Fig. 4From: Efficacy of heel lifts versus calf muscle eccentric exercise for mid-portion Achilles tendinopathy (the HEALTHY trial): study protocol for a randomised trialCalf muscle eccentric exercise program. Figures a and b show (a) the start position and (b) end position of the straight-knee exercise. Figures c and d show (c) the start position and (d) end position of the bent-knee exercise. Note the use of a block to aid the contralateral leg in lifting the patientBack to article page