Harry Pramono, FIK PJKR (2023) The Effect of Plyometrics Exercise through Agility Ladder Drill on Improving Physical Abilities of 13–15-Year-Old Volleyball Players. Physical Education Theory and Methodology, 23 (2). ISSN 1993-7989

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Abstract

Study purpose. The purpose of this study was to test the plyometrics training method through agility ladder drills to increase leg muscle power, agility, and aerobic endurance in 13-15-year-old volleyball players. Materials and methods. The research method used was an experiment with a one-group pretest-posttest and pretest-posttest control group approach. The participants were 30 male volleyball players weighing 57-67 kilograms and 157-170 cm in height. Vertical jump, agility t-test, and multistage fitness test were used in this study. Data gathering methods included observation and tests, while data analysis methods included descriptive analysis, Wilcoxon, and Mann-Whitney nonparametric analysis. Results. Descriptive data revealed a difference in the mean value of the pretest and posttest of the experimental group. Furthermore, it also showed a difference in the mean value of the experimental and control groups. In the Wilcoxon test, the value of Asymp. sig(2-tailed) was 0.006<0.05, agility was 0.001<0.05, and endurance was 0.001<0.05. In the Mann-Whitney test, the value of Asymp. sig(2-tailed) was 0.416>0.05, agility was 0.00<0.05, and endurance was 0.00<0.05. Conclusions. In the experimental group, the posttest score is higher than the pretest score on power, agility, and endurance. In volleyball players aged 13-15 years, there is a significant effect, with the experimental group outperforming the control group in terms of power, agility, and endurance. As a result, one of the recommended exercises for young volleyball players is the plyometrics training method using an agility ladder drill.

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