علاقة بعض المتغيرات الكينماتيكية في وضع الدفع لمراحل الوثب مع القوة الانفجارية للرجلين بفعالية الوثبة الثلاثية

الملخص EN

This research aims at recognizing: .

The values of the explosive force of the legs for the research sample - - The values of some kinematical variables in the activity of the triple jump in the pushing position of the jumping stages ( hop, step and jump) for the individuals of the research sample .

- The relationship between some kinematical variables in the activity of the triple jump in the pushing position of the jumping stages ( hop, step and jump) with the explosive force of the legs for the individuals of the research sample .

The research sample included four racers selected intentionally who represent the jumping champions in technique and achievement from all stages of the college of sport education / university of Mosul in the activity of the triple jump ( semester 2012-2013) .

The data were collected via the video filming by using a camera ( its speed is 25 pictures/second ).

Then, the film was transformed to a CD after segmenting the movement required to be analyzed from the film by adopting the program (Heroo Soft 2001) .

Next, the researcher analyzed by using (Auto Cad 2010) .

The researcher used the program (Acd See 2011) to display the images.

To obtain the values and the research results , The researcher used the following statistical processes ( arithmetic mean, standard deviation, coefficient of variance, and the simple correlation coefficient) by using SPSS program.

The researcher has concluded the following: .

The research results showed the extent of importance of ankle angle of the raising leg and the knee angle of the free leg in determining the height and lowness of the centre of gravity of the body mass in addition to the angle of the trunk , the knee angle of the raising leg, and the angle of the free leg in the pushing position at the (hop, step, and jump) stage.

2.Preserving in generating the explosive force of the legs improved the angle of arising and the flight angle which are considered the most important variable among the research variables to achieve the best achievement in hop, step, and jump in the triple jumping activity.

3.The raising angle had a great important effect in determining the flight angle in the pushing position of the various jumping stages in the activity of the triple jump to pass the greatest possible distance in hop, step and jump for the sample.

4.The variable of the centre of gravity of the body mass and the radius has the effective role in determining the value of the angular velocity , the peripheral body speed in the pushing position for each of (hop, step and jump) that depended on the amount of the explosive force values for the legs in determining its positive values in the triple jump for the research sample.