following stroke, to reduce the risk of fall in post-stroke individuals.


Dual-task; Dynamic stability; Gait; Hemiparesis; Stroke

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center