Vinsamlegast notið þetta auðkenni þegar þið vitnið til verksins eða tengið í það: http://hdl.handle.net/1946/36337
The objective of this study was to investigate different physical activities of Icelandic football players in competitive matches and compare the results between match halves, recovery time, seasonal variations, and different playing positions. Analysis of correlations between the performance of the Yo-Yo IR1 test and match performance was also observed.
Sixteen amateur male football players (20.68 ± 2.1 years old), playing in the Icelandic first division, participated in the study. The number of matches investigated was sixteen, and the total of observations was 129. T-tests and ANOVA with post hoc Bonferroni was used were used to measure differences between means, and Cohen´s d was calculated for the effect size of differences.
The differences in physical activities in different match halves are dependent on playing positions as the only difference was observed in central midfielders. Wingers covered a greater distance in sprinting at the end of the season, but little or no difference measured in different recovery times. Central midfielders covered a greater total distance than the other playing positions, and wingers covered a greater high-intensity distance and sprinting distance than central defenders and central midfielders. Large positive correlations between performance in the Yo-Yo IR1 test and total distance covered and high-intensity running in competitive matches were found.
There is a difference in physical activities between different playing positions. In line with previous researches, central midfielders covered the highest total distance, and wingers performed the greatest high-intensity distance and sprinting distance. Central defenders covered the lowest total distance, high-intensity, and sprinting distance. Similarities were found between those results and results from the Yo-Yo IR1 test. Coaches and players should take this into account when organizing tactical demands and specific training methods for different playing positions.
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