Contracciones excéntricas y concentricas

Knee Surg Sports Traumatol Arthrosc (2006) 14: 76–81 DOI 10.1007/s00167-004-0611-8

SHOULDER

Per Jonsson ¨ Per Wahlstrom ¨ Lars Ohberg ˚ Hakan Alfredson

Eccentric training in chronic painfulimpingement syndrome of the shoulder: results of a pilot study

Received: 22 March 2004 Accepted: 26 October 2004 Published online: 5 May 2005 Ó Springer-Verlag 2005

P. Jonsson (&) Æ H. AlfredsonDepartment of Surgical and Perioperative Science, ˚ Sports Medicine University of Umea, 90187 Umea, Sweden E-mail: per.jonsson@idrott.umu.se Tel.: +46-90-7853951 Fax: +46-90-135692 P. Wahlstrom ¨Department of Surgical and Perioperative Science, Orthopedic ˚ University of Umea, 90187 Umea, Sweden ¨ L. Ohberg Department of Radiation Science, ˚ Diagnostic Radiology University of Umea, 90187 Umea,Sweden H. Alfredson Department of Musculoskeletal Research, National Institute for Working Life, ˚ University of Umea, 90187 Umea, Sweden

Abstract Treatment with painful eccentric muscle traininghas been demonstrated to give good clinical results in patients with chronic Achilles tendinosis. The pain mechanisms in chronic painful shoulder impingement syndrome have not been scientificallyclarified, but the histological changes found in the supraspinatus tendon have similarities with the findings in Achilles tendinosis. In this pilot study, nine patients (five females and four males, mean age 54years) with a long duration of shoulder pain (mean 41 months), diagnosed as having shoulder impingement syndrome and on the waiting list for surgical treatment (mean 13 months), were included. Patientswith arthrosis in the acromioclavicular joint or with large calcifications causing mechanical impingement during horizontal shoulder abduction were not included. We prospectively studied the effects ofa specially designed painful eccentric training programme for the supraspintus and deltoideus muscles (3·15 reps, 2 times/day, 7 days/ week, for 12 weeks). The patients

evaluated the amount of...