Monitoring Training in Elite Soccer Players: Systematic Bias between Running Speed and Metabolic Power Data

作者：Gaudino P^*; Iaia F M; Alberti G; Strudwick A J; Atkinson G; Gregson W

来源：International Journal of Sports Medicine, 2013, 34(11): 963-968.

DOI：10.1055/s-0033-1337943

• GPS
• acceleration
• deceleration
• energy cost
• high-intensity
• position

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 %26gt;14.4km%26lt;bold%26gt;%26lt;/bold%26gt;h(-1) (TS) and the equivalent metabolic power threshold of %26gt;20W%26lt;bold%26gt;%26lt;/bold%26gt;kg(-1) (TP), respectively. We selected 0.2 as the minimally important standardised difference between methods. Mean training session TS was 478 +/- 300m vs. 727 +/- 338m for TP (p%26lt;0.001). This difference was greater for central defenders (similar to 85%) vs. wide defenders and attackers (similar to 60%) (p%26lt;0.05). The difference between methods also decreased as the proportion of high-intensity distance within a training session increased (R-2=0.43; p%26lt;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.

• 出版日期2013-11