"تأثير برنامج تدريبي باستخدام استراتيجية السرعة على المستوى الرقمي لسباحي المسافات المتوسطة ".

The research aims to design a training program using a speed change strategy and identify: - Its effect on some physical variables for middle-distance swimmers. - Its impact on the digital level of middle-distance swimmers. The experimental method was used by applying pre- and post-measurements to two groups, one experimental and the other a control group of junior swimming players. The research population consisted of junior swimming players enrolled in the private academy, inside the Cleopatra Park swimming pool in Matrouh Governorate. The research sample was chosen intentionally from junior swimming players enrolled in the private academy from the stage Age: 14-16 years, The total population of the selected sample was 18 emerging players, including 8 individuals for the exploratory study and 10 individuals for the basic study, divided into two experimental and control groups who met the conditions for selecting the sample. The researcher concluded the following: - A strategy of changing speed works to improve the physical abilities of budding swimmers. - A speed change strategy that improves the digital level of middle-distance swimming among emerging swimmers. - Speed change strategy allows control of swimming rhythm and sense of time. -The strategy of changing speed is appropriate to the nature of competition in middle-distance swimming among juniors. [ABSTRACT FROM AUTHOR]