Genu ValgumNCT07578701
THE EFFECT OF CORRECTIVE EXERCISES ON Q ANGLE AND JUMP-LANDING MECHANICS
A study testing Structured Corrective Exercise Program in people with Genu Valgum and Biomechanical Phenomena, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
Trial summary
This study examines the effects of an 8-week structured corrective exercise program on Q angle and jump-landing mechanics (evaluated via the Landing Error Scoring System - LESS) in competitive young female volleyball players during their in-season period. Read more about this study
- Who is it for?
- Ages 14 to 17 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Genu Valgum, Biomechanical Phenomena, Athletic Injuries
- What is being tested?
- Structured Corrective Exercise Program
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 23 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 20 Feb 2023to 15 Jun 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 14 to 17 years
- Women only
- Healthy volunteers accepted
- Child
Who may be able to join
- Licensed young female volleyball players.
- Aged between 14 and 17 years.
- Willingness to participate voluntarily with parental and athlete consent.
Who cannot join
- History of major lower extremity injuries or orthopedic surgery.
- Presence of any musculoskeletal or neurological condition that prevents participation in the exercise program.
- Lack of regular attendance at volleyball training sessions.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Istanbul Gelisim University, Faculty of Sport Sciences
Istanbul, 34310
About this study
Official title: The Effect of Corrective Exercises on Q Angle, Balance, and Jump-Landing Mechanics in Female Volleyball Players
This study examines the effects of an 8-week structured corrective exercise program on Q angle and jump-landing mechanics (evaluated via the Landing Error Scoring System - LESS) in competitive young female volleyball players during their in-season period. Twenty-three athletes were assigned to either an experimental group receiving corrective exercises or a control group maintaining standard training. The primary goal is to determine if targeted biomechanical corrections can improve knee alignment and movement quality to mitigate injury risks.
Read the detailed description
The intervention consists of a specialized corrective exercise program focused on body segment alignment and injury risk mitigation, performed over an 8-week duration. Assessments were conducted pre- and post-intervention, including:
Static Q angle measurements.
Biomechanical analysis using the Landing Error Scoring System (LESS).
Countermovement jump (CMJ) height to evaluate explosive power.
The study analyzes whether integrating these exercises into in-season training effectively reduces the Q angle and improves jump-landing mechanics compared to a control group performing only standard volleyball training.
- Conditions
- Genu Valgum, Biomechanical Phenomena, Athletic Injuries, Knee Injuries
- Being tested
- Structured Corrective Exercise Program
- Keywords
- Volleyball, Q Angle, Landing, Corrective Exercises, Jump
- Medical subject headings
- Genu Valgum, Athletic Injuries, Knee Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Structured Corrective Exercise ProgramBehavioural
The corrective exercise program was implemented 3 times per week for 8 weeks during the in-season period. The protocol focused on optimizing lower extremity alignment, improving neuromuscular control, and correcting faulty jump-landing patterns. Key components included exercises targeting body segment alignment, specific drills to reduce the Q angle, and neuromuscular training to enhance Landing Error Scoring System (LESS) scores. All sessions were integrated into the athletes' regular volleyball training schedule to ensure proper kinetic chain integration and injury risk mitigation.
| Study group | Role | What they receive |
|---|---|---|
| Experimental Group | Experimental | Young female volleyball players (n=12) who participated in an 8-week structured corrective exercise program during the in-season period, in addition to their standard volleyball training Receives: Behavioral: Structured Corrective Exercise Program |
| Control Group | No intervention | Young female volleyball players (n=11) who continued their standard volleyball training during the 8-week study period without participating in any corrective exercise protocol. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Static Q Angle
The measurement of the angle between the quadriceps muscle and the patellar tendon to assess lower extremity alignment.
Measured: Baseline and at the end of the 8-week intervention.
Landing Error Scoring System (LESS) Score
A clinical tool used to assess jump-landing mechanics through video analysis.
Measured: Baseline and post-intervention (8 weeks).
Countermovement Jump (CMJ) Height
Measurement of vertical jump height to evaluate explosive power.
Measured: Baseline and post-intervention (8 weeks).
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 start20 Feb 2023
- Primary completion10 May 2024
- Study completion15 Jun 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Genu ValgumStudies of the same condition, open and under way.
