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The effect of six week perturbation exercises on the dynamic balance of teenage soccer player predispose to lower extremity injuries
Poster Presentation
Paper ID : 1727-11THCONF
Authors
1دانشگاه خوارزمی
2استادیار ،دانشگاه خوارزمی
3assistant proffessor of faculty of pysical education and sport sciences, kharazmi university
Abstract
Introduction: Soccer is one of the most commonly sports in the world. It is reported that most of the injuries that occur in this sport, involve the lower extremities (87%), and about half (58%) of them are non-contact. One of the underlying causes of injury can be the lack of adequate balance in athletes. Most of the movements in soccer include running, leaping, skip running and jumping to make a person able to display a satisfactory performance and not suffer injuries, needs adequate balance. One of the worst consequences of these injuries is the increased risk of other injuries. Also, financial issues Following lower extremities injuries, such as the cost of surgery and rehabilitation, have increased the need for injury-prevention programs.
Methodology: Participants who were talented to lower extremities injuries, identified by tuck jump test, that it is a valid test that examines the biomechanical factors associated with lower extremities injury. Those who had at least three defects in this test and had no background of lower extremities injury were selected as qualified individuals. Subjects were randomly assigned to two groups of practice and control. Perturbation exercises were given to the training group. These exercises is a part of the sensor-motor training, that with emphasizing the improvement of the selection of appropriate muscle responses and improving the accuracy of the individual in these responses, increase the stability of the lower extremities. The Y-test was used to evaluate the dynamic balance. In this test, dynamic balance was determined with the access of the dominant foot of each person in three directions: anterior, posterior-internal and posterior-external. In order to normalize the data, the score of the subjects in each direction was divided by length of the leg and multiplied by 100. Descriptive statistics were used to calculate the mean and standard deviation of age, height and weight of subjects. To determine the difference between the results of pre-test and the post-test of each group, Multivariate Covariance Analysis (MANCOVA) in significant level 0.05>P was used.
Results: The results of the MANCOVA test showed that the P-value was significantly improved in all of three directions, anterior (P=0.001), posterior-internal (P=0.001) and posterior-external (P=0.001).
Discussion: Based on the results of this study, Probably it can be concluded that Perturbation exercises can be effective in preventing lower extremity injuries by improving dynamic balance, which it is one of the common risk factors for lower extremity damage.
Methodology: Participants who were talented to lower extremities injuries, identified by tuck jump test, that it is a valid test that examines the biomechanical factors associated with lower extremities injury. Those who had at least three defects in this test and had no background of lower extremities injury were selected as qualified individuals. Subjects were randomly assigned to two groups of practice and control. Perturbation exercises were given to the training group. These exercises is a part of the sensor-motor training, that with emphasizing the improvement of the selection of appropriate muscle responses and improving the accuracy of the individual in these responses, increase the stability of the lower extremities. The Y-test was used to evaluate the dynamic balance. In this test, dynamic balance was determined with the access of the dominant foot of each person in three directions: anterior, posterior-internal and posterior-external. In order to normalize the data, the score of the subjects in each direction was divided by length of the leg and multiplied by 100. Descriptive statistics were used to calculate the mean and standard deviation of age, height and weight of subjects. To determine the difference between the results of pre-test and the post-test of each group, Multivariate Covariance Analysis (MANCOVA) in significant level 0.05>P was used.
Results: The results of the MANCOVA test showed that the P-value was significantly improved in all of three directions, anterior (P=0.001), posterior-internal (P=0.001) and posterior-external (P=0.001).
Discussion: Based on the results of this study, Probably it can be concluded that Perturbation exercises can be effective in preventing lower extremity injuries by improving dynamic balance, which it is one of the common risk factors for lower extremity damage.
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