Fig. 3From: A new integrated behavioural intervention for knee osteoarthritis: development and pilot studyMedial hamstring EMG during walking in people with knee OA (blue), in healthy people (green) and in healthy people after instruction to increase trunk flexion by 5° (red). Note how the muscle pattern in the healthy people changes dramatically, becoming similar to the OA pattern, with increased trunk flexion. MVIC refers to maximal voluntary isometric contractionBack to article page