Effect of swiss ball exercises on some physical and physiological variables and their relationship with kata performance level

The present work aims to study the effect of Swiss ball exercises on the abdominal, back and leg muscles strength, hip and spine flexibility, static and dynamic balance and Vital Capacity in addition to their relationship of Gankaku Kata performance level. (12) Women Karateka aged (18-20) years from Zagazig University karate first- team participated in 8 weeks Swiss Ball exercises. The present study included Sit- Up legs- straight, Back Lift Strength, leg lift strength, grand car flexibility, Trunk Extension Flexibility, stroke Stand, Modified Bass Test of Dynamic Balance and Vital Capacity Tests, surface electromyography (EMG) was used to assess abdominal and back muscles activity during kata skills, The level of performance was evaluated by five Judgers accredited by the Egyptian Federation of Karate. Results showed significant differences between the two measures of physical and physiological variables with improvement of Gankaku Kata performance