Design and evaluation of a virtual reality program for stroke rehabilitation

Thesis Abstract

Stroke remains a leading cause of long-term disability worldwide, with traditional rehabilitation approaches often constrained by limited engagement, accessibility issues, and resource-intensive protocols. In response, virtual reality (VR) has emerged as a promising intervention to enhance motor recovery and rehabilitative adherence among stroke survivors. This study aims to design and evaluate a tailored VR-based rehabilitation program specifically targeting upper limb function recovery in post-stroke patients. The primary objectives include assessing the program's usability, therapeutic effectiveness, and impact on patients’ motivation and engagement throughout the rehabilitation process. Employing a mixed-methods research design, the study integrates quantitative and qualitative approaches to provide a comprehensive evaluation of the intervention. The quantitative component follows a randomized controlled trial (RCT) involving 80 post-stroke patients within six months of onset, recruited from two tertiary rehabilitation centers. Participants are randomly allocated into an experimental group receiving the VR intervention alongside conventional therapy, and a control group receiving only standard therapy. Data collection instruments include the Fugl-Meyer Assessment for upper extremity function, the Stroke Rehabilitation Motivation Scale, and usability questionnaires such as the System Usability Scale (SUS). Qualitative data are gathered through semi-structured interviews to explore user experiences and perceived barriers or facilitators. Data validity and reliability are ensured through pilot testing and expert review of instruments. Quantitative data are analyzed using descriptive statistics, paired and independent t-tests, and repeated measures ANOVA to examine changes in motor function and motivation scores over time. The effectiveness of the VR program is further evaluated through effect size calculations and regression analysis to identify predictors of rehabilitation outcomes. Qualitative data are subjected to thematic analysis, guided by the Activity Theory framework, to explore user perceptions and contextual factors influencing VR usability and engagement. Ethical approval is secured from relevant institutional review boards, and informed consent is obtained from all participants to uphold ethical standards. The expected findings of this research anticipate significant improvements in upper limb motor function among the experimental group, with effect sizes indicating clinical relevance. Additionally, the VR program is projected to enhance motivation and engagement, facilitated by immersive and interactive features that promote repetitive practice in a motivating environment. The thematic analysis is expected to reveal critical factors impacting user acceptance and integration into routine rehabilitation, thereby informing future design enhancements. The results will demonstrate the potential of VR technology to augment traditional stroke rehabilitation, providing empirical evidence for its efficacy, usability, and acceptability. This thesis contributes to the field of medical rehabilitation by providing a rigorously evaluated, patient-centered VR intervention tailored for stroke recovery, filling existing gaps regarding technological usability and therapeutic efficacy. It advances knowledge on integrating immersive digital platforms into clinical practice, emphasizing the importance of user experience in technology-driven health interventions. Furthermore, the findings offer actionable insights for clinicians, developers, and policymakers seeking to incorporate VR solutions into comprehensive stroke rehabilitation programs. The study concludes that a well-designed VR rehabilitation program is a viable, effective, and engaging adjunct to conventional therapy, with implications for improving long-term functional outcomes. Recommendations include developing scalable VR modules adaptable across diverse healthcare settings, promoting multidisciplinary collaboration in VR design, and conducting longitudinal studies to assess sustained benefits. Future research should explore the integration of sensory feedback and adaptive algorithms to enhance personalization and efficacy. Overall, this research underscores the transformative potential of virtual reality in enhancing stroke rehabilitation outcomes and optimizing patient-centered care strategies.