بعض المتغيرات البايوميكانيكية وعلاقتها بالدقة لمهارتي الضربة الامامية والخلفية بالتنس للطلاب
Abstract: The use of various exercises and the involvement of sports equipment and tools in raising the bio-kinetic capabilities and capabilities had a positive and economic impact on improving the athlete’s efficiency to reach higher levels. It is related to learning and training as it diagnoses and compares movements because it adopts accurate measurement to show the technical details of performance in its proper form