Reference values for the creatine kinase response to professional Australian football match-play

Inman, LAG; Rennie, MJ; Watsford, ML; Gibbs, NJ; Green, J; Spurrs, RW

Reference values for the creatine kinase response to professional Australian football match-play

Inman, LAG Rennie, MJ

Watsford, ML

Gibbs, NJ Green, J Spurrs, RW

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Publication Type:: Journal Article
Citation:: Journal of Science and Medicine in Sport, 2018, 21 (8), pp. 852 - 857
Issue Date:: 2018-08-01

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Field	Value	Language
dc.contributor.author	Inman, LAG	en_US
dc.contributor.author	Rennie, MJ https://orcid.org/0000-0001-5590-139X	en_US
dc.contributor.author	Watsford, ML https://orcid.org/0000-0002-4569-6377	en_US
dc.contributor.author	Gibbs, NJ	en_US
dc.contributor.author	Green, J	en_US
dc.contributor.author	Spurrs, RW	en_US
dc.date.available	2017-12-21	en_US
dc.date.issued	2018-08-01	en_US
dc.identifier.citation	Journal of Science and Medicine in Sport, 2018, 21 (8), pp. 852 - 857	en_US
dc.identifier.issn	1440-2440	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125486
dc.description.abstract	© 2018 Sports Medicine Australia Objectives: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. Design: Case series. Methods: CK was collected between 36–48 h following professional Australian football match-play. A total of 1565 samples from 62 players were assessed over three consecutive seasons. The ULN were determined for raw scores and as a percentage of each player's season-mean response. Results: The ULN for raw CK, as determined by the 97.5th, 95th and 90th percentiles were 1715 (90%CI: 1605–1890), 1380 (90%CI: 1325–1475) and 1110 (90%CI: 1050–1170) U L−1 respectively. The ULN intra-individual response (97.5th percentile) was defined as a player's score being greater than 94% (90%CI: 84–102%) above their season-mean. Conclusions: Professional Australian football elicits a profound effect on the CK response. The values provide a reference tool for athletes competing at this level of competition. The novel method of representing the CK response as a percentage difference from an individuals’ season-mean enables a superior comparative ability between CK responses and reduces the high CK responder bias that occurs when using raw scores alone. The data will assist medical and conditioning staff in excluding medical emergencies and also aid in individualising the prescription of training loads and recovery to optimise athlete performance and minimise further muscle damage.	en_US
dc.relation.ispartof	Journal of Science and Medicine in Sport	en_US
dc.relation.isbasedon	10.1016/j.jsams.2017.12.013	en_US
dc.subject.classification	Sport Sciences	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Creatine Kinase	en_US
dc.subject.mesh	Reference Values	en_US
dc.subject.mesh	Soccer	en_US
dc.subject.mesh	Adult	en_US
dc.subject.mesh	Australia	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Young Adult	en_US
dc.subject.mesh	Athletes	en_US
dc.subject.mesh	Biomarkers	en_US
dc.title	Reference values for the creatine kinase response to professional Australian football match-play	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	21	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
utslib.for	1117 Public Health and Health Services	en_US
utslib.for	1116 Medical Physiology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Faculty of Health/Sports and Exercise Science
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	21	en_US

Abstract:

© 2018 Sports Medicine Australia Objectives: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. Design: Case series. Methods: CK was collected between 36–48 h following professional Australian football match-play. A total of 1565 samples from 62 players were assessed over three consecutive seasons. The ULN were determined for raw scores and as a percentage of each player's season-mean response. Results: The ULN for raw CK, as determined by the 97.5th, 95th and 90th percentiles were 1715 (90%CI: 1605–1890), 1380 (90%CI: 1325–1475) and 1110 (90%CI: 1050–1170) U L−1 respectively. The ULN intra-individual response (97.5th percentile) was defined as a player's score being greater than 94% (90%CI: 84–102%) above their season-mean. Conclusions: Professional Australian football elicits a profound effect on the CK response. The values provide a reference tool for athletes competing at this level of competition. The novel method of representing the CK response as a percentage difference from an individuals’ season-mean enables a superior comparative ability between CK responses and reduces the high CK responder bias that occurs when using raw scores alone. The data will assist medical and conditioning staff in excluding medical emergencies and also aid in individualising the prescription of training loads and recovery to optimise athlete performance and minimise further muscle damage.

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http://hdl.handle.net/10453/125486