Effects of Resistance Training on Patellar Tendon Properties in People With Patellar Tendinoapthy

Официальное название

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

Обзор

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.

Подробное описание

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.

Вмешательства

• Другое 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
• Другое 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

Первичные конечные точки

• Tendon Thickness [Срок оценки: From enrollment to the end of training at 12 weeks]
• Tendon sitffness [Срок оценки: From enrollment to the end of training at 12 weeks]
• Tendon CSA [Срок оценки: From enrollment to the end of training at 12 weeks]
• Fascicle length [Срок оценки: From enrollment to the end of training at 12 weeks]
• Muscle Strength [Срок оценки: From enrollment to the end of training at 12 weeks]
• 1 repetition maximum [Срок оценки: From enrollment to the end of training at 12 weeks]
• Overall Pain [Срок оценки: From enrollment to the end of training at 12 weeks]
• Functionality [Срок оценки: From enrollment to the end of training at 12 weeks]

Вторичные конечные точки (5)

• Tendon Neovascularization [Срок оценки: From enrollment to the end of training at 12 weeks]
• Young's Modulus [Срок оценки: From enrollment to the end of training at 12 weeks]
• Muscle Thickness [Срок оценки: From enrollment to the end of training at 12 weeks]
• Muscle Stiffness [Срок оценки: From enrollment to the end of training at 12 weeks]
• Jump Height [Срок оценки: From enrollment to the end of training at 12 weeks]

Критерии участия

Критерии включения

• 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

Критерии исключения

• 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

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Рандомизированное

Модель

Параллельные группы

Маскирование

Открытое

Основная цель

Лечение

Центры проведения

Австрия · 1 центр

• University of Graz — Graz

Идентификаторы

NCT: NCT07682051 · GZ. 39/255/63

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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