- 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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 23 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Gelisim University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Burak TAŞ, PhD, Principal investigator, Istanbul Gelisim University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07578701
- Sponsor's protocol ID
- GOKAEK-2022/21.16
- Status last verified
- May 2026
- First submitted
- 5 May 2026
- Last updated
- 11 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Individual participant data that underlie the results reported in this article, after de-identification, will be available from the corresponding author on reasonable request.
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
- The Effect of Corrective Exercises on Q Angle, Balance, and Jump-Landing Mechanics in Female Volleyball Players
- ClinicalTrials.gov ID
- NCT07578701
- Acronym / sponsor ID
- GOKAEK-2022/21.16
- Conditions
- Genu Valgum, Biomechanical Phenomena, Athletic Injuries, Knee Injuries
- Keywords
- Volleyball, Q Angle, Landing, Corrective Exercises, Jump
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 23 participants (actual)
- Lead sponsor
- Istanbul Gelisim UniversityUniversity, hospital or other
- Study start
- 20 Feb 2023 (actual)
- Primary completion
- 10 May 2024 (actual)
- Study completion
- 15 Jun 2024 (actual)
- 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.
This study examines the effects of an 8-week structured corrective exercise program on Q angle and jump-landing mechanics (evaluated via the Landing Error Scoring System - LESS) in competitive young female volleyball players during their in-season period. Twenty-three athletes were assigned to either an experimental group receiving corrective exercises or a control group maintaining standard training. The primary goal is to determine if targeted biomechanical corrections can improve knee alignment and movement quality to mitigate injury risks.
Detailed description
The intervention consists of a specialized corrective exercise program focused on body segment alignment and injury risk mitigation, performed over an 8-week duration. Assessments were conducted pre- and post-intervention, including:
Static Q angle measurements.
Biomechanical analysis using the Landing Error Scoring System (LESS).
Countermovement jump (CMJ) height to evaluate explosive power.
The study analyzes whether integrating these exercises into in-season training effectively reduces the Q angle and improves jump-landing mechanics compared to a control group performing only standard volleyball training.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental Group | Experimental | Behavioral: Structured Corrective Exercise ProgramYoung female volleyball players (n=12) who participated in an 8-week structured corrective exercise program during the in-season period, in addition to their standard volleyball training |
| Control Group | No intervention | –Young female volleyball players (n=11) who continued their standard volleyball training during the 8-week study period without participating in any corrective exercise protocol. |
Who may qualify
- Ages
- 14 to 17 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (3 listed)
- Licensed young female volleyball players.
- Aged between 14 and 17 years.
- Willingness to participate voluntarily with parental and athlete consent.
Key exclusion criteria (3 listed)
- History of major lower extremity injuries or orthopedic surgery.
- Presence of any musculoskeletal or neurological condition that prevents participation in the exercise program.
- Lack of regular attendance at volleyball training sessions.
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 |
|---|---|---|
| Structured Corrective Exercise ProgramThe corrective exercise program was implemented 3 times per week for 8 weeks during the in-season period. The protocol focused on optimizing lower extremity alignment, improving neuromuscular control, and correcting faulty jump-landing patterns. Key components included exercises targeting body segment alignment, specific drills to reduce the Q angle, and neuromuscular training to enhance Landing Error Scoring System (LESS) scores. All sessions were integrated into the athletes' regular volleyball training schedule to ensure proper kinetic chain integration and injury risk mitigation. | Behavioural | Experimental Group |
Primary outcome
Static Q Angle
Time frame: Baseline and at the end of the 8-week intervention.
The measurement of the angle between the quadriceps muscle and the patellar tendon to assess lower extremity alignment.
Landing Error Scoring System (LESS) Score
Time frame: Baseline and post-intervention (8 weeks).
A clinical tool used to assess jump-landing mechanics through video analysis.
Countermovement Jump (CMJ) Height
Time frame: Baseline and post-intervention (8 weeks).
Measurement of vertical jump height to evaluate explosive power.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 May 2026.
- Individual participant dataSharing planned: Yes. Individual participant data that underlie the results reported in this article, after de-identification, will be available from the corresponding author on reasonable request.
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Persona Total Knee Arthroplasty Outcomes Study
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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. This study is not recruiting at the moment.
Burak TAŞ, PhD principal investigator
Istanbul Gelisim 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 Structured Corrective Exercise Program in people with Genu Valgum and Biomechanical Phenomena, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
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 3 inclusion and 3 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: finished, 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 Turkey (Türkiye). 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Static Q Angle (time frame: Baseline and at the end of the 8-week intervention.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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.