الملخص

         The importance of the research lies in adopting a modern training method that benefits the stiffness of the body. Modern exercises have been followed to increase the strength of the core muscle and the most important physical abilities of handball players. The research aims to: 1. Prepare exercises for physical stiffness that are compatible with the capabilities of the research sample. 2. Identify the effect of physical stiffness exercises on some of the physical abilities of the research sample.          The experimental design was used, and the research sample was chosen from the players of the College of Basic Education team handball for the academic year (2019-2020) at the age of (18-20) years. The results revealed that physical strength exercises, represented by (deep training and functional exercises) have helped in the development of physical abilities, and it was recommended to adopt training according to the method of physical stiffness, as it is compatible with the performance nature of the effectiveness of handball and according to what the law allows in friction and assertive behaviour.