Dependence of sports result in javelin throwing on the kinematic parameters in the moment projectile release

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PhD E.S. Ketlerova1
PhD, Associate Professor E.Ya. Gridasova1
1Russian University Sport (SCOLIPE), Moscow

Keywords: javelin throwing, kinematic characteristics, projectile departure speed, departure angle, angle of attack.

Introduction. As you know, the range of the spear depends more on the velocity of the projectile, the angle of departure of the projectile and the angle of attack. The analysis of the relationship between the competitive result and the kinematic indicators of the javelin throwing technique of highly qualified athletes will allow us to determine further ways to improve the technical skills of the javelin throwers.
The purpose of the study is to identify the dependence of the sports result on the kinematic parameters of the javelin throwing technique of highly qualified athletes.
Methodology and organization of the study. The study analyzed data from the biomechanical report on the women's javelin throw at the 2017 World Athletics Championships. Correlation (Pearson) and regression analysis were used to study the relationship between the result in javelin throwing and the kinematic characteristics of the projectile at the time of departure. The study analyzed the results of the finalists of the championship in javelin throwing.
The results of the study and their discussion. The study revealed the strongest reliable relationship between the results of elite athletes and the projectile departure rate (r = 0.7) (see figure).
A weak negative relationship turned out to be with the angle of departure of the projectile (r = -0.02) and a strongly negative relationship with the angle of attack (r = -0.61) (see figure). This indicates that in these conditions, other kinematic indicators had a greater influence on the competitive result.
Conclusion. As a result of the study, it was found that the projectile ejection rate is the only kinematic parameter that has a statistically significant effect on the sports result in javelin throwing among highly qualified athletes.

References

  1. Bennett T. Women's Javelin throw – 2017 IAAF World Championships Biomechanical report / T. Bennett, J. Walker, A. Bissas, S. Merlino // IAAF.