تأثير تمرينات المرونة الخاصة باستخدام الفوم رولنج في تطوير بعض المتغيرات البدنية و المستوى الرقمي لسباحي الحرة

الملخص EN

The research aims to identify the effect of flexibility exercises using foam rolling in developing some physical variables and the digital level of freestyle swimmers.

the researcher used the experimental approach using the experimental design for one group using the pre and post measurement method on a sample of (13) freestyle swimmers at Tanta sports club under 19 years old who are registered by the Egyptian swimming federation, and the researcher measured some physical variables - under research-and the digital level 25 m it is free and the following statistical coefficients were used : the arithmetic mean-the standard deviation-the torsion coefficient - the value of (v)-the percentage of improvement % the most important conclusions : the program of flexibility exercises using foam rolling, which was applied to the research sample, has a positive effect on the development of some physical variables-under study-(speed endurance, transitional speed, maximum speed, maximum strength of the arms, power for the legs, strength endurance for the arms, flexibility of the shoulder flexion, extension, flexibility of the spine flexion and extension, flexibility of the knee flexion, flexibility of the foot flexion and extension)-under research-for freestyle swimmers.

the program of flexibility exercises using foam rolling has a positive effect on the digital level of the freestyle swimmers - the research sample.