Effect of activity-based mirror therapy on lower limb motor-recovery and gait in stroke: A randomised controlled trial

Abstract

Objective: To determine the effect of activity-based mirror therapy (MT) on motor recovery and gait in chronic poststroke hemiparetic subjects. Design: A randomised, controlled, assessor-blinded trial. Setting: Rehabilitation institute. Participants: Thirty-six chronic poststroke (15.89 ± 9.01 months) hemiparetic subjects (age: 46.44 ± 7.89 years, 30 men and functional ambulation classification of median level 3). Interventions: Activity-based MT comprised movements such as ball-rolling, rocker-board, and pedalling. The activities were provided on the less-affected side in front of the mirror while hiding the affected limb. The movement of the less-affected lower limb was projected as over the affected limb. Conventional motor therapy based on neurophysiological approaches was also provided to the experimental group. The control group received only conventional management. Main outcome measures: Brunnstrom recovery stages (BRS), Fugl-Meyer assessment lower extremity (FMA-LE), Rivermead visual gait assessment (RVGA), and 10-metre walk test (10-MWT). Results: Postintervention, the experimental group exhibited significant and favourable changes for FMA-LE (mean difference = 3.29, 95% CI = 1.23-5.35, p = .003) and RVGA (mean difference = 5.41, 95% CI = 1.12-9.71, p = .015) in comparison to the control group. No considerable changes were observed on 10-MWT. Conclusions: Activity-based MT facilitates motor recovery of the lower limb as well as reduces gait deviations among chronic poststroke hemiparetic subjects.

Keywords: Action observation; Ambulation; Cerebrovascular diseases; Mirror Neuron.