The between-week reliability of neuromuscular, endocrine, and mood markers in soccer players and the repeatability of the movement demands during small-sided games

Sparkes, William, Turner, Anthony N. ORCID: https://orcid.org/0000-0002-5121-432X, Weston, Matthew, Russell, Mark, Johnson, Michael and Kilduff, Liam P. (2021) The between-week reliability of neuromuscular, endocrine, and mood markers in soccer players and the repeatability of the movement demands during small-sided games. The Journal of Sports Medicine and Physical Fitness . ISSN 0022-4707 [Article] (Published online first) (doi:10.23736/S0022-4707.21.12993-7)

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Abstract

BACKGROUND: Establishing the reliability and repeatability of both the movement demands and the consequential responses of athletes applied settings is important. Therefore, the primary aim of this study was to assess the between-week reliability of potential fatigue monitoring methods in soccer players. Secondary aims were to establish the repeatability of the movement demands and the changes in monitoring variables from the same small-sided game (SSG) protocol programmed on consecutive weeks.

METHODS: Twelve semi-professional soccer players (age, 21±2 years; mass, 80.1±6.8kg; height, 1.81±0.06m) performed the same SSG protocol (4vs4+goalkeepers; 6x7-min, 2-min inter-set recovery) separated by 7 days. Movement demands were monitored using global positioning systems (GPS), with countermovement jump (CMJ), saliva (testosterone and cortisol), and brief assessment of mood (BAM+) collected immediately pre and post SSG training.

RESULTS: Results suggest that CMJ variables and hormonal markers have good between-week reliability when measuring athletes at rest (CV, 2.1–7.7%; ICC, 0.82–0.98), however BAM+ did not (CV, 23.5%; ICC, 0.47). GPS variables presented low to high repeatability during SSG training, with reliability statistics varying between metrics (CV, 4.4–62.4%; ICC, 0.30–0.81). In detecting responses from pre- to post-SSG training, CMJ and hormonal markers showed moderate to very-high reliability (ICC, 0.68–0.99), whilst BAM + did not (ICC, 0.12).

CONCLUSIONS: The findings from this study suggest CMJ and hormonal markers provide good between-week reliability, yet caution should be applied when using short subjective questionnaires. Additionally, some movement demands may not be repeatable when programming the same SSG session on separate occasions.

Item Type: Article
Keywords (uncontrolled): monitoring, GPS, soccer, SSG, reliability
Research Areas: A. > School of Science and Technology > London Sport Institute > Strength and Conditioning at the London Sport Institute
Item ID: 34185
Notes on copyright: This is a postprint version of the article published in The Journal of Sports Medicine and Physical Fitness. This version is free to view and download to private research and study only. Not for redistribution or re-use. ©Edizioni Minerva Medica. The final published article is available online on Minerva Medica website at https://doi.org/10.23736/S0022-4707.21.12993-7. Cite this article as Sparkes W, Turner AN, Weston M, Russell M, Johnston M, Kilduff LP. The between-week reliability of neuromuscular, endocrine, and mood markers in soccer players and the repeatability of the movement demands during small-sided games. J Sports Med Phys Fitness 2021 Dec 09. DOI: 10.23736/S0022-4707.21.12993-7
Useful Links:
Depositing User: Anthony Turner
Date Deposited: 19 Nov 2021 14:19
Last Modified: 07 Jan 2022 20:07
URI: https://eprints.mdx.ac.uk/id/eprint/34185

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