Actively Recruiting
Effects of Eccentric Training in the Rehabilitation of Patients Undergoing Anterior Cruciate Ligament Reconstruction: a Randomized Controlled Trial
Led by Federal University of Health Science of Porto Alegre · Updated on 2025-04-24
34
Participants Needed
2
Research Sites
13 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are evaluating how eccentric training affects the rehabilitation of patients undergoing Anterior Cruciate Ligament Reconstruction (ACL-R). This randomized controlled trial includes thirty-four participants who will be assigned to either a Conventional Training Group (CTG) or an Eccentric Training Group (ETG). Both groups will follow the same post-surgical rehabilitation program starting in the first week after ACL-R and continuing until they meet criteria to return to sports. The rehabilitation is divided into four phases: immediate post-operative, preparatory, general acquisition, and specific acquisition phases. Participants in the CTG will perform exercises with equal focus on concentric and eccentric muscle phases, maintaining a constant load with each phase lasting 2 seconds. In contrast, the ETG will prioritize the eccentric phase, performing the concentric phase bilaterally in about 1 second followed by a unilateral eccentric phase lasting about 3 seconds. Assessments will occur at three time points: immediately after surgery, at 12 weeks post-surgery before training begins, and at 25 weeks post-surgery after training ends. Throughout the study, participants will undergo evaluations of knee extensor maximum isometric strength, which is the primary outcome. Secondary measures include knee flexor strength, leg press dynamic strength, muscle atrophy, self-reported functional impairments, jump test performance, and psychological readiness to return to sport. These assessments take place at 12 and 25 weeks post-surgery to monitor progress and rehabilitation effectiveness.
CONDITIONS
Brief Title
Effects of Eccentric Training in the Rehabilitation of Patients Undergoing Anterior Cruciate Ligament Reconstruction: a Randomized Controlled Trial
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Individuals of both genders, aged between 18 and 40 years
- Scheduled for Anterior Cruciate Ligament reconstruction surgery during the data collection period
You will not qualify if you...
- Delay of more than 7 days after surgery to start the rehabilitation program
- Injuries from ACL rupture that prevent partial weight-bearing in the first week after surgery due to medical advice or patient inability
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Up to 25 weeks post-surgery
Participants undergo rehabilitation training focusing on either conventional concentric and eccentric phases or eccentric-focused training following ACL reconstruction surgery.
Regular visits for rehabilitation sessions as scheduled by the study
Duration - Up to 25 weeks post-surgery
Participants are assessed for muscle strength, muscle atrophy, functional impairments, jump performance, and psychological readiness to return to sport at 12 and 25 weeks post-surgery.
2 visits (at 12 and 25 weeks post-surgery)
Trial Site Locations
Total: 2 locations
1
Private Rehabilitation Center
Veranópolis, Rio Grande do Sul, Brazil, 95330000
Not Yet Recruiting
2
Private Rehabilitation Center
Veranópolis, Rio Grande do Sul, Brazil, 95330000
Actively Recruiting
Research Team
G
Gabriela Bissani Gasparin
How is the study designed?
Study Type
INTERVENTIONAL
Masking
SINGLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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