Transitioning from club to national teams : Training and match load profiles of international footballers

Journal article


Noor, Denny, McCall, Alan, Jones, Mark, Duncan, Craig, Ehrmann, Fabian, Meyer, Tim and Duffield, Rob. (2019). Transitioning from club to national teams : Training and match load profiles of international footballers. Journal of Science and Medicine in Sport. 22(8), pp. 948-954. https://doi.org/10.1016/j.jsams.2019.02.006
AuthorsNoor, Denny, McCall, Alan, Jones, Mark, Duncan, Craig, Ehrmann, Fabian, Meyer, Tim and Duffield, Rob
Abstract

Objectives
To quantify and profile the training and match loads of international footballers as they transition from club-to-camp-to-tournament contexts during multiple international tournaments.

Design
Retrospective single-cohort observational study.

Methods
External (session duration and count) and internal (session Rating of Perceived Exertion [s-RPE]) load data of all outfield players from the same national team were compared between club, pre-tournament camp and initial tournament phases of 3 recent international competitions. Further, load profiles were compared between each phase based on the acute:chronic (A/C) ratio using a 7 to 21-day ratio.

Results
Moderate-to-large effect sizes existed for increased number of sessions (ES = 1.92; 90% CI: 1.56, 2.27) and s-RPE training load (ES = 1.16; 0.84, 1.48) from club to camp. Conversely, transitioning from camp-to-tournament showed very large effects for decreased number of training sessions (ES = −3.17; −3.47, −2.86) and s-RPE training load (ES = −2.05; −2.35, −1.75), alongside increased number of matches (ES = 1.87; 1.55, 2.18) and s-RPE match load (ES = 1.57; 1.25, 1.89). Consequently, a moderate effect was evident for increased A/C ratio during the club-to-camp transition (ES = 1.02; 0.70, 1.33), while a moderate decrease in the A/C ratio occurred during the tournament (ES = −0.76; −1.06, −0.46).

Conclusions
International footballers showed expected increased training load when entering into pre-tournament camps, predominately via increased number of training sessions. Subsequent reductions in training volume coincide with increased match volume, though total load decreases. Such profiles provide insight into load accumulation transitioning from club to national teams in international footballers.

Keywordssoccer; training load; monitoring; national team; tournament
Year2019
JournalJournal of Science and Medicine in Sport
Journal citation22 (8), pp. 948-954
PublisherElsevier Ltd
ISSN1440-2440
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jsams.2019.02.006
Scopus EID2-s2.0-85063025932
Research or scholarlyResearch
Page range948-954
Publisher's version
License
All rights reserved
Output statusPublished
Publication dates
Online01 Mar 2019
Publication process dates
Accepted24 Feb 2019
Deposited12 Jul 2021
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