Fatahi A, Yousefian Molla R, Ameli M. Block Jump Height Assessment Based on Kinetic Approach in Volleyball Players: Is There any Difference Between Methods?. PTJ 2021; 11 (4) :209-216
URL:
http://ptj.uswr.ac.ir/article-1-494-en.html
1- Department of Sports Biomechanics, Faculty of Physical Education and Sports Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
2- Department of Physical Education and Sport Sciences, Payam-e-Noor University, Tehran, Iran.
Abstract: (2411 Views)
Purpose: Various kinematics and kinetics methods have been proposed for the assessment of jumping ability as a critical skill in professional volleyball players, but little is known about the accuracy and differences between these methods. Therefore, the objective of the current study was to answer the question “Is there any difference between the results of various kinetic methods in the assessment of block jump height in volleyball players or not?”
Methods: Twenty-one healthy male junior volleyball players of the Iran national team performed the block jump task on a force platform. Three common formulas mostly used in literature based on kinetics output of force platform were selected for the comparison of resultant jump height. Descriptive analysis, Shapiro-Wilk test, and ANOVA were used for statistical calculations (p<0.05).
Results: The results showed no significant difference between the means of block jump heights measured based on different kinetic methods in volleyball players.
Conclusion: Formula calculation methods are very valid for measuring the jump height of the block jump and lead to very similar results for estimating jump height and are also replaceable with each other.
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● Accuracy of jumping assessment.
● Presenting a new method to calculate jumping height regarding kinetics approach.
● A comparison of different biomechanical methods in calculation.
Plain Language Summary
Vertical jump ability is a critical physical component to success in volleyball, allowing a competitive advantage in attack as well as defense. It is important for volleyball players to reach the maximum height above the net, specifically in attacking and blocking techniques. The height of vertical jump during a block jump reports the potential of reduction in effectiveness of the attacking opponent. many anthropometrical, physiological and kinematical parameters can influence jump height, but kinetic variables have critical effect on this characteristic.
Type of Study:
Research |
Subject:
General Received: 2021/01/30 | Accepted: 2021/08/14 | Published: 2021/10/1