Doctoral thesis by researcher/Osama Mr. Tamam Mahmoud, assistant teacher, sports training and movement Sciences, entitled "Analytical study the dynamic variables of diving skill on the two men as a basis for designing a training device for free wrestling players" under a supervision. Dr. Ibrahim Mohammed According to God, Professor of Manufacturing Engineering, Department of Mechanical Engineering, Faculty of Engineering, Assiut University, WA. Dr. Tarek Farouk Abdel Samad, professor of mechanical mechanics and head of the Sports Training and Movement Sciences department, Faculty of Physical Education, Assiut University, WA. M. Saleh Abduljair Abdel Hafez assistant professor in department Sports training and the science of movement Sports training in the Faculty of Physical Education, Assiut University, on Monday 8/1/2018