Raya-González, Javier, Pulido, Juan José, Beato, Marco, Ponce-Bordón, José Carlos, López del Campo, Roberto, Resta, Ricardo and García-Calvo, Tomás (2022) Analysis of the effect of injuries on match performance variables in professional soccer players: a retrospective, experimental longitudinal design. Sports medicine-Open, 8 (31). ISSN 2199-1170

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Abstract

Background: Knowing the impact of injuries is essential for their adequate management during reconditioning programs.
Objective: This study aimed to analyze the changes in match performance parameters in professional soccer players after sustaining an injury, which was defined according to injury severity. Methods: Two-hundred and seven injuries related to one hundred and sixty-one professional soccer players from the Spanish LaLigaTM were considered for this study. All the injuries were classified according to their severity as minor (from 4 to 7 missed days), moderate (from 8 to 28 missed days), and major (more than 28 missed days). Through Mediacoach® videotracking system, time and external demand variables were collected and subsequently compared between pre-injury and return to play periods. The analyzed variables were (in m.min-1): relative distance covered (RD; total distance covered·min-1), distance covered walking (0-6 km·h−1), distance covered jogging (6-12 km·h−1), distance covered running (12-18 km·h−1), distance covered at intense running (18-21 km·h−1), distance covered at high-speed running (21-24 km·h−1) and sprinting (>24 km·h−1) distance covered.
Results: Significant reductions in playing time after suffering moderate and major injuries were observed. Significant reductions after minor injuries were observed in jogging (>6 km·h−1) and running (6-12 km·h−1), while significantly greater distances at intense running (18-21 km·h−1) and high-speed running (21-24 km·h−1) were covered by players who suffer major injuries. Finally, relevant decreases in the maximum speed achieved after moderate and major injuries were found.
Conclusions: In conclusion, this study shows the importance of high loads during reconditioning programs, as well as implementing strategies that allow reaching levels of maximum speed values after the return to play.

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