Definition The best tests of the muscular endurance from different positions for the males Abdomen group muscles in (15-16) ages

.- ( ). (120) (15-16) (12) (20 -30 40) : (15-16) : (15 -16) . the research aims at:- Identifying the must important movement position according as variable arrangement on factor or the factors important which may give high degree from accuracy in endurance Abdomen measurement .- Identifying the must important test represent volume of performance to employee a movement position from {muscular endurance sit-up test from the state extending the knee jount , muscular endurance sit-up test (bending knee jaunts), muscular endurance from the state of lying with raising and lowing the two legs}. The research sample included (120)pupils whose ages ranged between 15-16 years. the means for collecting data were represented by the test of the abdomen muscles in three motional states at the rate of 12 testing units, each position performed in three times (20,30,40,seconds) till the exhaustion. the researcher arrived at these units after conducting a number of pilot experiments. The factor analysis must important have been used as statistical means. The must important conclusions with the following: muscular endurance sit-up test (bent knees)is the must important movement position for measured Abdomen group muscles to the male in (15-!6) ages, the state of lying with raising and lowing the two legs, and sit-up test from the state stretching the two knees. Then the researcher can Definition the suitable test to each position for (15-16)age.