Dynamic Q Angle and Core Endurance in Adolescent Athletes With Patellofemoral Pain Syndrome

This observational, cross-sectional study aimed to compare dynamic Q-angle, trunk/core endurance, and lower-extremity flexibility between elite adolescent female and male sprinters with and without patellofemoral pain syndrome (PFPS). Participants were classified according to sex and PFPS status. Dynamic Q-angle was assessed during a standardized step-down task, trunk endurance was evaluated using McGill flexion, extension, and lateral endurance tests, and lower-extremity flexibility was assessed using the Straight Leg Raise, Modified Thomas, and Ober tests. The study also examined whether sex and PFPS status were independently associated with dynamic Q-angle. No therapeutic or experimental intervention was administered.

NCT Number	NCT07328750
Lead Sponsor	Eastern Mediterranean University
Conditions	Patellofemoral Pain Syndrome, Anterior Knee Pain Syndrome
Enrollment	150 participants
Start Date	2025-12-01
Primary Completion	2026-02-15 (estimated)
Study Completion	2026-02-20 (estimated)
Updated on ClinicalTrials.gov	2026-07-20