doi no.: 05-2016-44975451, DOI Link :: http://doi-ds.org/doilink/12.2019-21132359/

Samson Wondirad¹, Amanu Eba² and Asim Khan³

Affiliations

1. Assistant Professor, Department of Sport Science, College of Natural Science, Jimma University, Jimma, Ethiopia
2. Lecturer, Department of Sport Science, College of Natural Science, Jimma University, Jimma, Ethiopia
3. Assistant Professor, Department of Sport Science, College of Natural Science, Jimma University, Jimma, Ethiopia

ABSTRACT

Ethiopia is the potential area in order to produce world class long jumpers. However, intensive work has been never done on the area of biomechanics. Thus, this study was designed to assess the Biomechanics analysis of long jumpers’ on Oromia region athletic clubs. For the purpose of this study 20 long jumpers from six clubs (Burayu, Lagatafo, Sululta, Sebeta, Adama and Bishoftu) were selected as the subject. To acquire the kinematical data one high speed Nikon: Coolpix P900 video recording camera mounted at a height of 5 feet was placed 10 meters away perpendicular to the long jump pit.  All subjects were performed three jumps, all the jump performances were recorded and downloaded in the personal computer and only best performance of each subject was selected for further analysis. The digitization of the obtained data was done with the help of Kinovea motion analysis software. The kinematical variables for the study were taken as ankle, knee, shoulder and elbow joints angle. All statistical procedures were conducted using the SPSS 23.0 Version software. A level of significance was set at 0.05. Pearson product moment correlation coefficient was used to find-out the relationship between long jumpers’ seasonal best performance and joint angles in different phases. Multiple regressions coefficient was used to analyze the effect of release parameters angles at release during take-off on jumping distance. The result of this study shows that Knee joint angle has significant relationship with the performance at take-off preparation (r = -0.67, p<0.05) and Take-off phase (r = -0.53, P< 0.05. Knee angle during take-off preparation phase and take off phase explained by 67.6% of variance (R²=.676, F(18, 2.72) =, 15.1, p < 0.05). Effect size of long jump take-off preparation knee angle was significant (R²=.676, F (18, 2.72) =, 15.1, Beta value (B) = -0.016, p < 0.05) and take off phase (R²=.676, F (18, 2.72) =, 15.1,Beta value (B) = -0.014, p < 0.05). on the basis of the findings of this study it is concluded that both phases (take-off preparation and take-off), knee joint angle has low effect size on long jumpers’ seasonal performances.

Key words: Biomechanics, Joints Angles, kinematics and Long Jumpers.

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