Effect of using a hard phase on Some Biokinmatics Variables and the level of digital achievement for discus throwing Racers

The aim of the research is to identify the use of the fixed disposal device affection on some Biokinmatics and the level of digital achievement variables for Discus throw candidates. The experimental method was used, and the sample of the research was chosen in a deliberate manner by the participants of the Mansoura Sports Stadium. The number of participants was 10 participants in the Egyptian Athletics Federation, they were divided into two groups, one experimental and the other was a standard. The training of using the fixed disposal device was applied to the research sample through a training program for the competition and during the skill preparation part for ٠١ weeks with ٤ training units each week. After completing the exercises using the fixed disposal device, conducting kinetic analysis to identify the effect of the use of the fixed disposal device on some Biokinmatics variables for Discus throw. The most important results were that the use of the fixed disposal device contributed to the improvement of some Biokinmatics and digital variables in the disc throw competition. The most important recommendations were the use of a fixed disposal device in the performance of the disposal exercises of the disc throw competition, the use of the fixed disposal device during the teaching and training of the initiators of the phase of disposal in the disc throw competition.