Sports Physical TherapyNCT07578935
Comparative Effects of Dynamic Stability Drills and Plyometric Training After Anterior Crutiate Ligament Reconstruction
A study testing Dynamic Stability Drills and Plyometric Training in people with Sports Physical Therapy, run by Riphah International University at 1 site in Pakistan.
Trial summary
Terminal Extension lag (TEL) is a condition that develops when active range of extension is smaller than passive range; frequently noticed in post-traumatic knees after injuries and Anterior Cruciate ligament reconstruction surgery. TEL is typically seen within 6 to 12 weeks after ACL reconstruction. Read more about this study
- Who is it for?
- Ages 20 to 40 years
- Conditions the study is for
- Sports Physical Therapy
- What is being tested?
- Dynamic Stability Drills and Plyometric Training
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 48 participants
- Where
- 1 sitePakistan
- Study dates
- 15 Jan 2026to 15 Jun 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 40 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- Age 20-40
- Both Genders (male \& female)
- History of Anterior Cruciate Ligament Reconstruction (ACLR) between 1-3 years
- Moderate stage (5 to 10 ˚) of terminal extension lag after ACL reconstruction
Who cannot join
- Any other previously serious knee pain and/or surgery limiting of knee range of motion(2)
- Any traumatic conditions around the knee, or any infectious or tumors conditions i.e.
- meniscus injury, fracture, dislocation or osteochondral injury
- Pregnancy, any recently underwent abdominal and back surgery
- BMI ≥ 30 kg/m²
- Any systemic and/or neurological illness, rheumatoid arthritis, osteomyelitis, any neurological disorders, spinal disorders, obesity, Dementia, inflammatory conditions like Ankylosing spondylitis, Rheumatoid arthritis, Osteoporosis, Diabetic neuropathy,
Show all 9Show fewer
- Red flags such as Trauma, Cancer, Constitutional Symptoms (Fever, Malaise, Weight Loss), Recent Infection, Mental retardation, Hemiparesis / Hemiplegia
- Subjects with presence of any fractures
- Heart/diabetic patients
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Pakistan1 site, 1 recruiting
- Recruiting
Rabiya Noor
Lahore, Punjab Province, 54000
iqbal Tariq, phd, 03338236752, iqbal.tariq@riphah.edu.pk
About this study
Official title: Comparative Effects of Dynamic Stability Drills and Plyometric Training on Terminal Extension Lag After Anterior Cruciate Ligament Reconstruction
Terminal Extension lag (TEL) is a condition that develops when active range of extension is smaller than passive range; frequently noticed in post-traumatic knees after injuries and Anterior Cruciate ligament reconstruction surgery. TEL is typically seen within 6 to 12 weeks after ACL reconstruction. Anterior cruciate ligament reconstruction surgery is a critical surgical intervention used to repair ACL tear; which is common among those who are engaged in physical demanding activities and Sportsmen. In the initial days following surgery terminal extension lag affects up to 10 to 35% of individuals. ACL is expectational because it's not just a static stabilizer of knee but also transfers proprioceptive information to the brain so to improve joint's dynamics. This study aims to compare effects of Dynamic Stability Drills (DSD) and Plyometric Training (PT) in reducing terminal knee extension lag in post-ACL reconstruction patients. This study will be a Randomized Clinical Trail and will be conducted in Physiotherapy Department of Bethania Hospital Sialkot. Non-Probability Convenience Sampling will be used to collect data. Total of 48 Participants of the age 20 to 40 years with terminal extension lag of moderate lag stage (typically 9-12 weeks post-op with 5-10° lag) will be selected as sample size. An informed consent will be taken prior study from all the subjects. Outcomes measure will be included Numerical Pain Rating Scale (NPRS) for pain, Single Leg Hope Test and Y Balance Test (Y-BAL) for Dynamic Stability, Universal Goniometer (UG) for Range of Motion, Sphygmomanometer for Knee Strength, International Knee Documentation Committee scores, (IKDC) for Knee function and Limb Symmetry Index (LSI) Calculations. Subjects will be divided into two groups by random number generator table. Both groups will receive a standard physiotherapy protocols which will include: Hot pack , TENS , Mobilizations, Stretching and Strengthening. Group A will receive Dynamic Stability Drills and Group B will receive Plyometric Training along with conventional treatment. Patient will come 3 time a week and data will be recollected after 6 weeks. Data will be analyzed by SPSS version 25.
