Thesis (M.Sc.) - Cairo University - Faculty of Physical Therapy - Department of Basic Science

Fatigue may impair the proprioceptive and kinesthetic properties of joints which influences dynamic balance, that is essential in activities of daily living and for optimal performance in sport activities. To investigate the effect of induced whole body fatigue on dynamic balance including overall stability index (OSI), anteroposteriorstability index (APSI) and mediolateralstability index (MLSI). Thirty subjects from both genders were selected from students of Faculty of physical therapy, Cairo university, their mean age (18.46 ± 0.57) years, as one group. In a pre test - post test design, treadmill was used to induce whole body fatigue, biodex balance system was used to assess dynamic balance before and after fatigue induction by measuring the overall stability index (OSI), anterior/posterior stability index (APSI) and medial/lateral stability index (MLSI), at level four for each participant. There was significant decreasing in dynamic balance with percentage of change 93.61% in OSI, 96.59% in APSI and 90.71% in MLSI immediately after induced fatigue( p = 0.0001). According to the findings of this study, it was concluded that induced whole body fatigue decrease the dynamic postural balance in healthy young adults

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