20.500.12556/RUL-184541 Alterations in pelvic kinematics with speed, incline, and fatigue in female runners Introduction: In running, female runners show higher overuse-injury rates, partly due to sex-specific anatomy and biomechanics. Pelvic motion is central to lower-limb kinematics, however, female-specific responses are underexamined. This study tested how running speed, incline, and fatigue influence pelvic rotation, tilt, and obliquity in recreational female runners. Methods: Twenty-two females completed treadmill trials at 10, 12, and 14 km/h on level ground and at 10 km/h with 5% and 10% inclines, before and after a 30-minute run at 80% heart-rate reserve to induce moderate fatigue. A 3D motion-capture system recorded pelvic rotation, tilt, and obliquity at heel-strike, toe-off, peak values, and ranges of motion. Linear mixed-effects models assessed main and interaction effects; asymmetry was quantified via symmetry index between left and right gait cycles. Results: Higher speeds increased peak pelvic rotation, tilt, and obliquity, and enlarged rotation and obliquity range of motion. A 10% incline raised peak pelvic obliquity and rotation and increased range of motion for rotation, tilt, and obliquity; a 5% incline had no measurable effect. Fatigue increased peak pelvic rotation and range of motion for rotation and tilt. A fatigue × 10% incline interaction showed that incline-related increases in tilt range of motion observed when fresh were reduced under fatigue. Pelvic tilt asymmetry rose with speed. Discussion: Speed, incline, and fatigue each modulate pelvic kinematics in recreational female runners, with effect sizes often exceeding reports from mixed-sex samples. Notably, greater frontal-plane motion at higher speeds and increased transverse-plane motion with incline and fatigue may heighten loads on the iliotibial band, hamstrings, or lumbar spine. sport asymmetry biomechanics mixed effect model pelvic kinematics rearfoot strike running related injury šport asimetrija biomehanika model mešanih učinkov kinematika medenice udarec zadnjega dela stopala poškodba povezana s tekom tek true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-09 13:40:30 2026-07-09 13:40:33 2026-07-10 11:33:48 0000-00-00 00:00:00 2026 0 0 12 str. art. 1721641 Vol. 7 2026 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 796.01 2624-9367 10.3389/fspor.2025.1721641 268468483 fspor-7-1721641.pdf fspor-7-1721641.pdf 1 1BFCE780AE808D041E7F9CE00D155B1A 0cf5db5d820b25f0ec4a18138c0aa7e84e498423f8a82f357bff75e621f1a840 83406e52-7b8e-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237432 https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2025.1721641 0 e125f827-7b8a-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237429 Fakulteta za šport 0 0 0