title: [Eccentric strength training for the rotator cuff tendinopathies with subacromial impingement. Current evidence].
abstract: BACKGROUND
  Rotator cuff tears are the leading cause of pain and functional disability of the shoulder. Conservative treatment is an essential part of their management. Despite the limited evidence, rehabilitation is the mainstay of the treatment for rotator cuff tears associated to impingement syndrome. There are current reports on the utility of strengthening with resistance, particularly by eccentric exercise.
  
  
  OBJECTIVE
  This report aims to present an overview of the efficacy of eccentric exercises in tendinopathies and current evidence of its benefit in rotator cuff tears.
  
  
  RESULTS
  We describe the information available in tendinopathy and analyzed four studies published on eccentric strengthening for rotator cuff tears. There is theoretical evidence about its usefulness in this pathology, but only a controlled clinical trial has been published with data on improvement in strength but not in pain or functionality.
  
  
  CONCLUSIONS
  More studies are needed with better methodological designs in order to generate evidence of their utility and recommendation.
authors.affiliation: División de Rehabilitación Ortopédica, Instituto Nacional de Rehabilitación, México Distrito Federal, México. Electronic address: drisraelmacias@gmail.com.
authors.forename: Salvador Israel
authors.initials: SI
authors.lastname: Macías-Hernández
authors.affiliation: Servicio de Rehabilitación, Antiguo Hospital Civil de Guadalajara, Guadalajara, Jalisco, México.
authors.forename: Luis Enrique
authors.initials: LE
authors.lastname: Pérez-Ramírez
mesh_terms: D018849:Controlled Clinical Trials as Topic; D006801:Humans; D010865:Pilot Projects; D016032:Randomized Controlled Trials as Topic; D020127:Recovery of Function; D055070:Resistance Training / Q000379:methods*; D017006:Rotator Cuff / Q000473:pathology; D000070636:Rotator Cuff Injuries; D012720:Severity of Illness Index; D019534:Shoulder Impingement Syndrome / Q000534:rehabilitation*; D052256:Tendinopathy / Q000534:rehabilitation*; D016896:Treatment Outcome
keywords: Entrenamiento de resistencia; Manguito de los rotadores; Resistance training; Rotator cuff; Tendinopathy; Tendinopatía