The Effectiveness of Specific Training Models on Increasing the Accuracy and Strength of the Jump Serve in Junior Volleyball Athletes

Bujang Bujang, Aridhotul Haqiyyah, Mia Kusumawati, Hasan Basri, Azi Faiz Ridlo, Tatang Iskandar, Tian Kurniawan, Iwa Ikhwan Hidayat

Abstract


This study aims to determine the effectiveness of specific training models in improving the accuracy and strength of jump serves in junior volleyball athletes. The study employed a quasi-experimental design with a pretest-posttest control group approach. A total of 30 athletes, aged 14–16, were divided into two groups: an experimental group and a control group. The experimental group underwent a specific training program three times per week for six weeks, with each session lasting 60 minutes. The instruments used included expert-validated jump serve accuracy and power tests. Paired sample t-test results revealed significant improvements in accuracy (t = 12.45, p < 0.001) and strength (t = 10.87, p < 0.001) in the experimental group. In contrast, the control group showed no significant improvement in either variable. An independent-sample t-test revealed a significant difference between the two groups after the training period (p < 0.05), which was supported by a large effect size (Cohen's d > 2). These results demonstrate that targeted training effectively enhances jump serve accuracy and power. Structured, functional, movement-based training tailored to athletes' needs has been shown to positively impact junior volleyball athletes' serving performance.

Keywords: accuracy, junior athletes, jump serve, strength, specific training.


Keywords


accuracy; junior athletes; jump serve; strength; specific training.

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DOI: https://doi.org/10.17509/jtikor.v10i1.84482

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