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The Effect of Pliometric Training Knee Tuck Jump and Jump To Box on the Jump Height of Volleyball Athletes

Introduction

The effect of pliometric training knee tuck jump and jump to box on the jump height of volleyball athletes. Discover the effect of plyometric knee tuck jump and jump to box training on volleyball athletes' jump height. Both methods improve strength, but jump to box is more effective.

Abstract

The purpose of this study was conducted to determine the effect of plyometric knee tuck jump and Jump to box training on the jump height of volleyball athletes. This study uses an experimental method with a two group pretest posttest design. The population in this study were 35 PBV.Kapila Tanjungpinang male volleyball athletes using probability sampling technique in determining the number of samples so that a sample of 30 people was obtained. The instrument in this study used the vertical jump test. The data analysis technique uses a hypothesis test (t-test) to determine the difference in the effect of pretest and posttest. The results of the research showed 1) In the knee tuck jump training group on jump height has a significant effect (P < 0.05). This can be proven that the average value of the post test is higher than the average value of the pre test or (μA1 37.20 < μA2 45.87) with a difference of 8.65. 2) In the jump to box training group on jump height has a significant effect (P < 0.05). This can be proven that the average value of the post test is higher than the average value of the pre test or (μA1 35.20 < μA2 55.87) with a difference of 20.67. 3). In the knee tuck jump and jump to box training groups on jump height there is a significant difference in influence (P < 0.05). This can be proven that the average value of the post test of the jump to box training group obtained an average value of 55.87 is greater than the average value of the knee tuck jump training group 45.87 (μB2 55.87 ≥ μA2 45.87) with a difference of 10. Based on the research findings, it can be concluded that knee tuck jump training and jump to box training, have a significant and positive effect on leg muscle strength in PBV.Kapila Tanjungpinang volleyball athletes. Although both show a significant positive effect, jump to box training is more effective in increasing leg muscle strength compared to knee tuck jump training.

Review

This study aimed to investigate the effects of two plyometric training methods, knee tuck jump and jump to box, on the jump height of male volleyball athletes. Utilizing an experimental pretest-posttest design with two groups, the researchers recruited 30 athletes from PBV.Kapila Tanjungpinang. The vertical jump test served as the primary instrument, with data analyzed using t-tests. The findings indicate that both training protocols significantly improved jump height, with the jump to box method demonstrating a greater positive effect compared to the knee tuck jump. The research addresses a relevant practical question for coaches and athletes seeking to enhance explosive power, and the general conclusion that plyometrics can improve jump height is consistent with existing literature. It's also worth noting the typo in the title, "Pliometric" should be "Plyometric." While the study presents potentially useful insights, several methodological details require greater clarity and reporting. A significant omission is the complete lack of information regarding the duration, frequency, intensity, and specific volume (sets, repetitions) of the plyometric training interventions. This makes it impossible for other researchers or coaches to replicate the study or apply the findings effectively. Furthermore, while a "two group pretest posttest design" is stated, it's unclear if these were independent groups receiving different interventions, and if so, how participants were allocated (e.g., through randomization). The sample size of 30 for two groups suggests only 15 participants per group, which may limit the statistical power and generalizability of the findings. Additionally, the units for jump height measurements are not specified, and the statistical reporting is minimal, lacking t-values, degrees of freedom, or effect sizes that would provide a more complete picture of the observed differences. The conclusion's reference to "leg muscle strength" also appears to be a misstatement, as the measured outcome was jump height, which is more accurately described as an indicator of explosive power. In conclusion, this study offers preliminary evidence supporting the effectiveness of knee tuck jump and jump to box training for improving jump height in volleyball athletes, with the latter showing a superior outcome. However, to enhance its scientific rigor and practical utility, future research should incorporate a detailed description of the training protocols, clearly outline group allocation procedures (including randomization if applicable), provide comprehensive statistical reporting, and maintain consistent terminology between measured variables and conclusions. Addressing these points would significantly strengthen the validity and applicability of the findings for both the scientific community and athletic practitioners.

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