Do physical tests have a prognostic value in chronic midportion Achilles tendinopathy?

To determine whether baseline physical tests have a prognostic value on patient-reported outcomes in Achilles tendinopathy. Prospective cohort study, secondary analysis of data from a randomized trial. Patients with chronic midportion Achilles tendinopathy performed a progressive calf muscle exercise program. At baseline and after 2, 6, 12 and 24 weeks, patients completed the Victorian Institute of Sports Assessment—Achilles questionnaire and performed the following physical tests: ankle dorsiflexion range of motion with a bent knee or an extended knee, calf muscle strength, jumping height and pain on palpation (Visual Analogue Scale; 0–100) and after 10 hops (Visual Analogue Scale-10-hops). Associations between baseline test results and improvement (Victorian Institute of Sports Assessment—Achilles scores) were determined using a Mixed Linear Model. 80 patients were included. The mean Victorian Institute of Sports Assessment—Achilles score improved 20 points (95 % confidence interval, 16–25, P