A tailor made exercise program versus a standard exercise program in patients with chronic mid portion achillestendinopathy

INTERVENTION: 1. tailor made, slowly progressive exercise program, guided by clincal parameters 2. standard eccentric exercise program; CONDITION: Achilles tendinopathy, Exercise therapy ; ; PRIMARY OUTCOME: Patient satisfaction; ; Functional outcome (VISA‐A) SECONDARY OUTCOME: Pain relief after exercise during the first 4 weeks ; ; Achievement of the treatment goal (defined by the patient) ; ; Compliance ; ; Patient Satisfaction INCLUSION CRITERIA: Age 18 years or older; Clinical diagnosis (based on history and physical examination) of midportion Achillestendinopathy (the 2‐7 cm proximal to the insertion on the calcaneus); Duration of symptoms 3 months or more