“The Effect of Different Loads on Vertical Jump Performance Using a Weighted Vest in Female Volleyball Players”
Power training is essential in most sports, such as football, basketball, CrossFit and others. Numerous studies have been conducted to identify the optimal load at which athletes produce the greatest power in the vertical jump. A study was conducted on female volleyball players, in which researchers measured power output during the vertical jump using a weighted vest. Using a weighted vest is a highly practical and convenient training tool.
The purpose of the study was to determine the optimal load that maximizes power output in female volleyball players using a resistance vest. Adult A1-category female volleyball players were assessed in the countermovement jump with arm swing (CMJH) (n=16) and the squat jump (SJ) (n=15) while wearing a resistance vest loaded at 0, 10, 20, 30, 40 and 50% of their body mass (BM). The variables assessed were peak power, peak force, peak velocity and jump height. The results of this study showed that the optimal load for producing peak power in both jumps was 10% BM.
Results:
Peak power output in the vertical Squat Jump
Peak power output in the vertical CMJ
In conclusion, the optimal load for producing peak power with a resistance vest in high-level female volleyball players is an external resistance of 10% BM for both the SJ and CMJH.
Keywords: power training, resistance vest, volleyball, load determination.
Author: Kyriaki Mitrou MSC



