Effects of Resistance Training on Patellar Tendon Properties in People With Patellar Tendinoapthy
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Eccentric Training, Heavy-Slow Resistance Training.
- Who it may be relevant to
- Registry conditions: Patellar Tendinopathy. Basic parameters: 18 years — 50 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Austria
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Chronic Effects of Eccentric Training and Heavy-Slow Resistance Training on the Structural, Morphological, Mechanical, and Functional Properties of Muscle and Tendon in Participants With Patellar Tendinopathy
Overview
This study aims to investigate the effects of two different resistance training interventions on the structural, morphological, mechanical, and functional properties of the thigh muscles (in particular the quadriceps femoris) and the patellar tendon, in participants with current patellar tendinopathy.
Detailed description
Patellar tendinopathy is a common musculoskeletal injury among physically active people and athletes, particularly those who play sports that involve high jumps, such as volleyball and basketball. This condition is associated with alterations in the intrinsic properties of the muscle (e.g., cross-sectional area, muscle length) and the patellar tendon (e.g., stiffness, thickness), along with impairments in sports performance (e.g., altered jump height) and tendon pain.
The current gold-standard treatment for tendinopathies is composed mainly of eccentric training, which overall shows a good percentage of remission of the symptoms, but on the other hand, a high percentage of recurrence of said symptoms.
The objectives are to find out if a specific and controlled eccentric training and heavy-slow resistance training, which literature has shown to be a friendly and closer to daily-life movement alternative for management of patellar tendinopathy. Through the assessment of several muscle, tendon, and performance parameters, our study aims to investigate if individually targeted training variables on both training interventions show a better improvement in the intrinsic properties of the anatomical structures, as well as functional and performance parameters like pain level, strength, jump height, etc.
Interventions
- Other Eccentric Training
The intervention consists of 12 weeks of resistance training, with a frequency of three times per week. Participants in this group will perform two exercises on a leg press and knee extension machine at their own training facility. This intervention has a repetition time of four seconds, with only the eccentric phase of the movement being performed. They will rest between two and three minutes between sets and will perform the exercises as long as their pain level is less than or equal to four o - Other Heavy-Slow Resistance Training
The intervention consists of 12 weeks of resistance training, with a frequency of three times per week. Participants in this group will perform two exercises on a leg press and knee extension machine at their own training facility. This intervention has a repetition time of four seconds, of which two seconds will be spent on the concentric phase and two seconds on the eccentric phase of the movement being performed. They will rest between two and three minutes between sets and will perform the e
Primary outcome measures
- Tendon Thickness [Time frame: From enrollment to the end of training at 12 weeks]
- Tendon sitffness [Time frame: From enrollment to the end of training at 12 weeks]
- Tendon CSA [Time frame: From enrollment to the end of training at 12 weeks]
- Fascicle length [Time frame: From enrollment to the end of training at 12 weeks]
- Muscle Strength [Time frame: From enrollment to the end of training at 12 weeks]
- 1 repetition maximum [Time frame: From enrollment to the end of training at 12 weeks]
- Overall Pain [Time frame: From enrollment to the end of training at 12 weeks]
- Functionality [Time frame: From enrollment to the end of training at 12 weeks]
Secondary outcome measures (5)
- Tendon Neovascularization [Time frame: From enrollment to the end of training at 12 weeks]
- Young's Modulus [Time frame: From enrollment to the end of training at 12 weeks]
- Muscle Thickness [Time frame: From enrollment to the end of training at 12 weeks]
- Muscle Stiffness [Time frame: From enrollment to the end of training at 12 weeks]
- Jump Height [Time frame: From enrollment to the end of training at 12 weeks]
Eligibility criteria
Inclusion criteria
- Between 18 and 50 years of age
- Pain at the inferior pole of the patella, longer than 3 months
- Active lifestyle (sport/exercise minimum 3 times per week)
- No previous injuries or surgeries on the affected leg
Exclusion criteria
- Corticoid injections in the last 6 months
- Current intake of pain or non-steroidal anti-inflammatory drugs
- Additional tendinopathy treatments in the last 6 months (i.e., physical therapy, shock-wave therapy, drug interventions, etc.)
- Neuromuscular or cardiovascular associated diseases or conditions
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Austria · 1 center
- University of Graz — Graz
Identifiers
NCT: NCT07682051 · GZ. 39/255/63