| Effects of Neuromuscular-Reactive Exercises on Gluteus Medius and Gluteus Maximus Activation in Male Athletes with Dynamic Knee Valgus |
| Paper ID : 1459-SPORTCONGRESS |
| Authors |
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Danesh Zamani Rad *1, Human Minoonejad2, Seyed Hamed Musavi3 1Master of Science in Pathology and Corrective Exercises, University of Tehran 2Vice President of Education, Faculty of Sport and Health Sciences, University of Tehran 3Vice President for Research, Faculty of Sport and Health Sciences, University of Tehran |
| Abstract |
| A total of 12 student-athletes ( males age 26.7 ± 4.67 years) were assessed at the beginning of the season. To screen and specifically identify individuals who exhibited dynamic knee valgus during functional movements, the single-leg squat test was used. Next, the gluteus maximus and gluteus medius muscles were marked to identify electrode placement sites. After skin preparation, surface electrodes were attached to the marked points aligned with the muscle fibers. To record the maximum voluntary isometric contraction (MVIC), the defined muscles performed two trials of 10 seconds each. Then all eight exercises (lunge, squat, bridge, single-leg squat landing, double-leg squat landing, and side-lying hip abduction with knee flexed, standing hip abduction, and the “angel” exercise) were performed in random order. Mauchly’s test of sphericity was used to assess the sphericity assumption. For hypothesis testing (within-group differences), repeated measures analysis of variance was used along with Bonferroni post-hoc tests. All hypothesis tests were conducted at a 95% significance level with α < 0.05 using SPSS21 (2,3). Results: After testing the study hypotheses, the findings showed that in the first hypothesis the bridge exercise had the highest mean rank (75.7) and was the top exercise for the gluteus maximus. In the second hypothesis the side-lying hip abduction with knee flexed was identified as the top exercise for the gluteus medius with a mean rank of 75.6. Their effects compared to the other exercises were statistically significant (P<0.05). Conclusion: The findings indicated that exercises such as side-lying hip abduction with the knee flexed, standing hip abduction, and the bridge significantly increased activation of the gluteus maximus and gluteus medius. These muscles play a central role in controlling pelvic and knee motions, preventing internal femoral rotation, and reducing knee valgus forces. |
| Keywords |
| Gluteus Medius, Gluteus Maximus, Dynamic Knee Valgus, Male Athletes |
| Status: Abstract Accepted (Poster Presentation) |
