{
  "abstract": "Introduction Loading intervention is the predominant treatment strategy for tendinopathy and the response may depend on restitution time between loading exposure. We aim to investigate if a 12-week exercise-based rehabilitation regime for patellar tendinopathy is influenced by restitution time and the hypothesis was that longer restitution would yield greater improvements compared to shorter restitution.Methods Fifty-two participants with chronic patellar tendinopathy were randomized to a short restitution group (SR, 3 exercise days/week), or an extended restitution group (ER, 1 exercise day/week), with impact activities restricted in both groups. Function and symptoms (VISA-P), tendon pain during activity (NRS), tendon function (functional tests), and ultrasound (tendon vascularization and swelling) were assessed before and after the intervention. Self-reported improvement and satisfaction with function and treatment were measured at week 12.Results ER was not superior to SR for any of the outcomes. Both groups attained significant clinical improvements in VISA-P score (mean±SEM) (SR-group: 0 weeks, 55.9±2.8; 12 weeks, 68.3±3.1) (ER-group: 0 weeks, 48.8±3.7; 12 weeks, 63.9±3.3) and pain scores and functional improvement in muscular strength. Conversely there were no improvements in jumping height or tendon structure. Moreover, there were no group difference in self-reported improvement or satisfaction with function or treatment.Conclusion There was no superior effect of 1 exercise day/week compared to 3 exercise days/week. Both groups demonstrated equal clinical and muscular strength improvement after 12 weeks without any improvement in structure or jumping performance. No group differences were found in self-reported improvement or satisfaction with function or treatment at week 12.",
  "authors": [
    {
      "affiliations": [
        "Copenhagen University Hospital - Bispebjerg and Frederiksberg, Denmark",
        "University of Copenhagen, Denmark"
      ],
      "name": "Anne-Sofie Agergaard"
    },
    {
      "affiliations": [
        "Copenhagen University Hospital - Bispebjerg and Frederiksberg, Denmark",
        "University of Copenhagen, Denmark",
        "Technical University of Denmark, Denmark"
      ],
      "name": "Rene B Svensson"
    },
    {
      "affiliations": [
        "Copenhagen University Hospital - Bispebjerg and Frederiksberg, Denmark",
        "University of Copenhagen, Denmark"
      ],
      "name": "Rikke Hoeffner"
    },
    {
      "affiliations": [
        "Copenhagen University Hospital - Bispebjerg and Frederiksberg, Denmark",
        "University of Copenhagen, Denmark"
      ],
      "name": "Syed Zahra Gillani"
    },
    {
      "affiliations": [
        "Copenhagen University Hospital - Bispebjerg and Frederiksberg, Denmark",
        "University of Copenhagen, Denmark"
      ],
      "name": "S Peter Magnusson"
    }
  ],
  "title": "5 Extended restitution time does not enhance the benefits of 12-weeks exercise-based treatment for patellar tendinopathy: a randomized controlled clinical trial",
  "uid": "734bd898-cd64-54c0-8011-06df0dc61a0b"
}