تقويم الأداء الحركي على وفق المتغيرات الميكانيكية للضربة الأرضية بيد واحدة في التنس لعدد من لاعبي أبطال العالم

الملخص EN

The aim of the research is to identify the values of a number of biokinetic variables for the one-handed backhand in two different positions in tennis.

recognizing the differences between a number of kinematic variables of the background strike with one hand from two different positions (near and far) evaluating the performance of a number of kinematic variables of the background strike with one hand from two different positions (near and far).

8 / 2021 to 9 / 20 / 2021: spatial: the world tennis championships for the world’s rankings in 2019: human: professional and world-ranked tennis players for the year 2019.

therefore, the researchers used the qualitative (qualitative) approach for its relevance and the nature of the research.

after the analysis and statistical treatment and the results were tabulated, the researchers concluded the following: there are significant differences between the near and far situations, as well as between the statistical evaluation of both movements.

recording world championships.

emphasis on tennis coaches and teachers, especially in the offensive and defensive skills, by hitting the ball while it is far from the body in order to increase the speed of the ball and put pressure on the opposing player in order to get a point.

adopting the performance evaluation of the players from time to time according to the mechanical analysis.