| The acute effect of functional fatigue on knee and trunk kinematics during double leg landing in female soccer players with dynamic knee valgus |
| Paper ID : 1016-SPORTCONGRESS |
| Authors |
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niloofar tajalli1, Mohammad Hossein Alizadeh *2, Seyed Hamed Musavi3 1Shahid Beheshti University 2university of Tehran 3univercity of Tehran |
| Abstract |
| Introduction: Dynamic knee valgus (DKV) is due to the weakness of the thigh abductor muscles and the vastus medialis muscle, which increases the internal rotation of the thigh and increases the possibility of anterior cruciate ligament (ACL) injury. The amount of DKV in women is higher than men, which is one of the reasons for the possibility of more injury in women. Methods: The present study is quasi-experimental research conducted on 28 female soccer players who were selected using purposeful and convenience sampling. They were classified into two groups with and without DKV. The subjects performed a double leg soccer landing, and the kinematic changes of the participants' trunk and knees were recorded through high-speed video cameras (SONY camera) in two sagittal and frontal planes and analyzed by Kinovea software. The data were analyzed in SPSS-26 software using a mixed ANOVA statistical test. Results: The results of this study showed that there was a significant interaction effect between the acute effect of functional fatigue and the two groups with and without DKV on the amount of knee flexion and flexion and lateral flexion of the trunk during double leg landing. Fatigue significantly affected the amount of knee flexion and valgus at the initial contact of the foot with the ground in both groups. Fatigue also had a significant effect on trunk flexion in the group without DKV and on lateral flexion of the trunk in the DKV group. Conclusion: As a result, fatigue may have a greater impact on the knee and trunk kinematics of female soccer players with DKV in the sagittal plane, placing greater load on the knee joint and exposing this group of players to more serious injury. Therefore, it seems necessary to consider measures to prevent injury in this group of individuals. |
| Keywords |
| Anterior Cruciate Ligament, Bangsbo, Dynamic Knee Valgus |
| Status: Abstract Accepted (Oral Presentation) |
