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Comparing of Knee Valgus Before and After Functional Fatigue of Core Muscles in Male Athletes
Oral Presentation
Paper ID : 1772-11THCONF
Authors
1Sport science of Shahid Bahonar University of Kerman- Kerman, Iran
2Shahid Bahonar University of Kerman
3Assistant Professor of Sport Injuries and Corrective Exercises, Department of Sports Injuries and Corrective Exercises, Faculty of Sports Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
4Sport Science of Shahid Bahonar University of kerman-kerman, iran
Abstract
Introduction: Stability of core body in exercises known as common method for the injury prevention and a therapeutic method for the rehabilitation of musculoskeletal injuries. Knee injury, especially anterior cruciate ligament (ACL) is one of the most injuries in sport which jumping-landing known as the most important noncontact mechanism The purpose of this study was to compare knee valgus before and after functional fatigue of core muscles in male athletes.
Methodology: Twenty-seven healthy male students of sport science (mean ± SD: age= 22.64±1.73 year, height= 178.48±6.05 cm, weight= 70.62±7.64 kg) participated voluntarily in this research. In order to applying fatigue, functional fatigue of core muscles was used. Knee valgus in initial contact and the maximum knee flexion during two legs jumping–landing maneuver by two digital cameras (Nikon D3300) from sagittal and frontal plans were measured. Paired sample t-test was used for analysis.
Results: The results revealed significant increase of knee valgus in initial contact (P=0.001) and maximum knee flexion (P=0.001) after applying functional fatigue protocol of core muscles.
Discussion: Core muscles fatigue in different sports has negative effect on function of lower extremity. The results of this study showed significant increase of knee valgus after functional fatigue of core muscles, that it can be one of the increasing factors of rate of injury in lower extremity. So identification of injury risk factors in knee joint, especially ACL provide this possibility for coaches and athletes to design their training programs for increase of performance level and bearing capacity of core muscles to play positive role for injury prevention.
Methodology: Twenty-seven healthy male students of sport science (mean ± SD: age= 22.64±1.73 year, height= 178.48±6.05 cm, weight= 70.62±7.64 kg) participated voluntarily in this research. In order to applying fatigue, functional fatigue of core muscles was used. Knee valgus in initial contact and the maximum knee flexion during two legs jumping–landing maneuver by two digital cameras (Nikon D3300) from sagittal and frontal plans were measured. Paired sample t-test was used for analysis.
Results: The results revealed significant increase of knee valgus in initial contact (P=0.001) and maximum knee flexion (P=0.001) after applying functional fatigue protocol of core muscles.
Discussion: Core muscles fatigue in different sports has negative effect on function of lower extremity. The results of this study showed significant increase of knee valgus after functional fatigue of core muscles, that it can be one of the increasing factors of rate of injury in lower extremity. So identification of injury risk factors in knee joint, especially ACL provide this possibility for coaches and athletes to design their training programs for increase of performance level and bearing capacity of core muscles to play positive role for injury prevention.
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