The dose–response relationship between training-load measures and aerobic fitness in elite academy soccer players

Ellis, Matthew, Penny, Ryan, Wright, Ben, Noon, Mark, Myers, Tony D. and Akubat, Ibrahim (2020) The dose–response relationship between training-load measures and aerobic fitness in elite academy soccer players. Science and Medicine in Football. pp. 1-9. ISSN 2473-3938

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The aim of the current study is to examine the dose-response relationships between training load (TL) measures and the consequent changes in aerobic fitness. Data were collected over the 6-week pre-season period in elite youth soccer players. Participants completed a lactate threshold test to identify changes in treadmill speed at 2 mmol·l-1 (S2) and 4 mmol·l-1 (S4). Internal TL was quantified with the following training impulse (TRIMP) methods: Banister TRIMP, Edwards TRIMP, Lucia TRIMP, individual TRIMP (iTRIMP) and rate of perceived exertion was also collected. External TL measures were total distance, PlayerLoad, high speed running (14.4-19.8 km·h-1), very high-speed running (19.8-25.2 km·h-1) and maximal sprint distance (>25.2 km·h-1). Individual high-speed distance was derived from each participants treadmill speed at S4. Different Bayesian regression models were run with different likelihood functions. The best fitting models with both the lowest out-of-sample prediction error and the highest variance explained (R2) were used. iTRIMP had the strongest relationships with changes in S2 (r=0.93, R2=0.90) and S4 (r=0.88, R2=0.82). Explained variance ranged from 10%-69% and 11%-38% for all other internal TL measures and external measures respectively. In summary, the iTRIMP method demonstrates a dose-response relationship with changes in aerobic fitness in elite youth soccer players.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Science and Medicine in Football on 28/08/2020, available online:
Divisions: Faculty of of Arts, Society and Professional Studies > Department of Health and Behavioural Sciences
Depositing User: Ms Hazel Barham
Date Deposited: 10 Sep 2020 16:45
Last Modified: 28 Aug 2021 04:00

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