Individual and combined effects of acute and chronic running loads on injury risk in elite Australian footballers

A model that takes into account the current workload, and the workload the athlete has been prepared for, as an acute:chronic workload ratio has been previously used as a novel way to monitor training load and injury risk. Fifty‐nine elite Australian football players from one club participated in th...

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Published inScandinavian journal of medicine & science in sports Vol. 27; no. 9; pp. 990 - 998
Main Authors Murray, N. B., Gabbett, T. J., Townshend, A. D., Hulin, B. T., McLellan, C. P.
Format Journal Article
LanguageEnglish
Published Denmark Blackwell Publishing Ltd 01.09.2017
Subjects
Adult
Athletes
Athletic Injuries - epidemiology
Australia
competition
Geographic Information Systems
GPS
Humans
Male
monitoring
Risk factors
Running
Running - injuries
Soccer
Soccer - injuries
Sports injuries
Sports medicine
training
workload
Young Adult
workload
competition
training
GPS
monitoring
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Summary:A model that takes into account the current workload, and the workload the athlete has been prepared for, as an acute:chronic workload ratio has been previously used as a novel way to monitor training load and injury risk. Fifty‐nine elite Australian football players from one club participated in this 2‐year study. Global Positioning System technology was used to provide information on running workloads of players. An injury was defined as any non‐contact “time‐loss” injury. One‐week (acute), along with 4‐week (chronic) workloads were calculated for a range of variables. The size of the acute workload in relation to the chronic workload was calculated as an acute:chronic workload ratio. An acute:chronic workload ratio of >2.0 for total distance during the in‐season was associated with a 5 to 8‐fold greater injury risk in the current [relative risk (RR) = 8.65, P = 0.001] and subsequent week (RR = 5.49, P = 0.016). Players with a high‐speed distance acute:chronic workload ratio of >2.0 were 5–11 times more likely to sustain an injury in the current (RR = 11.62, P = 0.006) and subsequent week (RR = 5.10, P = 0.014). These findings demonstrate that sharp increases in running workload increase the likelihood of injury in both the week the workload is performed, and the subsequent week.
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ISSN:0905-7188
1600-0838
DOI:10.1111/sms.12719