Contextually optimization and for the enlargement of the efficiency training the players for the game of defense needs as this to is reflective and structure on the strength of the act of model, in which find a logical relation between strategists, objectives, contained and evaluation. We can assert that in the current volleyball the preparation for defense is a major preoccupation specialists, and contained this is found out in a permanent evolution and perfecting. In this research we aimed to establish the training objectives of junior national team in the game to increase efficiency and adapt their teaching methods, methodological processes, operating systems and evaluate activities play in terms of effective competition Research hypotheses 1. Players specialize in playing at the net, may be more effective in making the jam, but this does not ensure effective defense of all actions, based on service and taking the attack, structural relationship with attack actions - service, setting and attack; 2. Only by applying structural methods and specific action game in attack and defense, connected to the line players I and II, could lead to increased efficiency in the game, considering that the actions of defense are critical the achievement points. Research Methods: The method of study bibliographic; the method observation; the method analogy and modeling; experimental method; recording method specific effectiveness of the game; statistical and mathematical method; the graphic method. Data processing method Thus the result of each action is evaluated using a scale of 4-5 degrees, depending on the action of defense, in connection with the attack, based on the effect on the score or control the ball by the team after playing the ball or the opponent (1992, Manual for Statistical Games Record. FIVB). The assessment was made as follows: . As - 4 - point win; . Excellent - 3 - gained full control, maintained; . Good - 2 - gained limited control limitat, maintained; . Insufficient - 1 - lost control, no control; . Wrong - 0 - lost point. Conclusions In summary, the actions of defense, the major objective in our research are relevant to the amendment that is appropriate for volleyball athletes to specialize on positions and field team
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