title: Description of load progression and pain response during progressive resistance training early after total hip arthroplasty: secondary analyses from a randomized controlled trial.
abstract: OBJECTIVE
  To describe a progressive resistance training intervention implemented shortly after total hip arthroplasty, including a detailed description of load progression, pain response and adverse events to the training.
  
  
  METHODS
  Secondary analyses of data from the intervention group in a randomized controlled trial.
  
  
  METHODS
  This study reports data from the intervention group ( n = 37).
  
  
  METHODS
  The protocol described supervised progressive resistance training of the operated leg two days/week in addition to home-based exercise five days/week and for 10 weeks. The relative load progressed from 12 repetition maximum to 8 repetition maximum during 10 weeks for the exercises: knee extension, hip abduction, -flexion and -extension.
  
  
  METHODS
  Training load in kilograms (kg) for each exercise, hip pain during, before and after exercise using the Visual Analog Scale and adverse events during the initial four weeks of training.
  
  
  RESULTS
  The majority of patients experienced only moderate hip pain during exercise (range in median across exercises and sessions: 5-35 mm Visual Analog Scale) and mild pain at rest (median: 1-18 mm Visual Analog Scale), both of which decreased over time ( p < 0.001), despite a substantial increase in absolute training load (67%-166 % across exercises, p < 0.001). Out of 152 training sessions, short term pain response (an increase >20 mm Visual Analog Scale) occurred in 13 patients in 24 training sessions.
  
  
  CONCLUSIONS
  Progressive resistance training as described in the present study can be implemented shortly following total hip arthroplasty with substantial load progression and no overall exacerbation of postoperative pain. Some patients may experience a short term pain response. Trial Registration (primary trial): NCT01214954.
authors: 1 Elective Surgery Centre, Silkeborg Regional Hospital, Silkeborg, Denmark.
authors: Lone R
authors: LR
authors: Mikkelsen
authors: 2 Department of Physiotherapy and Occupational Therapy, Aarhus University Hospital, Aarhus, Denmark.|3 Centre of Research in Rehabilitation (CORIR), Aarhus University Hospital and Aarhus University, Aarhus, Denmark.
authors: Annemette K
authors: AK
authors: Petersen
authors: 3 Centre of Research in Rehabilitation (CORIR), Aarhus University Hospital and Aarhus University, Aarhus, Denmark.|4 Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, Denmark.
authors: Inger
authors: I
authors: Mechlenburg
authors: 1 Elective Surgery Centre, Silkeborg Regional Hospital, Silkeborg, Denmark.
authors: Søren
authors: S
authors: Mikkelsen
authors: 4 Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, Denmark.
authors: Kjeld
authors: K
authors: Søballe
authors: 5 Physical Medicine & Rehabilitation Research - Copenhagen (PMR-C), Copenhagen University Hospital, Hvidovre, Denmark.|6 Clinical Research Centre, Copenhagen University Hospital, Hvidovre, Denmark.|7 Department of Orthopaedic Surgery, Copenhagen University Hospital, Hvidovre, Denmark.
authors: Thomas
authors: T
authors: Bandholm
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000534:rehabilitation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010147:Pain Measurement; D010149:Postoperative Pain / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control; D016059:Range of Motion, Articular; D055070:Resistance Training / Q000009:adverse effects / Q000379:methods*; D016474:Weight-Bearing / Q000502:physiology
keywords: Hip replacement; pain; physiotherapy; strength training