Comparative Analysis of Aquatic vs. Land-based Physiotherapy for Chronic Lower Back Pain

Thesis Abstract

Chronic lower back pain (CLBP) is a prevalent musculoskeletal disorder that significantly impairs individuals’ functional capacity, quality of life, and economic productivity, representing a substantial burden on healthcare systems globally. Despite the extensive use of physiotherapy interventions, the comparative efficacy of aquatic versus land-based physiotherapy remains inconclusive, necessitating rigorous evidence to inform clinical decision-making and optimize rehabilitation outcomes. This study aims to systematically compare the effectiveness of aquatic physiotherapy (AP) and land-based physiotherapy (LP) in managing CLBP among adults aged 30 to 60 years, with the overarching objective of elucidating which modality offers superior pain reduction, functional improvement, and patient satisfaction. Employing a randomized controlled trial (RCT) design, the study recruited a total of 120 participants from physiotherapy outpatient clinics in a metropolitan setting. Participants were randomly allocated into two groups 60 received aquatic physiotherapy, and 60 underwent land-based physiotherapy, each over a period of 12 weeks with bi-weekly sessions. The inclusion criteria mandated a diagnosis of CLBP persisting for at least three months, with exclusion criteria including recent spinal surgery, neurological deficits, or contraindications to immersion therapy. Data collection employed validated instruments such as the Visual Analog Scale (VAS) for pain intensity, the Oswestry Disability Index (ODI) for functional capacity, and the Patient Satisfaction Scale (PSS). Baseline assessments were conducted prior to intervention, with follow-up evaluations at the conclusion of the program and at three-month post-intervention to measure short-term and medium-term effects. The data analysis integrated descriptive statistics to characterize the sample, while inferential statistics involved repeated-measures ANOVA to examine differences within and between groups across time points, with additional post-hoc testing where appropriate. Effect sizes were computed to assess clinical relevance, and multiple regression analysis explored potential predictors of treatment response, including demographic and baseline variables. The theoretical framework underpinning the study draws upon the Biopsychosocial Model, emphasizing the interaction of physiological, psychological, and social factors in pain perception and rehabilitation, and Schon’s Motor Control Theory to contextualize movement retraining in physiotherapeutic interventions. Expected findings anticipate that both AP and LP will significantly reduce pain and improve functional capacity; however, it is hypothesized that aquatic physiotherapy will demonstrate superior outcomes due to the reduced joint loading, enhanced mobility, and psychological benefits associated with water immersion. Nonetheless, land-based physiotherapy is expected to remain a critical modality, especially for patients with contraindications to aquatic therapy. The study aims to fill existing gaps in the literature by providing high-quality, randomized evidence on comparative effectiveness, utilizing a comprehensive set of outcome measures, and assessing patient satisfaction over an extended follow-up. The contribution to knowledge is substantial, offering empirical data to inform evidence-based physiotherapeutic protocols for CLBP and guiding clinicians in selecting appropriate interventions tailored to individual patient profiles. By elucidating the differential impacts of aquatic and land-based therapy, the research will facilitate more personalized, effective, and cost-efficient treatment strategies. The main conclusion will likely advocate for integrating aquatic physiotherapy as a complementary modality in CLBP management, especially in cases where land-based exercises yield limited benefits. Recommendations will include establishing guidelines for patient selection, optimizing session frequency, and encouraging further longitudinal studies to examine long-term outcomes beyond three months post-intervention. Overall, this study aims to advance clinical practice, enhance therapeutic outcomes, and contribute to the broader understanding of rehabilitation strategies for chronic lower back pain.