The Effect of Using the Rotation Device Modified in the Drag and Resistance Styles on the Level of Some Kinematical and Functional Variables and the Numerical Achievement for the Hammer Throw Event

Research Objective : Recognizing the effect of using the modified turn device with the pull and resistance styles on some of the kinematical, skillful and physical variables, and the indicators of the functional efficiency and the numerical level of the hammer throwing event. Research Hypotheses : 1. The suggested training programme positively affects the variables under study of the experimental and control groups. 2. Using the modified turn device with the pull and resistance styles positively affects some of the kinematical, skillful and physical variables of the junior players of the hammer throw competition 3. Using the modified turn device with the pull and resistance styles positively affects some of the functional efficiency and digital achievement of the junior players of the hammer throwing event Study Procedure : The two researchers used the experimental approach with the experimental design of two groups, an experimental group and a control one (( the experimental group ( using turn device of pull and resistance styles) – the control group ( traditional style)) with applying the measurements ( pre – post ) of the two groups.