Tailored circuit training and an educational programme reduce pain sensitivity in patients with knee osteoarthritis: A feasibility study

Objective: The primary objective of this study was to evaluate the feasibility of tailored circuit training associated with patient education versus patient education alone in individuals with knee osteoarthritis. Design: randomised controlled parallel-group feasibility study. Setting: one centre. Participants: 30 participants with a clinical diagnosis of knee osteoarthritis and a primary symptom of knee pain (≥4). Interventions: The participants were randomly allocated to two groups for the 14-week intervention. The experimental group performed exercises three times a week and had an individualised progression of exercise duration and intensity. Both groups participated in an educational programme with health professionals. Main measures: feasibility and acceptability rates. Physical performance tests, muscle strength, quantitative sensory testing, and self-administered questionnaires were used to assess the impact of the interventions. Results: The rates of recruitment (2.73 participants/week), eligibility (31.50%), long-term retention (80% at 14 weeks and 73% at 26 weeks), and adherence to educational sessions (80% attended most lectures) were adequate, whereas the adherence to the exercise programme (60% completion of exercise sessions) was partially adequate. Acceptability and perceived usefulness were high in both groups, and the main barriers were related to accessing programmes via the Internet. Changes in physical performance tests, muscle strength, quantitative sensory testing, and self-administered questionnaires for both groups have been reported. Conclusion: This study demonstrated good feasibility and acceptability rates. The results will guide strategies to improve adherence and retention in clinical trials.