The dose-response relationship between training-load measures and aerobic fitness in elite academy soccer players.
Sci Med Footb
; 5(2): 128-136, 2021 05.
Article
em En
| MEDLINE
| ID: mdl-35077333
ABSTRACT
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.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Futebol
/
Condicionamento Físico Humano
Tipo de estudo:
Prognostic_studies
Limite:
Adolescent
/
Humans
Idioma:
En
Revista:
Sci Med Footb
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Reino Unido