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Lookup NU author(s): Dr Javad SarvestanORCiD
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Background: The importance of vertical jumps has been extensively recognised in sports. Furthermore, the main indicator of success in vertical jumps is the attained height, however, there is lack of knowledge on how the eccentric and concentric force–time curve variables affect the jump height. Objective: The objective of this study was to assess the relationships between eccentric and concentric variables of the force–time curve and jump height in youth volleyball players. Methods: Twelve elite volleyball players (male, Iranian national youth volleyball players, 17±0.7 years) have participated in this study. The correlations between the force–time variables, including the peak force, relative peak force, peak power, average power, relative peak power, peak velocity, and modified reactive strength index, of the eccentric and concentric phases and jump height have been assessed based on Pearson’s correlation coefficient. Results: Results showed that the average power (r=0.7, p=0.034), relative peak power (r=0.75, p=0.029) and peak velocity (r=0.98, p=0.004) of the concentricphase and modified reactive strength index (r=0.83, p=0.014) significantly correlated with the jump height. Conclusion: relative peak power and average power of the concentric phase are shown to affect jump height in young volleyball players, whereby the vertical jump is their integral part. Based on the study’s outcomes, conditioning coaches are advised to emphasise the development of relative and maximal powers in specific and individualised training program.
Author(s): Sarvestan J, Cheraghi M, Sebyani M, Shirzad E, Svoboda Z
Publication type: Article
Publication status: Published
Journal: Acta Gymnica
Year: 2018
Volume: 48
Issue: 1
Pages: 9-14
Print publication date: 31/03/2018
Online publication date: 12/02/2018
Acceptance date: 25/01/2018
ISSN (print): 2336-4912
ISSN (electronic): 2336-4920
Publisher: Univerzita Palackeho v Olomouci; Fakulta Telesne Kultury
URL: https://doi.org/10.5507/ag.2018.003
DOI: 10.5507/ag.2018.003
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