النشاط الكهربائي لبعض العضلات العاملة للأطراف السفلى و علاقتها بدقة مهارة الضربة الساحق للريشة الطائرة للطلاب

Abstract EN

The game of badminton requires physical and skill preparation in order to reach the desired level, because of its speed of movement, rebound, rapid mobility, and maintaining the strength of performance throughout the playing period to achieve victory as required by the requirements of competition.

Since the field of measuring electrical activity (electromyography) (EMG) provides the possibility of measuring the force of contraction of the working muscles, which helps to identify the true level of muscle contraction force at each stage of the technical performance of the special skill of the crushing blow of the feather, which is one of the offensive skills, Mastering it by the players helps in scoring points and settling the outcome of the match in their favor, but some coaches and players do not focus on the effectiveness of muscle activity, and the appropriate amount of energy to perform the effort despite its importance.

The aim of the research is to identify the electrical activity values of the rectus femoral muscles and twins of the badminton players of Al-Mustaqbal University College when performing the crushing blow and its relationship to the accuracy of their skill performance.

The descriptive approach was used using the correlational method on the research sample of four during the academic year 2018-2019, after presenting and discussing the results, the following conclusions were reached : 1.

There is a correlation between the electrical activities of the rectus femoris with the accuracy of the crushing blow prior to the stroke stage.

2.There is no correlation between the electrical activity of the twin muscle and the accuracy of the crushing blow, but rather helped in the balance and transfer of power in the research sample only.

3.There is an effect of the integrated muscle activity in the kinetic transmission of the passing force of the crushing beating of badminton players.

Through the conclusions the researcher recommended : 1.The necessity of training and making efforts by badminton players to activate the muscles working in performance at every stage of its stages.

2.Using electrical activity and measuring the amount of energy appropriate for the performance of badminton players due to its importance in achieving the required achievements.