دراسة نسبة مساهمة زخم بعض أجزاء الجسم بكمية الحركة في مرحلة الارتقاء لدى واثبي الطويل دون 20 سنة

الملخص EN

The importance of the research lies in airborne phase.

The problem of the research lies in identifying the contribution percentage of body parts in movement amount in airborne phase.

The aim of the research was in identifying momentum contribution percentage on body parts in movement amount during airborne phase.

The researcher filmed jumpers using video camera (120 frame / sec) to get the variables of the research.

The subjects were (10) jumpers from the national center for gifted athletics/ ministry of youth and sports.

All members were male long jumpers U20.

The results showed great contribution percentage in angular momentums of legs, torso and thighs.