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Effects of Progressive Resistance Exercises Among Athletes With Hamstring Deficit After ACL Reconstruction

Effects of Progressive Resistance Exercises on Range of Motion & Strength and Function Among Athletes With Hamstring Deficit After ACL Reconstruction

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06846164
Enrollment
20
Registered
2025-02-25
Start date
2024-04-24
Completion date
2025-02-25
Last updated
2025-02-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sports Physical Therapy

Keywords

Anterior Cruciate Ligament, resistance training, Athletes

Brief summary

The goal of the study is to find out how mild home exercises (similar to usual care) and progressive strength training, which include neuromuscular exercise, affected knee joint function and HS muscle strength in individuals who has persistent HS muscle strength deficits 12-24 months after ACLR.

Detailed description

The objective of the present study is to investigate whether individuals, who perform supervised progressive strength training including elements of neuromuscular exercise intervention (SNG) will achieve greater improvements in leg muscle power and greater improvements in knee function compared with individuals performing a homebased low-intensity weight-bearing exercise protocol. We hypothesize that supervised progressive strength training would be superior to a homebased low-intensity weight-bearing exercise protocol for regaining muscle strength and knee function. This study will impact society by promoting health, reducing healthcare costs, supporting productivity, and contributing to a more active and engaged community. Limited investigation exists regarding the durability of progressive resistance exercises in mitigating hamstring deficits post-ACL reconstruction and the personalized optimization of exercise protocols for individual athletes. Further exploration is needed for sustained benefits and tailored rehabilitation strategies.

Interventions

OTHERSupervised progressive strength training including elements of neuromuscular exercise intervention (SNG)

Participants will be randomized to SNG and will perform training sessions (60-70 minutes) twice weekly, over a duration of 12 weeks, commencing 8 exercises for the lower extremities in 3 sets of 10 repetitions with an intensity of 12 repetitions maximum. Individual progression, quality of exercise, number of sets, repetitions, and additional training weights will be monitored

OTHERhome based low-intensity weight-bearing exercise protocol.

Participants allocated to CON will receive written and verbal instructions regarding 4 home-based (low intensity), weight-bearing exercises for the lower extremities, to be performed twice weekly. This intervention is designed to resemble usual care in cases where persistent knee muscle strength deficits would be discovered and considered a clinical issue.

Sponsors

Riphah International University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
No

Inclusion criteria

* Age between 18 - 30 years * 12-24 months post-surgery (ACL reconstruction) * Persistent maximal isometric knee flexor strength asymmetry (\>10% leg-to-leg the difference, in the isometric testing angle of 90° knee flexion)

Exclusion criteria

* Body mass index \[BMI\] more than 35 * known lower limb pathology (including previous and/or concomitant knee injuries requiring surgical intervention to either knee)

Design outcomes

Primary

MeasureTime frameDescription
Limb Symmetry Index12 weeksIt is used for knee extensors and flexors strength. It is the strength ratio between the injured and uninjured knees. It is a common method of assessing strength and functional performance after ACLR.

Secondary

MeasureTime frameDescription
H/Q ratio12 weeksit is used to detect muscle imbalance, monitor knee joint stability, and indicate lower extremity injury prevention and rehabilitation.

Other

MeasureTime frameDescription
KOOS questionnaire12 weeksIt is used to assess five outcomes: pain, activity of daily living, sport and recreation function, and knee-related quality of life.

Countries

Pakistan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026