Document Type

Journal Article

Publication Title

Journal of Strength and Conditioning Research

Publisher

Wolters Kluwer

School

Center for Exercise and Sports Science Research / School of Medical and Health Sciences

RAS ID

35932

Funders

Edith Cowan University - Open Access Support Scheme 2020

Comments

Hughes, S., Warmenhoven, J., Haff, G.G., Chapman, D.W., Nimphius, S. (2021). Countermovement jump and squat jump force-time curve analysis in control and fatigue conditions. Journal of Strength and Conditioning Research. Advance online publication.

https://doi.org/10.1519/JSC.0000000000003955

Abstract

This study aimed to reanalyze previously published discrete force data from countermovement jumps (CMJs) and squat jumps (SJs) using statistical parametric mapping (SPM), a statistical method that enables analysis of data in its native, complete state. Statistical parametric mapping analysis of 1-dimensional (1D) force-time curves was compared with previous zero-dimensional (0D) analysis of peak force to assess sensitivity of 1D analysis. Thirty-two subjects completed CMJs and SJs at baseline, 15 minutes, 1, 24, and 48 hours following fatigue and control conditions in a pseudo random cross-over design. Absolute (CMJABS/SJABS) and time-normalized (CMJNORM/SJNORM) force-time data were analyzed using SPM 2-way repeated measures analysis of variance with significance accepted at α = 0.05. The SPM indicated a magnitude of difference between force-time data with main effects for time (p < 0.001) and interaction (p < 0.001) observed in CMJABS, SJABS, and SJNORM, whereas previously published 0D analysis reported no 2-way interaction in CMJ and SJ peak force. This exploratory research demonstrates the strength of SPM to identify changes between entire movement force-time curves. Continued development and use of SPM analysis techniques could present the opportunity for refined assessment of athlete fatigue and readiness with the analysis of complete force-time curves.

DOI

10.1519/JSC.0000000000003955

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Research Themes

Society and Culture

Priority Areas

Human movement and performance

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