Emad Shokouhi; Ali Asghar Norasteh; Ali Shamsi Majelan; Mohammad Ali Sanjari
Abstract
Background and Aim: Postural stability is defined as body’s ability to maintain the center of gravity in the range of stability. Soccer players needs to have stable and reliable performance, therefore ankle injuries may cause an interruption in performance of professional soccer players. ...
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Background and Aim: Postural stability is defined as body’s ability to maintain the center of gravity in the range of stability. Soccer players needs to have stable and reliable performance, therefore ankle injuries may cause an interruption in performance of professional soccer players. The aim of this study was to compare the postural stability of soccer players with and without chronic ankle instability during the jump-landing functional test. Material and Methods: 28 soccer players include 14 people with chronic ankle instability (CAI) and 14 healthy people participated in study. Time to stabilization (TTS) and center of pressure (COP) of jump-landing functional test were measured by force plate device. Ankle injury was assessed by self reporting and also standard questionnaire. Independent sample t-test was used to analyze the collected data at significant level of p <0.05. Result: The findings showed that there was significant difference in the COP of sagittal plane jump-landing in medial-lateral (p= 0.002) and anterior-posterior (p= 0.01) directions and it was the same for frontal plane jump-landing in media-lateral (p= 0.008) and anterior-posterior (p= 0.02) directions between players with and without chronic ankle injury. In other words, the COP in players with chronic ankle injury was significantly greater than healthy players, but TTS was very close to each other in two groups (p <0.05). Conclusion: In attention to the importance role of media-lateral ankle ligaments in postural stability, it seems that the injury of these ligaments could affect in COP displacement, and also postural stability factors. Soccer players with chronic ankle instability had more COP changes than healthy players. According to the role of proprioception in postural control, recommended that athletes with ankle injury contributed defects your stability and balance with practice proprioception training to increase the strength of the lower limb.
Mohammad Alikhani; Ali Asghar Norasteh; Amir Hossein Ghorbani; Hasan Alikhani; Asieh Mirza Aghajani
Abstract
Background and Aim: The purpose of this study was to evaluate the effect of 8 weeks of core stability training with Swiss ball on the balance of teenager soccer players. Materials and Methods: 30 teenager soccer players were selected and divided randomly into two control and experimental groups. The ...
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Background and Aim: The purpose of this study was to evaluate the effect of 8 weeks of core stability training with Swiss ball on the balance of teenager soccer players. Materials and Methods: 30 teenager soccer players were selected and divided randomly into two control and experimental groups. The training program of experimental group was included core stability exercises for 8 weeks, 3 times per week. In first four weeks experimental group performed exercises in two sets with 5 repeats and second four weeks of 2 sets with 10 repeats. In this period, the control group only participated in the practice of soccer. The evaluation of the static balance was done by Stork test and the dynamic balance was done by Y test. After normality test of data mean distribution by Kolmogorov-Smirnov test, paired- samples t-test was used for extraction of results and significance level considered if p≤0.05. Results: Results showed significant differences in poster medial (p=0.002) and poster lateral (p=0.04) direction in the experimental group in post-test. There were no significant differences in static balance (p=0.91) and anterior direction between pre-test and post-test (p=0.33). Conclusion: According to the results of this research, the core stability exercises can be performed on teenager soccer players and children by coaches and teachers to improve balance and prevent sport injuries.
