نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه فیزیولوژی و حرکات اصلاحی، دانشکده علوم ورزشی، دانشگاه ارومیه، ارومیه، ایران.
2 گروه بیومکانیک و آسیب شناسی، دانشکده علوم ورزشی، دانشگاه خوارزمی تهران، تهران، ایران.
3 گروه حرکات اصلاحی و آسیب شناسی ورزشی، دانشکده علوم ورزشی، دانشگاه علامه طباطبایی، تهران، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Aims Dynamic knee valgus is recognized as one of the most significant risk factors for anterior cruciate ligament (ACL) injuries. Common strategies to prevent dynamic knee valgus and ACL injuries include taping and visual feedback techniques. This study aimed to compare the immediate effects of taping and visual feedback methods on kinematic risk factors in male athletes exhibiting dynamic knee valgus.
Methods This study was quasi-experimental. 34 athletes aged 20-25 years with dynamic knee valgus were purposefully selected and randomly assigned to taping and visual feedback groups. Kinovea software was utilized to screen for dynamic knee valgus during a 32-cm drop landing task. Both study groups performed double-leg squats, single-leg squats, forward step-downs, and lateral step-downs under taping and visual feedback conditions. In the taping method, an “I” shaped tape was applied from the tibial tuberosity to the medial and lateral femoral condyles to restrict anterior tibial translation. Participants in the visual feedback group stood in front of a full-length mirror. They were instructed to prevent their knees from moving towards the midline of their body while visually monitoring their alignment. Knee and hip flexion angles, knee valgus, and ankle dorsiflexion angles were measured using an IMU system before and after the exercise intervention. A two-way repeated measures analysis of variance was employed to analyze the data at a significance level of P≤0.05.
Results The results of this study indicated a significant increase in peak knee (P=0.001) and hip (p=0.004) flexion angles from the pre-test to post-test in the visual feedback group. Furthermore, the visual feedback group (P=0.001) and the taping group (P=0.001) showed a significant decrease in peak knee valgus angle from pre-test to post-test phase. In between-group comparisons, the visual feedback group compared to the taping group showed a significant increase in peak knee flexion (P= 0.001) and hip flexion (P=0.039) angles and a significant decrease in peak knee valgus angle (P=0.001).
Conclusion Both visual feedback and taping interventions positively reduced kinematic risk factors for ACL injury. However, the visual feedback group demonstrated a larger effect size on most variables than the taping group. This study’s findings support visual feedback’s effectiveness in controlling knee valgus and mitigating kinematic risk factors for ACL injury. Therefore, visual feedback is recommended for athletes seeking to reduce their risk of ACL injury.
کلیدواژهها [English]