Impact of hydration status on jump performance in recreationally trained males

Paul T. Donahue, Samuel J. Wilson, Charles C. Williams, Christopher M. Hill, Melinda Valliant, John C. Garner

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The vertical jump is commonly used as a means of evaluating athlete readiness. Athletes have been shown to arrive to training and competition in a hypohydrated state. Thus, this investigation sought to examine the impact of hydration status on both countermovement (CMJ) and squat jump (SJ) performance. Twenty-five recreationally trained males completed three CMJ and SJ in a euhydrated, hypohydrated and control condition. Conditions were separated by a minimum of 24 hours. Hydration status was assessed using urine specific gravity. Jump performance was evaluated using both kinematic and kinetic data obtained from a force platform. A repeated-measures ANOVA was performed for each variable of interest in both the CMJ and SJ. CMJ peak and mean force values were significantly greater in the euhydrated condition compared to the hypohydrated condition (p < 0.05), with no differences between the control condition and either experimental condition. SJ showed reductions in jump height, peak and mean velocity, peak and mean power and impulse from control and euhydrated conditions (p < 0.05). The findings of this investigation show that when performing jump testing, specifically SJ, that hydration status of the individual may impact commonly used variables to assess the readiness of the individual for a given day.

Original languageEnglish
Pages (from-to)826-836
Number of pages11
JournalInternational Journal of Exercise Science
Volume13
Issue number4
StatePublished - 2020

Keywords

  • Anaerobic power
  • Dehydration
  • Fluid balance
  • Vertical jump

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