Resistance training for knee extensors: The exercise will be started at 60% of 1 repetition maximum (RM) and progressed to 75% of 1 RM during the first 3 weeks and maintained throughout the intervention period. The exercise will be performed slowly (6 s/ repetition).
Study summary
The purpose of the present project is to investigate if the restitution time from loading in an exercise-based 12 weeks rehabilitation regime for patellar tendinopathy influences the clinical outcome, tendon structure and function.
The investigators hypothesize that greater restitution from loading (1 exercise day per week) will yield a greater positive clinical outcome, and tissue structure and function in patients with patellar tendinopathy compared to less restitution (3 exercise days per week), when impact activities are restricted in both groups.
Eligibility
Sex
ALL
Min age
18 Years
Max age
60 Years
Healthy volunteers
No
Inclusion Criteria:
* Sports active men and women.
* Age (18-60) years old.
* BMI (18.5-30)
* Understand and read Danish
* Uni- or bilateral patellar tendinopathy
* Symptom onset \>90 days ago
Exclusion Criteria:
* Patellar tendinopathy longer than 24 months
* Smoking
* Previous surgery in the knee on the ipsilateral side.
* Corticosteroid injection in the patellar tendon on the ipsilateral side within the last 6 months.
* Any confounding diagnosis to the knee joint
* Known arthritis
* Known diabetes
* Inability to follow rehabilitation or complete follow-ups
* Enrolled in a resistance based-rehabilitation program for the affected patellar tendon within the previous three month
* Have a work were it is not feasible to avoid pain provoking tasks
Extra criteria sub-study one
Inclusion criteria:
• Five patients from the main study, rating "improved" and "not improved" respectively, will be invited to participate in sub-study one.
Exclusion criteria:
* Claustrophobia
* Pregnancy
* Breastfeeding
Extra criteria sub-study two:
Inclusion criteria:
* Patients from the main study, that rate themselves 'not improved' in symptoms after 12 week.
* Patients who have not achieved Patient Acceptable Symptom State (PASS) after week 20, 24, 28, 32, 36 and 40, will be invited to participate in sub- study two.
Exclusion criteria:
* Pregnancy
* Breastfeeding
* Previously had an allergic reaction for steroid (Depomedrol).
* Previously had an allergic reaction for local anesthesia treatment.
Primary outcome measure(s)
Patient perception VISA-P — Change from baseline at week 12 Change in Victorian Institute of Sports Assessment - patella (VISA-P) total score. The VISA-P asses symptoms, function and the ability to participate in sport. It consists of 8 questions, with a maximum score of 100 indicating the person is asymptomatic and fully per-forming and lower scores indicating more symptoms and limitations of function and activity.
Trial sites (1)
Facility
City
Region
Status
Department of Physical & Occupational Therapy/ Institute of Sports Medicine, Bispebjerg Hospital
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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