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Intensity of pain, assessed using the WOMAC subscale, at baseline and after 3 days and 1 week of the intervention. Global pain was assessed as the sum of the 5 subitems of the pain subscale from the WOMAC. Panel A, nonparametric variables expressed as median (75th percentile). Panel B, parametric variables expressed as mean (standard error). *P < .05; †P < .01; and ‡P < .001 versus baseline. ¥P < .05 versus 3 days. WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.
