Abstract
The importance of this study lies in the fact that and the lack of study on the active game of volleyball-related to physiology Attention must be given to some physical exercises and skill of that depend on the energy system anaerobic because of their influence in the work of enzymes and the speed decomposition glucose to reconfigure the energy sources of chemical compounds in the muscle cell contraction to perform movements and rapid responses fit as required skills defense in volleyball.After completion the same tests applied on (20) players of Volleyball from Anbar city, for developming that play.
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