The effect of an acute functional soccer fatigue training on some knee and trunk kinematic factors in female soccer players with dynamic knee valgus
Poster Presentation
Paper ID : 1299-SSRC
Authors
1ندارد
2وزارت علوم
3استاد دانشگاه تهران
Abstract
Background: One of the most important injuries in soccer is the anterior cruciate ligament injury, which is two to six times more likely to occur in women than men, and the main factors affecting this injury are dynamic knee valgus and fatigue.
Aim: The purpose of this study was to investigate the effect of an acute functional fatigue training on some knee and trunk kinematic factors in female soccer players with dynamic knee valgus.
Methodology: The research subjects included twenty eight female soccer players who were divided into two groups of 14 players with and without dynamic knee valgus. The amount of kinematic changes of the knee and trunk in frontal and sagittal planes when the foot contact the ground in single leg and double leg landing of simulated soccer landings before and after the Bangsbo fatigue protocol was recorded with a high speed video camera and analyzed by kinovea. Variance test with repeated measurements and dependent t test were also used to analyze the research findings.
Results: The results of this research showed that a training with acute fatigue had an effect on trunk and knee kinematics and the amount of knee flexion was significantly different in the double leg landing in two groups, but in single leg landing the amount of knee valgus changes was significantly different in the two groups. Also there was a significant difference in the amount of trunk flexion alteration in the double leg landing between two groups, but a significant difference was found in the lateral flexion of the trunk in both groups and landing techniques.
Conclusion: Based on the findings, it seems that acute fatigue can affect the trunk and knee angles of female soccer players and possibly put them at risk of anterior cruciate ligament injury.
Aim: The purpose of this study was to investigate the effect of an acute functional fatigue training on some knee and trunk kinematic factors in female soccer players with dynamic knee valgus.
Methodology: The research subjects included twenty eight female soccer players who were divided into two groups of 14 players with and without dynamic knee valgus. The amount of kinematic changes of the knee and trunk in frontal and sagittal planes when the foot contact the ground in single leg and double leg landing of simulated soccer landings before and after the Bangsbo fatigue protocol was recorded with a high speed video camera and analyzed by kinovea. Variance test with repeated measurements and dependent t test were also used to analyze the research findings.
Results: The results of this research showed that a training with acute fatigue had an effect on trunk and knee kinematics and the amount of knee flexion was significantly different in the double leg landing in two groups, but in single leg landing the amount of knee valgus changes was significantly different in the two groups. Also there was a significant difference in the amount of trunk flexion alteration in the double leg landing between two groups, but a significant difference was found in the lateral flexion of the trunk in both groups and landing techniques.
Conclusion: Based on the findings, it seems that acute fatigue can affect the trunk and knee angles of female soccer players and possibly put them at risk of anterior cruciate ligament injury.
Keywords