An interventional study of Structured Corrective Exercise Program in Genu Valgum, Biomechanical Phenomena and Athletic Injuries, sponsored by Istanbul Gelisim University. Completed at 1 site in Turkey (Türkiye). Open to female participants aged 14 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-11.
Sponsored by Istanbul Gelisim University · Not applicable, Interventional, and Prevention
Among 52 studies in Athletic Injuries with a site in Turkey — 10 open to participants now, 12 under way, none of them phase 3. Athletic Injuries · Turkey.
Among the 52 studies in Athletic Injuries with a site in Turkey, this one is the 29th largest by enrollment of the 31 interventional ones that give a count, is one of 8 that started in 2023, is one of 31 with no phase, and was the 43rd registered.
258 studies on the registry are indexed under Athletic Injuries; 45 are open to participants now.
Browse Athletic Injuries studies →10 of the 52 studies in Athletic Injuries with a site in Turkey are open now. Recruiting first, the newest first:
Uskudar University · Sites in Turkey
Toros University · Sites in Turkey
Izmir Democracy University · Sites in Turkey
Atılım University · Sites in Turkey
Muzaffer Agir · Sites in Turkey
A study can be open while its sites in Turkey have not opened yet or have stopped. Only those recruiting at a site in Turkey →
Of the 21 Athletic Injuries studies recruiting now, 2 (10%) set no upper age limit and 18 (86%) stop at 75 or younger; 11 take children under 18; 8 take healthy volunteers.
This study: 14 Years to 17 Years · female · healthy volunteers too.
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52 studies; the count open now beside each. This study's row is marked.
First in 2017; this study’s year is marked. 8 started in 2023.
This study's enrollment of 23 is below the median of 44 across 164 interventional studies indexed under Athletic Injuries.
Median enrollment 44 across the 31 interventional studies, 60 across the 21 observational. Of the 38 that completed or were terminated, 1 (3%) have results posted.
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None of the 52 has an industry lead sponsor. The 10 most frequent:
Istanbul Gelisim University is the lead sponsor of 64 studies on the registry; 8 are open to participants now.
Istanbul Gelisim University has 3 studies filed under Athletic Injuries — fewer than ten, so there is no comparison to draw.
4 of the studies in Athletic Injuries with a site in Turkey that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07760103Uskudar UniversityCore Endurance Versus Segmental Stabilization Exercise in Recreational Athletes With Low Back Pain | 2026-12-01 |
| NCT07913217Uludag UniversityPNF Effects on Volleyball Performance | 2027-02-01 |
| NCT07705698Toros UniversityNordic vs Blood Flow Restriction Nordic Exercise in Elite Female Pole Vaulters | 2027-03 |
| NCT06996990Izmir Democracy UniversityInjury Risk Factors in Volleyball Players | 2027-05-15 |
Among the 52 studies in Athletic Injuries with a site in Turkey, from their registry updates:
This tab as a report to print or save as PDF → With an account.
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.
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.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Licensed young female volleyball players.
Aged between 14 and 17 years.
Willingness to participate voluntarily with parental and athlete consent.
Exclusion Criteria:
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.
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
Behavioral: Structured Corrective Exercise Program
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.
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.
Static Q Angle
The measurement of the angle between the quadriceps muscle and the patellar tendon to assess lower extremity alignment.
Time frame: 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.
Time frame: Baseline and post-intervention (8 weeks).
Countermovement Jump (CMJ) Height
Measurement of vertical jump height to evaluate explosive power.
Time frame: Baseline and post-intervention (8 weeks).
Plan to share: 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.
Supporting information: Study protocol, Statistical analysis plan, Informed consent form
Time frame: Data will be available beginning 6 months after publication and ending 3 years after publication.
Access criteria: De-identified individual participant data will be available to researchers who provide a methodologically sound proposal for use in achieving the goals of the approved proposal. Proposals should be directed to btas@gelisim.edu.tr. To gain access, data requestors will need to sign a data access agreement.
No publications or documents are linked to this record.
Ran from Feb 2023 to primary completion in May 2024, 14 months.
Of 119 non-industry interventional studies with no phase under Athletic Injuries, half reached primary completion within 5 months of starting (the median), counting those still running; a quarter within 2 and three quarters within 14. This study's 14 months is above that.
Counting every sponsor, half of 121 studies reached it within 5 months; a quarter within 2 and three quarters within 14.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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Istanbul Gelisim University