الملخص
1-Identify some of some physiological and biochemical changes for the short and medium distances competitors for the special needs category 46 handicapped2-Identify some of biochemical differences for the special needs persons in short and medium distances competitors for the special needs category 46 handicapped for 400-800 m.3-Identify the differences between the physiological and biochemical changes between short and medium activities currently understudy. The two researchers have suggested the following:-There is statistical significance in some of physiological changes for the special needs for the short distance sample (100-200m) category 46 handicapped There is differences of statistic significance for some of biochemical changes in favor of the sample for the medium activity (400-800 m) handicapped category 46( )There are differences with statistical significance in biochemical and physiological variables between activities , me3dium speed, category 46 handicap .Both researchers depended upon descriptive method with comparative studies manner in order to suits the nature of the research .This chapter included choosing sample method . Also conducting statistical methods used in dealing with the results of biochemical and physiological variables for those with special needs .The researchers have reached the following conclusions ;-Practicing short activities of 100-200m has affected by physiological variables for research sample .Practicing medium activities of 400-800m has relation with biochemical and physiological variables among samples .Finding relationship between short and medium activities of research variables .