Effectiveness of Vestibular Rehabilitation on Post-Concussion dizziness in Adults

Thesis Abstract

Post-concussion dizziness is a prevalent and debilitating symptom experienced by adults following traumatic brain injuries, significantly impairing their functional capacity and quality of life. Despite the common implementation of vestibular rehabilitation (VR) as a therapeutic intervention, there remains limited empirical evidence quantifying its effectiveness specifically for post-concussion dizziness, necessitating rigorous investigation to inform clinical practice. The primary aim of this study is to evaluate the effectiveness of vestibular rehabilitation in reducing dizziness severity and improving functional outcomes among adults with post-concussion symptoms. The specific objectives are to compare pre- and post-intervention dizziness levels, assess changes in balance and gait parameters, and explore patient-reported functional improvements following VR. This research adopts a quasi-experimental pretest-posttest design involving a sample of 100 adult patients diagnosed with post-concussion dizziness attending outpatient physiotherapy clinics in metropolitan health facilities. Participants are recruited through stratified random sampling to ensure representation across age, gender, and injury severity. Data collection utilizes validated instruments including the Dizziness Handicap Inventory (DHI), the Balance Evaluation System Test (BESTest), and the Functional Gait Assessment (FGA). Additionally, qualitative data are collected via semi-structured interviews to capture patient perceptions of functional changes and symptom alleviation. The intervention comprises a structured 8-week VR program based on the Cawthorne and Cooksey model, incorporating exercises targeting vestibulo-ocular reflex adaptation, habituation, and balance retraining. Quantitative data are analyzed using paired t-tests and repeated measures ANOVA to assess within-group changes, with multivariate regression analysis identifying predictors of treatment response. Qualitative data undergo thematic analysis to elucidate patient experiences and contextualize quantitative findings. The study also references the vestibular compensation theory and the neuroplasticity framework to underpin the hypothesized mechanisms of recovery through VR. Anticipated findings suggest significant reductions in dizziness severity scores, with improvements in balance and gait measures post-intervention, supporting the hypothesis that VR has a beneficial effect on post-concussion dizziness. It is expected that greater adherence to the exercise regimen and shorter duration post-injury will predict better outcomes, emphasizing the importance of early and consistent intervention. The qualitative analysis is projected to reveal themes of increased confidence, reduction in dizziness-related anxiety, and enhanced functional independence. The contribution of this research lies in providing robust empirical data on the efficacy of a standardized VR protocol specifically tailored for post-concussion dizziness, thus filling existing gaps in the biomechanical and neuropsychological domains of physiotherapy management. The findings are expected to enhance evidence-based clinical guidelines, supporting physiotherapists in implementing targeted vestibular interventions for this patient population. The study also aims to advance understanding of the individual variability in treatment response, informing personalized rehabilitation approaches. The main conclusion underscores the potential of structured VR programs to mitigate dizziness symptoms and improve functional outcomes in adults post-concussion. Based on the results, the study recommends integrating VR into routine concussion management protocols, emphasizing early intervention. Future research directions include longitudinal studies to assess the long-term sustainability of benefits and comparative analyses of different VR modalities. Overall, this study aims to substantiate the role of vestibular rehabilitation as an effective modality for clinical management of post-concussion dizziness, fostering recovery and advancing physiotherapeutic best practices.