An evaluative study of the electrical activity of the muscles working in the crushing skill as a basis for developing specific exercises for female volleyball players of the national team

First: Research MethodologyThe researcher used the experimental method for one experimental group due to its suitability to the nature of the research. Using electrolysis, the researcher also used the descriptive approach.Second: Research CommunityThe research community included volleyball players from the first-class team of Al-Shams Club (Premier League, Section A), who are registered in the Egyptian Volleyball Federation for the 20 season21/2022Third: Research SampleThe research sample was tested in a deliberate way between volleyball players from the first-class team of Al-Shams Club (Premier League, Section A), who are registered in the Egyptian Volleyball Federation for the 20-21/2022 season. The number of members of the research sample (20) players was distributed as follows:1- Number of players participating in the exploratory studies:- (10) players stage excellent (a) Sun Club .2- The number of emerging basic sample:- (10) juniors for the experimental group (qualitative training).