التوزيع النسبي لمعدل تنامي القوة في الزمن لبعض التمرينات النوعية لأداء الضربة الساحقة بوجه المضرب في تنس الطاولة

الملخص EN

The purpose of this study is to classify some of the qualitative exercise training during the hit phase of smash forehand based on force rate development.

Two high-level tennis player (age 22.5 ± 71, height 173.4 ± 4.24, weight 73 ± 1.41).

High-speed camera Fastec Inline cam 125 F/s used to capture the skill and divide the performance phases.

BeanAir 3DS wireless accelerometer 1000 Hz placed on the hitting hand to record acceleration in three axes (x, y, z).

SIGVIEW was used to process and filter the signal using the smoothing moving average 175.

To Obtain the force, values multiplied by the arm mass according to the equation F = ma the power values are extracted directly.

The exercise can be used with free weights from the fourth exercise to the seventh exercise at the beginning of the training season.

While the weight exercises can be used according to the relative mass of body segment at the end of the training season.

Because they are closer to the performance of skill, to have a real sense.

Therefore, these exercises can be arranged according to the rate of force development as follows: Frist exercise no.

(5), second exercise no.

(7), third exercise no.

(6), Fourth Exercise No.

4, fifth exercise no.

(2), the Sixth exercise no.

(1), and the seventh exercise no.

(3).