Asian Journal of Sports Medicine
Lo Djaoui1,*, 
Del P. Wong2, Vincent Pialoux1, Christophe Hautier1, Cristiano D. Da Silva3, Karim Chamari4, Alexandre Dellal6The aim of the present study was to examine the variation in physical activity of elite soccer players within successive prolonged periods of fixture congestion over 5 months of competition during the competitive season 2011-2012.
Sixteen international players, classified into 6 positions (central defenders: CD; full-backs: FB; central defensive midfielders: CDM; wide midfielders: WM; central attacking midfielders: CAM; forwards: FW), were examined during the French First League, French Cup, and UEFA Champion's League matches. The total distance covered at light (<12 km.h?1), sustained-cruising (>18-21 km.h?1), high (>21-23 km.h?1), very high (>23-25 km.h?1), sub-maximal (>25-27 km.h?1), and maximal (>27 km.h?1) intensity running (IR) were measured and analysed using a semi-automatic match analysis system (Amisco Pro).
No differences were observed between congested and non-congested periods (two vs. one match a week, respectively) for the total distance covered at all the speed thresholds over 18 km.h?1, with no variation in physical fitness over the 5 studied months. Specifically to the playing positions, regardless of the congestion periods, FB and WM covered more distance than CDM over 21km.h?1; FB, WM and FW covered similar distances for all running intensities; and CD and CDM covered shorter distance during non-congested compared to congested periods (
The present study reveals that prolonged congested match fixture did not affect the high-intensity physical activity of top-class soccer players during official games during a 5 months fixture period.
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© 2013, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.
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