Do self-efficacy, body mass index, duration of onset and pain intensity determine performance on selected physical tasks in individuals with unilateral knee osteoarthritis?

To investigate the contributions of Pain Self-Efficacy (PSE), Function Self-Efficacy (FSE), Body Mass Index (BMI), duration of onset of Knee OsteoArthritis (KOA) and Present Pain Intensity (PPI) to performance on Stair Task Test (STT), Timed Up-and-Go (TUG) and 20-Meter Walk Test (20-MWT) and explore correlations among the variables in individuals with unilateral KOA.

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