Virtual reality visual stimulation added to jump training for athletes with knee valgus
Official title: Effects of Optokinetic Stimulation Added to Drop Vertical Jump Training on Landing Error Scores and Dynamic Knee Valgus: An Assessor-Blinded Randomized Controlled Trial
Run by Bahçeşehir University · NCT07918612 · Data updated 2026-11-12
This pilot study tests whether adding VR-based optokinetic stimulation to jump-landing training helps reduce inward knee movement and improve landing technique in young adult basketball or volleyball players.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 24 Years |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | Bahçeşehir University Academic / other |
| Locations | 1 site (Istanbul) |
| Status | Recruiting |
| Started | November 8, 2026 |
| Main results expected | March 2027 |
| Study ends | March 2027 |
| Registry record updated | November 10, 2026 |
| Trial ID | NCT07918612 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Active basketball or volleyball players aged 18-24 with a BMI 18.5-25 and a frontal plane projection angle >10 degrees during single-leg squats.
✕Probably not a fit
Individuals with recent trunk or lower-extremity injuries, musculoskeletal abnormalities, or contraindications to VR exposure may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This two-arm, assessor-blinded randomized pilot trial examines whether seated virtual reality optokinetic stimulation, delivered before each block of drop vertical jump training, improves landing technique and reduces dynamic knee valgus in active athletes. Twenty licensed players aged 18-24 are randomized to jump-landing training alone or the same training plus VR stimulation, with assessments before, after training, and at one-week follow-up. Outcomes include Landing Error Scoring System scores and frontal plane projection angle measurements during single-leg squats, along with system usability and simulator sickness data to gauge eligibility. A familiarization session precedes randomization, and participants perform standardized warm-ups and feedback-driven training. The study uses a parallel-group design with assessor blinding to group allocation to minimize bias.
Why it matters
Potential benefit: If successful, this approach could enhance knee control during landing and potentially reduce injury risk in young athletes.
How similar studies have gone: Previous work has explored VR and visual-motor training for movement control, with promising signals but limited direct evidence for this exact approach in knee valgus.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Aged 18-24 years. * Body mass index between 18.5 and 25 kg/m². * Currently participating as an active, licensed basketball or volleyball athlete. * No trunk or lower-extremity injury within the previous six months. * Frontal plane projection angle greater than 10 degrees during the single-leg squat test. * System Usability Scale classification of A+, corresponding to the 96th-100th percentile, following virtual reality familiarization. * Ability to tolerate a five-minute virtual reality familiarization session, with a Simulator Sickness Questionnaire total score of 20 or less after the session. * Provision of written informed consent. Exclusion Criteria: * History of trunk or lower-extremity injury within the previous six months. * History of lower-extremity fracture or dislocation. * History of low back pain. * Musculoskeletal abnormalities. * Visual, auditory, vestibular, or neurological impairments that prevent performance of the study tasks. * Pregnancy. * Malignancy or metabolic disease. * Cybersickness symptoms that prevent toleration of the virtual reality application.
Where it's running
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Istanbul Nisantasi University
Istanbul, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: Büşra Tamgüç, PT, MSc
- Email: busra.tamguc.9@gmail.com
- Phone: 05313373355
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.