Effect of Combined Visual Biofeedback and Metronome on Gait Reciprocity in Patients with Ischemic Stroke: A Pilot Study

Background. Visual biofeedback (BF) and rhythmic metronome stimulation (RMS) are used for correction of stroke gait. To determine the feasibility of improving gait reciprocity using BF technology combined with RMS. Methods. Patients with subacute stroke in the Main group (n20 patients) underwent a course of BF training targeting the reciprocity parameter by RMS (9 sessions) plus standard rehabilitation. The Control group (n = 20) received standard rehabilitation only. Biomechanical gait analysis covering spatiotemporal, kinematic, and EMG parameters, as well as clinical scale assessments, was performed before and after the rehabilitation. Results. At baseline and at the end of rehabilitation, the Main group showed a functionally more severe condition on the DGI and TUG scales (p < 0.05). Both groups displayed a typical picture of hemiparetic gait with asymmetry of biomechanical, kinematic, and EMG parameters. By the end of rehabilitation, the Main group showed a positive trend in the reciprocity parameter that did not reach statistical significance. In the Control group, no changes in the parameter were observed. Conclusions. A short-term (9-session) course of BF training did not produce a statistically significant improvement in the reciprocity parameter and requires confirmation in a powered randomized trial.