Force–velocity–power profiling in flywheel squats : differences between sports and association with countermovement jump and change of direction performance

Spudić, Darjan (author), Smajla, Darjan (author), Šarabon, Nejc (author)

The objectives of our study were 1) to examine whether the force-velocity-power (FvP) outcomes in the concentric and eccentric phases of flywheel (FW) squats differ among sports disciplines and 2) to investigate the association between FvP outcome variables and two key sport-performance indicators: countermovement jump height (CMJ) and change of direction (CoD) time involving 90° or 180° turns. Tests were performed by 469 athletes from five different sport disciplines and physical education students. Our results showed that FvP outcomes, when measured during the eccentric phase of the FW squat, effectively differed between athletes from different sports. However, during the concentric phase of the squat, only for the slope variable differences between sports were found. Contrary to our hypothesis, there were no statistically significant correlations between FW squat FvP outcomes and CMJ or CoD test results. These results suggest that FvP outcomes derived from FW squats may lack external validity and cannot be reliably used as a predictor of athletes’ jumping and agility performance. The paper discusses possible reasons for the larger differences between sports in eccentric FvP outcomes, as well as the absence of correlations between FvP outcomes and functional tests.

• Language: English
• Keywords: sport, agility, isoinertia, yo-yo, resistance exercise, external validity
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FŠ - Faculty of Sport
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: Str. 1464–1476
• Numbering: Vol. 42, no. 15
• PID: 20.500.12556/RUL-162722
• UDC: 796.01
• ISSN on article: 1466-447X
• DOI: 10.1080/02640414.2024.2394750
• COBISS.SI-ID: 205503491
• Publication date in RUL: 26.09.2024

Record is a part of a journal

• Title: Journal of sports sciences
• Shortened title: J. sports sci.
• Publisher: Taylor & Francis
• ISSN: 1466-447X
• COBISS.SI-ID: 4350129

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: šport, okretnost, izoinercija, jo-jo, vadba proti uporu