Questionable Utility of the Eccentric Utilization Ratio in Relation to the Performance of Volleyball Players

Žiga Kozinc, Jernej Pleša and Nejc Šarabon
Additional contact information
Žiga Kozinc: Faculty of Health Sciences, University of Primorska, Polje 42, SI-6310 Izola, Slovenia
Jernej Pleša: Faculty of Health Sciences, University of Primorska, Polje 42, SI-6310 Izola, Slovenia
Nejc Šarabon: Faculty of Health Sciences, University of Primorska, Polje 42, SI-6310 Izola, Slovenia

IJERPH, 2021, vol. 18, issue 22, 1-10

Abstract: The difference between squat jump (SJ) and countermovement jump (CMJ), termed eccentric utilization ratio (EUR), is frequently suggested as an outcome that can be used in athletic training design. Unlike performance in SJ and CMJ, which is associated with sports performance, the association between EUR and sports performance is almost unexplored. This study aimed to investigate whether EUR is associated with performance in approach jump, linear sprint and change of direction (CoD) tasks in volleyball players. Forty-five male volleyball players performed SJ, CMJ, 25 m linear sprint, approach jump and two CoD tasks (505 test and modified T-test). EUR was calculated based on jump height, peak power, peak force and average power. SJ and CMJ variables showed moderate to high correlation with approach jump performance ( r = 0.42–0.70), small correlation with modified T-test ( r = 0.33–0.40) and small to moderate correlation with sprint time ( r = 0.35–0.49). EUR showed only small associations with performance variables ( r = 0.31–0.34). In all linear regression models with performance outcomes as dependent variables, the CMJ height was always the only statistically significant predictor. Our results support the recent arguments that the EUR offers limited insight into the neuromuscular capabilities of athletes.

Keywords: squat jump; stretch–shortening cycle; agility; vertical jump; 505 test (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/18/22/11754/pdf (application/pdf)
https://www.mdpi.com/1660-4601/18/22/11754/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:22:p:11754-:d:675272

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().