C Stratford
The 10/5 repeated jumps test : are 10 repetitions and three trials necessary?
Stratford, C; Dos’Santos, T; McMahon, JJ
Abstract
The purpose of this study was to identify whether ten repetitions and three trials were necessary to achieve stability in peak reactive strength index (RSI) during the 10/5 repeated jumps test (RJT). Twenty-five males, from multiple sports, performed three trials of the RJT on an in-ground force plate, with 90 seconds’ rest between trials. Intraclass correlation coefficients (ICC = 0.916−0.986) and coefficients of variation (CV ≤ 14.5%) were considered acceptable for all variables. Repeated-measures analysis of variance and Freidman’s tests revealed large and significant differences (p ≤ 0.006, η2 = 0.159−0.434, power ≥ 0.859) in ground contact time (GCT), jump height (JH), and subsequently RSI both between trials and repetitions. Pairwise comparisons revealed that repetitions 1−3 produced longer GCTs (p ≤ 0.05, d = 0.41−1.40), lower JHs (p ≤ 0.05, d = 0.31−0.56), and lower RSI values (p ≤ 0.05, d = 0.35−1.24). The shortest GCTs, greatest JHs and greater RSIs occurred between repetitions 7 and 10, with approximately 60% of peak RSIs occurring during these ranges. The sequential estimate technique revealed that seven repetitions were needed to attain stability in mean peak RSI. Non-significant (p = 0.554) and negligible differences (d ≤ 0.09) in the five best RSIs between trials were noted. One trial of the 10/5 RJT is sufficient to evaluate peak RSI in athletes and should reduce data collection time and fatigue.
Citation
Stratford, C., Dos’Santos, T., & McMahon, J. (2021). The 10/5 repeated jumps test : are 10 repetitions and three trials necessary?. Biomechanics, 1(1), 1-14. https://doi.org/10.3390/biomechanics1010001
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 25, 2020 |
Online Publication Date | Dec 8, 2020 |
Publication Date | Jan 1, 2021 |
Deposit Date | Dec 10, 2020 |
Publicly Available Date | Dec 10, 2020 |
Journal | Biomechanics |
Print ISSN | 2673-7078 |
Publisher | MDPI |
Volume | 1 |
Issue | 1 |
Pages | 1-14 |
DOI | https://doi.org/10.3390/biomechanics1010001 |
Publisher URL | https://doi.org/10.3390/biomechanics1010001 |
Related Public URLs | https://www.mdpi.com/journal/biomechanics |
Additional Information | Additional Information : ** From MDPI via Jisc Publications Router ** Licence for this article: https://creativecommons.org/licenses/by/4.0/ **Journal IDs: eissn 2673-7078 **History: published 08-12-2020; accepted 25-11-2020 |
Files
biomechanics-01-00001.pdf
(497 Kb)
PDF
Licence
http://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
You might also like
Downloadable Citations
About USIR
Administrator e-mail: library-research@salford.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search