Monitoring training in elite soccer players: systematic bias between running speed and metabolic power data.
Int J Sports Med
; 34(11): 963-8, 2013 Nov.
Article
em En
| MEDLINE
| ID: mdl-23549691
ABSTRACT
We compared measurements of high-intensity activity during field-based training sessions in elite soccer players of different playing positions. Agreement was appraised between measurements of running speed alone and predicted metabolic power derived from a combination of running speed and acceleration. Data was collected during a 10-week phase of the competitive season from 26 English Premier League outfield players using global positioning system technology. High-intensity activity was estimated using the total distance covered at speeds >14.4 km · h⻹ (TS) and the equivalent metabolic power threshold of >20 W · kg⻹ (TP), respectively. We selected 0.2 as the -minimally important standardised difference between methods. Mean training session TS was 478±300 m vs. 727±338 m for TP (p<0.001). This difference was greater for central defenders (~ 85%) vs. wide defenders and attackers (~ 60%) (p<0.05). The difference between methods also decreased as the proportion of high-intensity distance within a training session increased (R2=0.43; p<0.001). We conclude that the high-intensity demands of soccer training are underestimated by traditional measurements of running speed alone, especially in training sessions or playing positions associated with less high-intensity activity. Estimations of metabolic power better inform the coach as to the true demands of a training session.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Limite:
Adult
/
Humans
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article