القوة الانفجارية لعضلات الاطراف السفلى و علاقتها ببعض المتغيرات الكينماتيكية لمهارة الارسال الساحق

Abstract EN

The researcher used the descriptive method.

The aim of the research was to identify the relationship between the explosive power of leg muscles and some basic parts to execute spike in volleyball.

The hypothesis of the study was there is a statiscal relationship between the variables of the study.

The subjects wewe (20) first class volleyball players.

After conducting the tests, the results were treated statiscally, (using median, standard deviation and correlations between the explosive power of the legs and the basic parts of spiking).

The researcher concluded that: • There is a statistical relationship in all variables of the study.

Then he recommended the following: • The necessity of using scientific styles in training explosive power and in developing physical fitness programs that suit the level of the team.

• Making similar studies that study the relationship between the explosive power of the arms and trunk muscles as well as the legs to identify the relationship among these muscles and their effect on spiking.