Document Detail

Activity profile of top-class association football referees in relation to performance in selected physical tests.
MedLine Citation:
PMID:  17454548     Owner:  NLM     Status:  MEDLINE    
The aims of the present study were (1) to analyse the physical demands of top-class referees and (2) to compare their official FIFA fitness test results with physical performance during a match. The work rate profiles of 11 international referees were assessed during 12 competitive matches at the 2003 FIFA Under-17 World Cup and then analysed using a bi-dimensional photogrammetric video analysis system based on direct lineal transformation (DLT) algorithms. In the first 15 min of matches, the referees were more active, performing more high-intensity exercise (P < 0.01) than in the first 15 min of the second half. During the second half of matches, the referees covered a shorter distance (P < 0.01), spent more time standing still (P < 0.05), and covered less ground cruising (P < 0.05), sprinting (P < 0.05), and moving backwards (P < 0.001) than in the first half. Also in the second 45 min, the distance of referees from infringements increased (P < 0.05) in the left attacking zone of the filed. There was also a decrease (P < 0.05) in performance in the period following the most high-intensity activity, compared with the mean for the 90 min. Time spent performing high-intensity activities during a match was not related to performance in the 12-min run (r(2) = 0.30; P < 0.05), the 200-m sprint (r(2) = 0.05; P < 0.05), or the 50-m sprint (r(2) = 0.001; P < 0.05). The results of this study show that: (1) top-class referees experienced fatigue at different stages of the match, and (2) the typical field tests used by FIFA (two 50-m and 200-m sprints, followed by a 12-min run) are not correlated with match activities.
Javier Mallo; Enrique Navarro; José-María García-Aranda; Bart Gilis; Werner Helsen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of sports sciences     Volume:  25     ISSN:  0264-0414     ISO Abbreviation:  J Sports Sci     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-24     Completed Date:  2007-06-26     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8405364     Medline TA:  J Sports Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  805-13     Citation Subset:  IM    
Facultad de Ciencias de la Actividad Física y del Deporte--INEF--Universidad Politécnica de Madrid, Madrid, Spain.
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MeSH Terms
Locomotion / physiology
Physical Exertion / physiology*
Physical Fitness
Task Performance and Analysis*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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