The effect of soccer-special fatigue on dynamic postural control in soccer players with functional ankle instability

The purpose of this research was to compare the effects of soccer specific fatigue (SSF) on the dynamic postural control (DPC) in the players who functional ankle instability (FAI) with healthy players. The participants for this study were 38 semiprofessional players kerman city. They were divided into two groups; functional ankle instability (18 persons) and healthy players (20 persons) on the basis of CAIT Questionnaire (Cumberland ankle instability tools Questionnaire) and medical confirmation. For exerting soccer specific fatigue was used Bangsbo Test (BT), and to measuring postural control was used from SEBT Test (Star excursion balance test). For the purpose of confidence from appearing fatigue was used from BORG Scale (RPE). ‌‌ The results of this study showed that there were significant differences (p< 0.05) in the postural control alterations in the one half and end of Bangsbo Test on both groups. So that postural control decreased in the one half and end of Bangsbo Test in both groups. in the healthy players, postural control decreased 3 cm in the one half and 13 cm in the end of BT. But in the FAI players, postural control decreased 10 cm in the one half and 14 cm in the end of BT. Exclusion: results of this research shows that in condition of fatigue, soccer players with FAI rather than healthy players prone to ankle sprains, especially in the end minutes one half of game.