Effects of Eccentric Training in the Rehabilitation of Patients Undergoing Anterior Cruciate Ligament Reconstruction: a Randomized Controlled Trial
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: Conventional Training, Eccentric Training.
- Who it may be relevant to
- Registry conditions: Anterior Cruciate Ligament Reconstruction Rehabilitation, Anterior Cruciate Ligament Reconstruction. Basic parameters: 18 years — 40 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
- Brazil
- 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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Overview
This study aims to investigate the effects of eccentric training on the functional rehabilitation of patients undergoing Anterior Cruciate Ligament Reconstruction (ACL-R). Thirty-four participants undergoing ACL-R will be randomly assigned to two groups: the Conventional Training Group (CTG) and the Eccentric Training Group (ETG). Both groups will adhere to the same post-surgical rehabilitation program, commencing in the first week after ACL-R and continuing until the criteria for sports resumption are achieved. The rehabilitation program will be structured into four phases: immediate post-operative, preparatory, general acquisition, and specific acquisition. The key distinction between the groups lies in their exercise regimen: ETG will prioritize the eccentric phase of movement, whereas CTG will engage in conventional exercises, maintaining uniform load across both movement phases. Assessment procedures will be conducted at three intervals for all participants: immediately post-operative, at 12 weeks post-ACL-R surgery (before the initiation of the training protocol), and at 25 weeks post-ACL-R surgery (upon completion of the training protocol). The primary outcome measure will be the maximum isometric strength of knee extensors. Secondary outcomes will encompass functional status, maximum isometric strength of knee flexors, peak dynamic strength during leg press, quadriceps muscle atrophy, performance in jump tests, and psychological readiness.
Interventions
- Other Conventional Training
Patients will execute the concentric and eccentric phases unilaterally, maintaining consistent load levels, with each phase lasting 2 seconds. - Other Eccentric Training
The concentric phase will be performed bilaterally in approximately 1 second, followed by the unilateral eccentric phase lasting approximately 3 seconds.
Primary outcome measures
- Maximal isometric strength of knee extensors [Time frame: In the 12th and 25th weeks post-surgery]
Secondary outcome measures (6)
- Maximum isometric strength of knee flexors [Time frame: In the 12th and 25th weeks post-surgery]
- Maximum dynamic strength during leg press exercise [Time frame: In the 12th and 25th weeks post-surgery]
- Muscle atrophy [Time frame: In the 12th and 25th weeks post-surgery]
- Self-reported functional impairments [Time frame: In the 12th and 25th weeks post-surgery.]
- Performance in jump tests [Time frame: In the 12th and 25th weeks post-surgery]
- Psychological readiness to return to sport [Time frame: In the 12th and 25th weeks post-surgery.]
Eligibility criteria
Inclusion criteria
\- Individuals of both genders, aged between 18 and 40 years, scheduled for ACL reconstruction surgery during the data collection period.
Exclusion criteria
- Delay of more than 7 days after surgery to initiate the rehabilitation program proposed by the study;
- Presence of injuries related to the rupture of the ACL that hinder partial weight-bearing in the first week after surgery, either due to medical recommendation or the patient inability/disposition.
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
- Single blind
- Primary purpose
- Treatment
Study locations
Brazil · 2 centers
- Private Rehabilitation Center — Veranópolis
- Private Rehabilitation Center — Veranópolis
Identifiers
NCT: NCT06905691 · 77855224.0.0000.5345