Patellar Tendinopathy - The Effect of Load Magnitude in Exercise-based Treatment

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

44 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-03-29

Study Completion Date

2021-10-01

Brief Summary

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The purpose of this project is to investigate if the magnitude of a loading based 12 weeks rehabilitation regime for patellar tendinopathy influence the clinical outcome, tendon structure and function.

The investigators hypothesize that a greater magnitude (90% of 1RM) of loading will yield a more positive clinical outcome, tendon structure and function in patients with patellar tendinopathy compared to a lower magnitude of loading (55% of 1 RM) when total exercise volume is equal in both groups.

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Detailed Description

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Randomized controlled intervention study with one year follow-up

Conditions

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Patellar Tendinopathy Jumper's Knee

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Heavy slow resistance group

Heavy slow resistance training. Three times weekly for 12 weeks.

Group Type ACTIVE_COMPARATOR

Heavy slow resistance training

Intervention Type OTHER

Resistance training for knee extensors. The exercise will be performed at 90% of 1 RM and slowly (6 s/repetition).

Moderate slow resistance group

Moderate slow resistance training. Three times weekly for 12 weeks.

Group Type EXPERIMENTAL

Moderate slow resistance training

Intervention Type OTHER

Resistance training for knee extensors. The exercise will be performed at 55% of 1 RM and slowly (6 s/repetition).

Interventions

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Heavy slow resistance training

Resistance training for knee extensors. The exercise will be performed at 90% of 1 RM and slowly (6 s/repetition).

Intervention Type OTHER

Moderate slow resistance training

Resistance training for knee extensors. The exercise will be performed at 55% of 1 RM and slowly (6 s/repetition).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Uni- or bilateral patellar tendinopathy
* Symptoms \> 3 months
* Ultrasonographical tendon swelling
* Ultrasonographical hypo-echoic area with doppler
* BMI 18.5-30

Exclusion Criteria

* Patellar tendinopathy \> 12 month
* Previous knee surgery
* Confounding diagnosis to the knee joint
* Diabetes or arthritis
* Previous corticosteroid injection for patellar tendinopathy
* Smoking
* Being elite volleyball players

Minimum Eligible Age

20 Years

Maximum Eligible Age

45 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No