دراسة القوة العمودية لمرحلة النهوض و علاقتها بمستوى الإنجاز لدى لاعبي الوثب الطويل

الملخص EN

Research problem the impact of the amount of vertical force to reach the maximum possible completion, and the extent of the contribution of the force from the moment of his feet touching the platform to power the moment of leaving it to achieve the best achievement in the effectiveness of the long jump .

The current research aims at: 1.

Identifying the vertical force stages (bumped, absorption, pay) and their relationship to the level of achievement at the effectiveness of the long jump .

2.

Identifying the vertical force to achieve maximum effectiveness of achievement in the long jump and the extent of benefit from them.

3.

Identifying force function form – time through rising stage in long jumping activity.

The researcher used the descriptive procedure for being familiar with the research.

The research sample consists of (5) jumping players represent Nineveh.

The researcher used the digital photographing to achieve the technical scientific notice, by using a digital camera type (Sony Digital) made in Japan, where the camera was located 5 m on the right of the player and the lens was located 1 m of sea level to identify the values of the biomechanical variables of the player.

Photographing speed was (300) zoom (36mm).

To solve the research problem which requires to save the (force – time) curve of rising stage of long jumping activity which is made by the reacting force measurement platform with its distribution characteristics along the performance displacement, where this platform was made through cooperation with a number of specialized electronic engineers, where it was made according to the international standards and according to the desired measured state.

Land reacting force measurement platform with dimensions (120m) width (120m) height (2cm) has a capacity to measure the force to more than (5000 Newton) and it works by laptop, where it is connected by USB.

Digital photographing was made and land reacting force measurement platform was registered in one time and for all attempts, a special form was prepared to write down all attempts made by one of the work team members which contains the jumper's name, his number and his attempt so as to distinguish it from others through analysis, also they were saved in computer so as to distinguish forms of curves and values of the desired characteristics after tabulating them.

The researcher used a number of programs to analyze the best attempts and for all the research sample individuals, and they are as follows, AutoCAD 2014, Excel 2010, Word 2010.

Data were analyzed statistically by using arithmetic mean, standard deviation and simple (Pearson's) correlation coefficient, where the researcher used Minitab5.

The researcher concluded the following: 1.

Force path of the players did not move regularly but it moves according to the effect of the body weight and the body move during rising stage and this led vibrations.

2.

Adding a new stage to the players force path (force function curve – time) leaving stage, where the payers force path was divided into four stages (crashing, absorption, pushing and leaving).

3.

There is a negative immaterial correlation among the lowest land reacting force in the absorption and the achievement stage.