- Conditions
- Sports Physical Therapy
- Being tested
- Dynamic Stability Drills, Plyometric Training
- Keywords
- Plyometric Exercise, Terminal Extension Lag
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Dynamic Stability DrillsOther
Weak 1-2 Stability Foundation Weight shifts (anterior/posterior, lateral, Double-leg stance on foam surface, Eyes-closed balance (double-leg), Isometric quad \& hamstring contractions, Wall sits + small ball between knees (activate adductors \& quads)Weeks 3-4: Progressive Dynamic Stability, Single-leg stance on foam, Thera-band perturbation drills (knees and hips), TKE (Terminal Knee Extension) on unstable surfaces, Step-downs from 6-inch height (with control),Lateral step-overs (slow \& controlled)
Plyometric TrainingOther
Weak 1-2:
Four types of plyometrics:
- bilateral off-set (alternating box jump) B) bilateral asymmetrical (split jump) C) bilateral symmetrical (30 cm drop jump) and
- unilateral (30 cm drop jump(13) Weak 3-4:
- A lateral jump from left to right limb (A) with landing (B) and immediate jump back to the right limb (C) as opposed to just landing in which occurs during Stage 2(13).
- Images of a countermovement or squat jump in place with maximal height. The removal of the box results in higher landing forces due to landing from a higher height(13
| Study group | Role | What they receive |
|---|---|---|
| Dynamic Stability Drills | Experimental | Not described Receives: Other: Dynamic Stability Drills |
| Plyometric Training | Active comparator | Not described Receives: Other: Plyometric Training |
What is being measured
The primary outcome is the main question the study is designed to answer.
Single leg hope test
Jumping as far as you can on one leg while maintaining your balance and landing firmly is the goal of this challenge. The starting line and the landing leg's heel are used to estimate the distance
Measured: 6th week
Limb Symmetry Index (LSI) Calculation
the Limb Symmetry Index (LSI) calculates the performance difference between two limbs, typically the affected and unaffected limbs following an accident; by dividing the score of the injured limb by the score of the unaffected limb and multiplying the result by 100. It's represented in percentage
Measured: 6th week
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 May 2026
- Study start15 Jan 2026
- Primary completion15 May 2026 (estimated)
- Study completion15 Jun 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Sports Physical TherapyStudies of the same condition, open and under way.
- More trials run by Riphah International UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 48 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Riphah International University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Rabiya Noor, PhD, Principal investigator, Riphah International University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07578935
- Sponsor's protocol ID
- REC/RCR&AHS/25/0148
- Status last verified
- May 2026
- First submitted
- 5 May 2026
- Last updated
- 11 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Lephart SM, Pincivero DM, Giraldo JL, Fu FH. The role of proprioception in the management and rehabilitation of athletic injuries. Am J Sports Med. 1997 Jan-Feb;25(1):130-7. doi: 10.1177/036354659702500126.
PubMed 9006708
Study at a glance
From the registry record, last updated by the sponsor on 11 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparative Effects of Dynamic Stability Drills and Plyometric Training on Terminal Extension Lag After Anterior Cruciate Ligament Reconstruction
- ClinicalTrials.gov ID
- NCT07578935
- Acronym / sponsor ID
- REC/RCR&AHS/25/0148
- Conditions
- Sports Physical Therapy
- Keywords
- Plyometric Exercise, Terminal Extension Lag
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 48 participants (estimated)
- Lead sponsor
- Riphah International UniversityUniversity, hospital or other
- Study start
- 15 Jan 2026 (actual)
- Primary completion
- 15 May 2026 (estimated)
- Study completion
- 15 Jun 2026 (estimated)
- First posted
- 11 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Terminal Extension lag (TEL) is a condition that develops when active range of extension is smaller than passive range; frequently noticed in post-traumatic knees after injuries and Anterior Cruciate ligament reconstruction surgery. TEL is typically seen within 6 to 12 weeks after ACL reconstruction. Anterior cruciate ligament reconstruction surgery is a critical surgical intervention used to repair ACL tear; which is common among those who are engaged in physical demanding activities and Sportsmen. In the initial days following surgery terminal extension lag affects up to 10 to 35% of individuals. ACL is expectational because it's not just a static stabilizer of knee but also transfers proprioceptive information to the brain so to improve joint's dynamics. This study aims to compare effects of Dynamic Stability Drills (DSD) and Plyometric Training (PT) in reducing terminal knee