Fig. 2From: Randomized, double-blind, four-arm pilot study on the effects of chicken essence and type II collagen hydrolysate on joint, bone, and muscle functionsMean change in outcomes at visits. a Total WOMAC score; b VAS pain score. Abbreviations: EC, Essence of Chicken; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index; VAS, visual analogue scaleBack to article page