Home mirror therapy: a randomized controlled pilot study comparing unimanual and bimanual mirror therapy for improved arm and hand function post-stroke

Abstract

Purpose: To compare home-based unimanual mirror therapy (UMT) and bimanual mirror therapy (BMT) for upper limb recovery in subacute/chronic stroke individuals with moderate-to-severe arm impairment.

Method: Twenty-two participants were randomized into 1 of 3 groups: UMT, BMT or traditional occupational therapy (TOT) home-based programs. The intervention was 6-weeks and consisted of OT 2 days a week, weekly sessions with the research OT, and 30-minutes of the home-based program 5 days a week, according to group allocation. The Action Research Arm Test (ARAT), ABILHAND, Fugl-Meyer Assessment (FMA), grip strength, and Stroke Impact Scale (SIS) were used for outcome measures.

Results: All groups significantly improved over time on all outcome measures and adhered to the prescribed dosage regardless of group (p<0.05). While there were no between-group differences, effect size and 95% confidence interval data suggest a clinical significance in favor of UMT as compared to the other groups.

Conclusions: All participants, regardless of home-based program, adhered to the prescribed dosage and significantly improved over time. Despite no between-group differences, effect size and 95% confidence interval data suggest that UMT may be more beneficial for individuals with moderate-to-severe arm impairment as compared to BMT or TOT. ClinicalTrials.gov: #NCT02780440Implications for RehabilitationHome-based unimanual mirror therapy (UMT), bimanual mirror therapy (BMT), and traditional occupational therapy (TOT), when administered in conjunction with outpatient OT, are helpful for improving upper limb recovery post-stroke.Home-based UMT may be more beneficial than BMT or TOT for improvement in upper limb motor function and activities of daily living of patients with moderate to severe arm impairment post-stroke.

Keywords: Stroke rehabilitation; mirror therapy; occupational therapy; stroke; upper limb.