Training Volume and High-Speed Loads Vary Within Microcycle in Elite North American Soccer Players.

Autor:	Ishida A; Exercise and Sport Sciences Laboratory, East Tennessee State University, Johnson City, Tennessee., Draper G; Philadelphia Union, Major League Soccer (MLS), Philadelphia, Pennsylvania.; School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom; and., Wright M; School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom; and., Emerson J; School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom; and., Stone MH; Exercise and Sport Sciences Laboratory, East Tennessee State University, Johnson City, Tennessee.; Center of Excellence for Sport Science and Coach Education, East Tennessee State University, Johnson City, Tennessee.
Jazyk:	angličtina
Zdroj:	Journal of strength and conditioning research [J Strength Cond Res] 2023 Nov 01; Vol. 37 (11), pp. 2229-2234.
DOI:	10.1519/JSC.0000000000004522
Abstrakt:	Abstract: Ishida, A, Draper, G, Wright, M, Emerson, J, and Stone, MH. Training volume and high-speed loads vary within microcycle in elite North American soccer players. J Strength Cond Res 37(11): 2229-2234, 2023-The purposes of this study were to reduce dimensionality of external training load variables and examine how the selected variables varied within microcycle in elite North American soccer players. Data were collected from 18 players during 2018-2020 in-seasons. Microcycle was categorized as 1, 2, 3, 4, 5 days before match day (MD-1, MD-2, MD-3, MD-4, and MD-5, respectively). Training load variables included total distance, average speed, maximum velocity, high-speed running distance (HSR), average HSR, HSR efforts, average HSR efforts, sprint distance, average sprint distance, sprint efforts, average sprint efforts, total PlayerLoad, and average PlayerLoad. The first principal component (PC) can explain 66.0% of the variances and be represented by "high-speed load" (e.g., HSR and sprint-related variables) with the second PC relating to "volume" (e.g., total distance and PlayerLoad) accounting for 17.9% of the variance. Average sprint distance and total distance were selected for further analysis. Average sprint distance was significantly higher at MD-3 than at MD-2 (p = 0.01, mean difference = 0.36 m•minute-1, 95% confidence intervals [CIs] = 0.07-0.65 m•minute-1) and MD-4 (p = 0.012, mean difference = 0.26 m•minute-1, 95% CIs = 0.10-0.41 m•minute-1). Total distance was significantly higher at MD-3 than at MD-1 (p < 0.001, mean difference = 1,465 m, 95% CIs = 1,003-1926 m), and MD-2 (p < 0.001, mean difference = 941 m, 95% CIs = 523-1,360 m). Principal component analysis may simplify reporting process of external training loads. Practitioners may need to choose "volume" and "high-speed load" variables. Elite North American Soccer players may accumulate higher average sprint distance at MD-3 than at other training days. (Copyright © 2023 National Strength and Conditioning Association.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu