The relative contribution of the electrical activity of the muscles of the upper extremity to the performance of the backhand drop shot of the badminton players on the wheelchairs

The study aims to identify the most important muscles of the upper limb that contribute to the performance of the backhand kick of the badminton players on wheelchairs. The researcher used the descriptive approach. The sample of the research was chosen in a deliberate way from the Egyptian badminton team players for wheelchairs, and their number was (6) players of the category (Wh2). ), the study was conducted in the covered hall in Helwan Youth Center, the data were collected using an electromyograph to measure the percentage of electrical activity, the following conclusions were reached. The basic of the back projectile kick, (the three-headed brachii muscle, followed by the wrist extensor muscle of the striking arm - followed by the right biceps brachii muscle) had the highest percentage of contribution to the entire skill of the back projectile, so the researcher recommends taking advantage of the order of muscular activity in codifying and building training programs According to the percentages of the contribution of the working muscles to improve the performance of the backhand drop shot of the badminton players on the wheelchair , it is necessary to pay attention to training the muscles working on the arm and corresponding to it more than the muscles working on the torso in performing the backhand drop shot.