Survey of changes in dynamic posture stability index of gait initiation in professional footballers with chronic ankle instability injury
Poster Presentation XML
Authors
1PhD of Sport Biomechanics, Official coach and Scout of football Federation of Islamic Republic of Iran
2Professor,Kharazmi University, Tehran, Iran
3Assistant Professor of Faculty of Physical Education and Sport Sciences, Kharazmi University, Teheran, Iran
4Assistant Professor of Sports Biomechanics, Arak University, Iran.
Abstract
Introduction: High synergy demand of gait initiation, vital role of correct implementation of the gait initiation pattern in the prevention of falls, proper implementation of goal skills and Finally, the importance of the ankle joint in movement as a factor in a person's relationship with the surface, are among the reasons that require research into control changes in gait initiation. Therefore, aim of the present study was to investigate the changes in the dynamic posture stability index of gait initiation in professional footballers with chronic ankle instability injury (CAI).
Methodology: The present study was applied type and causal-comparative research that examined the gait initiation in professional footballers with CAI by considering changes in dynamic posture stability index. For this purpose, from two KISTLER 9286A Force plate with a frequency of 100 Hz were used. Independent t-test at a significance level of 0.05 was used to compare the values between groups, with SPSS 22 software.
Results: Recorded values of dynamic postural stability index in the anterior-posterior, Medial-lateral, Vertical and Overall (DPSI) gait initiation in professional footballers with CAI was less, compared to the control group. In fact, recording a lower value, means less sway observed in the center of pressure. However, no significant difference was observed between the two groups (p> 0.05).
Conclusion: Recording lower DPSI values that reflect the kinematic activity of the center of pressure and the center of mass, although indicating better equilibrium performance, but this category in the group with CAI is probably due to the use of Anticipatory postural adjustment. The truth of this claim becomes more probable when we examine the recorded numbers of each lower limb separately and find a greater difference between the healthy lower limbs in the two groups. The truth of this claim becomes more probable when we examine the recorded numbers of each limb separately and find a greater difference between the healthy limb in the two groups. Therefore, researchers as well as rehabilitation professionals are advised to prefer the use of a global view to local (positional) protocols in the evaluation and rehabilitation of athletes with CAI
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