Creatine Kinase concentration is not related to indicators of physical match performance in English Premier League soccer players

Scott, Alec and Malone, James J and Morgans, Ryland and Burgess, Darren and Gregson, Warren and Morton, James P and Drust, Barry (2016) Creatine Kinase concentration is not related to indicators of physical match performance in English Premier League soccer players. International Journal of Sports Science & Coaching, 11 (6). pp. 846-852.

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Abstract

The aim of the present investigation was to determine the relationship between blood creatine kinase (CK) and physical match performance in elite male soccer players. Fifteen elite outfield soccer players (mean ± S.D.; age, 26 ± 4 years; height, 1.8 ± 0.6 m; body mass, 84 ± 6 kg) who played for a professional soccer team competing in the English Premier League were examined. Blood samples were collected 48 hrs following a competitive match. Analysis for CK concentration was performed immediately after collection via spectrophotometry using a commercially available reagent kit (Reflotron® Systems, Roche, Mannheim, Germany). Physical match performance data was collected using a computerised tracking system (Prozone®) from > 6 matches for each player. The physical performance variables selected to examine the relationship between CK and physical match performance included total distance, total high-intensity running distance, total high-intensity running number of efforts, total sprint distance, total sprint number of efforts, average speed and recovery time. Mean ± S.D CK concentration 48 hrs post match was 520 ± 224 µ.mol.l-1 though large individual variation in the CK response at this time point was observed (184 µ.mol.l-1 to 1573 µ.mol.l-1). No significant correlation coefficients were obtained between any of the chosen indicators of physical match performance and CK concentration 48 hrs post match. This data would suggest that CK concentrations are elevated as a consequence of playing a soccer match. Creatine kinase may be of limited value in tracking subtle changes in the performance of players during the competitive season.

Item Type:	Article
Additional Information and Comments:	This is the author's post peer review version of an article, the final version of which is published in the Sage Publications journal International Journal of Sports Science & Coaching.
Faculty / Department:	Faculty of Human and Digital Sciences > School of Health and Sport Sciences
Depositing User:	James Malone
Date Deposited:	09 Dec 2016 10:17
Last Modified:	05 Mar 2018 01:58
URI:	https://hira.hope.ac.uk/id/eprint/1670

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