Anterior Cruciate Ligament Injuries
Conditions
Interventions
This is an assessor-blinded randomized controlled trial with two parallel groups: conventional resistance training (CRT) group and velocity-based training (VBT) group. Randomization will be stratified
s group allocation. Before the interventions begin, all participants will complete a familiarization session with the equipment and movements. In the CRT group (23 participants), exercises will be per
weeks 5 to 8, 3 sets of 10 repetitions
weeks 9 to 12, 3 sets of 5 repetitions. Load will be adjusted using the repetitions in reserve method. In the VBT group (23 participants), barbell exercises will be performed with maximum velocity int
Sponsors
Universidade Federal de Ciências da Saúde de Porto Alegre
Universidade Federal de Ciências da Saúde de Porto Alegre
Eligibility
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: Individuals of both sexes; aged between 18 and 40 years; physically active; having undergone anterior cruciate ligament reconstruction using any graft type
Exclusion criteria
Exclusion criteria: Having sustained injuries associated with Anterior Cruciate Ligament (ACL) rupture that prevent partial weight-bearing in the first weeks after surgery, whether due to medical recommendation or patient inability or unwillingness; concurrent injuries or functional deficits in other joints, particularly the lumbar spine, hip, or ankle, that impair or prevent exercise execution; any health condition representing an absolute or relative contraindication to high-intensity resistance exercise; absence of full knee extension; isometric strength of the knee extensors or flexors below 50% of the contralateral limb value
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Expected to assess the limb symmetry index of the knee extensor and flexor muscles after the training program, assessed using isokinetic dynamometry (Biodex System 4 Pro); the symmetry index will be calculated by dividing the value of the operated limb by the contralateral limb value multiplied by 100, with an index above 90% considered favorable;Expected to assess the limb symmetry index in the single-leg countermovement jump test after the training program, assessed using a contact mat (JumpTest System, Jump Test, Brazil); the symmetry index will be calculated by dividing the value of the operated limb by the contralateral limb value multiplied by 100, with an index above 90% considered favorable | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected to assess the incidence of re-injuries and other knee injuries after return to sport, assessed through telephone contacts conducted at 3, 6, and 12 months after clearance for return to sport; graft ruptures, contralateral anterior cruciate ligament ruptures, and other sport-related knee injuries causing at least one day of absence from sport will be observed;Expected to assess knee pain intensity before and after the training program, assessed using an 11-point numerical pain rating scale (0 to 10) during stair ascent and descent; scores obtained at pre- and post-intervention assessments, as well as before and after each session throughout the program, will be observed;Expected to assess patient-perceived improvement after the training program, assessed using the Patient Global Impression of Change (PGIC) scale validated for Portuguese; the 7-point scale score at the post-intervention assessment will be observed;Expected to assess self-reported knee function before and after the training program, assessed using the International Knee Documentation Committee (IKDC) questionnaire validated for Brazilian Portuguese; the standardized score from 0 to 100 at pre- and post-intervention assessments will be observed, with higher values indicating better function;Expected to assess psychological readiness to return to sport after the training program, assessed using the Anterior Cruciate Ligament Return to Sport after Injury (ACL-RSI) questionnaire validated for Brazilian Portuguese; the score from 0 to 100 at the post-intervention assessment will be observed, with higher values indicating greater psychological readiness;Expected to assess the architecture of the knee extensor and flexor muscles before and after the training program, assessed using B-mode ultrasound with a 7.5 MHz linear probe (Mindray DP-30); muscle thickness of the rectus femoris, vastus lateralis, long head of the biceps femoris, and semitendinosus will be observed at pre- and post-intervention as | — |
Countries
BR
Contacts
Public ContactBruno Baroni
Universidade Federal de Ciências da Saúde de Porto Alegre
Outcome results
None listed