Prediction of Achievement in Terms of Kinematic Measurements of the Triple Jump Juniors

Abstract

The study aimed to predict achievement through the contribution of some kinematic measurements of the triple jump juniors. The descriptive approach was used for a sample of (9) players participating in the Independence Tournament, in its eighteenth round, held by the School Sports Federation affiliated to the Ministry of Education, with an average age of (17.3 years). Their average achievement is (11.51m). With a Sony digital video camera whose frequency is 50 images/second, the values of the kinematic variables were measured: the speed of the center of gravity in the last step of the approach, the sum of the speed of the center of gravity at the moment of ascent in the hopscotch, the angle of the center of gravity at the moment of ascent in the hopscotch, the distance of the horizontal hopscotch, the resultant velocity of the center of gravity at the moment of ascent in the step, and the angle of the center of gravity at the moment of ascent in stride, horizontal stride distance, net center of gravity velocity at the moment of take-up in the jump, angle of the center of gravity at the moment of take-up in the jump, horizontal jump distance, legal triple jump distance, and actual triple jump distance.  Arithmetic means, standard deviations, percentages, skewness coefficient, and multiple statistical linear regression analysis were used. Of the study results is that an equation for predicting the contribution to the actual triple jump distance can be determined as follows: The resultant speed of the center of gravity in the last step of the approach contributes 31.8%, the resultant speed of the center of gravity at the moment of take-off in the jump contributes 23.1%, the hopscotch distance contributes 15.9%. and the jump distance contributes 12%.The researchers recommended investing and developing the kinematic measurements of the junior triple jumpers to improve the level of achievement.