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Relationships between force-time curve variables and jump height during countermovement jumps in young elite volleyball players

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.

Publication metadata

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


DOI: 10.5507/ag.2018.003


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