extension lag in post-ACL reconstruction patients. This study will be a Randomized Clinical Trail and will be conducted in Physiotherapy Department of Bethania Hospital Sialkot. Non-Probability Convenience Sampling will be used to collect data. Total of 48 Participants of the age 20 to 40 years with terminal extension lag of moderate lag stage (typically 9-12 weeks post-op with 5-10° lag) will be selected as sample size. An informed consent will be taken prior study from all the subjects. Outcomes measure will be included Numerical Pain Rating Scale (NPRS) for pain, Single Leg Hope Test and Y Balance Test (Y-BAL) for Dynamic Stability, Universal Goniometer (UG) for Range of Motion, Sphygmomanometer for Knee Strength, International Knee Documentation Committee scores, (IKDC) for Knee function and Limb Symmetry Index (LSI) Calculations. Subjects will be divided into two groups by random number generator table. Both groups will receive a standard physiotherapy protocols which will include: Hot pack , TENS , Mobilizations, Stretching and Strengthening. Group A will receive Dynamic Stability Drills and Group B will receive Plyometric Training along with conventional treatment. Patient will come 3 time a week and data will be recollected after 6 weeks. Data will be analyzed by SPSS version 25.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Dynamic Stability Drills | Experimental | Other: Dynamic Stability Drills |
| Plyometric Training | Active comparator | Other: Plyometric Training |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Age 20-40
- Both Genders (male \& female)
- History of Anterior Cruciate Ligament Reconstruction (ACLR) between 1-3 years
- Moderate stage (5 to 10 ˚) of terminal extension lag after ACL reconstruction
Key exclusion criteria (9 listed)
- Any other previously serious knee pain and/or surgery limiting of knee range of motion(2)
- Any traumatic conditions around the knee, or any infectious or tumors conditions i.e.
- meniscus injury, fracture, dislocation or osteochondral injury
- Pregnancy, any recently underwent abdominal and back surgery
- BMI ≥ 30 kg/m²
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Dynamic Stability DrillsWeak 1-2 Stability Foundation Weight shifts (anterior/posterior, lateral, Double-leg stance on foam surface, Eyes-closed balance (double-leg), Isometric quad \& hamstring contractions, Wall sits + small ball between knees (activate adductors \& quads)Weeks 3-4: Progressive Dynamic Stability, Single-leg stance on foam, Thera-band perturbation drills (knees and hips), TKE (Terminal Knee Extension) on unstable surfaces, Step-downs from 6-inch height (with control),Lateral step-overs (slow \& controlled) | Other | Dynamic Stability Drills |
| Plyometric TrainingWeak 1-2: Four types of plyometrics: A) bilateral off-set (alternating box jump) B) bilateral asymmetrical (split jump) C) bilateral symmetrical (30 cm drop jump) and D) unilateral (30 cm drop jump(13) Weak 3-4: 1. A lateral jump from left to right limb (A) with landing (B) and immediate jump back to the right limb (C) as opposed to just landing in which occurs during Stage 2(13). 2. Images of a countermovement or squat jump in place with maximal height. The removal of the box results in higher landing forces due to landing from a higher height(13 | Other | Plyometric Training |
Primary outcome
Single leg hope test
Time frame: 6th week
Jumping as far as you can on one leg while maintaining your balance and landing firmly is the goal of this challenge. The starting line and the landing leg's heel are used to estimate the distance
Limb Symmetry Index (LSI) Calculation
Time frame: 6th week
the Limb Symmetry Index (LSI) calculates the performance difference between two limbs, typically the affected and unaffected limbs following an accident; by dividing the score of the injured limb by the score of the unaffected limb and multiplying the result by 100. It's represented in percentage
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 May 2026.
- Background: PubMed 9006708Lephart SM, Pincivero DM, Giraldo JL, Fu FH. The role of proprioception in the management and rehabilitation of athletic injuries. Am J Sports Med. 1997 Jan-Feb;25(1):130-7. doi: 10.1177/036354659702500126.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Rabiya Noor, PhD principal investigator
Riphah International University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Dynamic Stability Drills and Plyometric Training in people with Sports Physical Therapy, run by Riphah International University at 1 site in Pakistan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 11 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Pakistan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Rabiya Noor, PhD (0334 4355660, rabiya.noor@riphah.edu.pk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Single leg hope test (time frame: 6th week). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07578935, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 May 2026.