Gait Perturbations to Improve Balance Post-stroke

Inclusion Criteria: * able to walk at a comfortable speed less than 1.0 m/s * have reduced dynamic balance capacities (as evaluated by the mini-BESTest; score below the 95% confidence interval of the mean score of the corresponding age group of normative data) * with or without a history of fall * be able to walk on a treadmill, without external support, such as handrails or walking aid, for at least 1 minute Exclusion Criteria: * hemineglect (more than 6 omissions on the bell cancellation test), * cognitive impairment (Mini-Mental State Examination score under 24/30) * uncorrected visual deficit or pathologies other than stroke which can affect their gait or balance