لخّصلي

The research aims to identify the effect of using a water bag on the level of (dynamic balance) for the handball junior under study and the level of (defensive movements) for the handball junior under study, according to the nature of the research problem and to achieve its goals and test its hypotheses, the researchers followed the experimental method using the experimental design for one group by following the pre- and post-measurement of the sample under study.The percentage improvement rates between the pre- and post-measurements for the group using water bag training ranged between (19.49%: 24.95%), which indicates the effect of the program based on using water bag training in improving the physical and skill variables for the group using water bag training.

The research aims to identify the effect of using a water bag on the level of (dynamic balance) for the handball junior under study and the level of (defensive movements) for the handball junior under study, according to the nature of the research problem and to achieve its goals and test its hypotheses, the researchers followed the experimental method using the experimental design for one group by following the pre- and post-measurement of the sample under study. The research sample is represented by the intentional method from the juniors of the Mallawi Sports Club team, and the sample consists of (10) ten players registered with the Egyptian Handball Federation for the sports season 2024-2025 AD, and the proposed training program consists of (70) training for the upper and lower limb with the hands, 30 training with the hands, 20 training with one hand from, 20 skill training with one hand and two hands from, and the duration of the program was determined to be (12) weeks at a rate of (5) training units per week, and one training unit per day with a duration of (90 minutes), and in light of the objectives of the research and its hypotheses and within the limits of the research sample and its procedures Based on statistical treatments, the researchers concluded that the training program prepared using water bag training was effective in improving the motor abilities under investigation on some physical variables (dynamic balance) and some skill variables (defensive movements) for the handball players under investigation. The percentage improvement rates between the pre- and post-measurements for the group using water bag training ranged between (19.49%: 24.95%), which indicates the effect of the program based on using water bag training in improving the physical and skill variables for the group using water bag training.