Malone, Shane and Owen, Adam and Newton, Matt and Mendes, Bruno and Collins, Kieran D. and Gabbett, Tim J. (2017) The acute:chronic workload ratio in relation to injury risk in professional soccer. Journal of Science and Medicine in Sport, 20 (6). pp. 561-565. ISSN 1440-2440
Abstract
To examine the association between combined sRPE measures and injury risk in elite professional soccer. Design Observational cohort study. Methods Forty-eight professional soccer players (mean ± SD age of 25.3 ± 3.1 yr) from two elite European teams were involved within a one season study. Players completed a test of intermittent-aerobic capacity (Yo-YoIR1) to assess player's injury risk in relation to intermittent aerobic capacity. Weekly workload measures and time loss injuries were recorded during the entire period. Rolling weekly sums and week-to-week changes in workload were measured, allowing for the calculation of the acute:chronic workload ratio, which was calculated by dividing the acute (1-weekly) and chronic (4-weekly) workloads. All derived workload measures were modelled against injury data using logistic regression. Odds ratios (OR) were reported against a reference group. Results Players who exerted pre-season 1-weekly loads of ≥1500 to ≤2120 AU were at significantly higher risk of injury compared to the reference group of ≤1500 AU (OR = 1.95, p = 0.006). Players with increased intermittent-aerobic capacity were better able to tolerate increased 1-weekly absolute changes in training load than players with lower fitness levels (OR = 4.52, p = 0.011). Players who exerted in-season acute:chronic workload ratios of >1.00 to <1.25 (OR = 0.68, p = 0.006) were at significantly lower risk of injury compared to the reference group (≤0.85). Conclusions These findings demonstrate that an acute:chronic workload of between 1.00 and 1.25 is protective for professional soccer players. A higher intermittent-aerobic capacity appears to offer greater injury protection when players are exposed to rapid changes in workload in elite soccer players. Moderate workloads, coupled with moderate-low to moderate-high acute:chronic workload ratios, appear to be protective for professional soccer players.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Published version cannot be displayed due to copyright restrictions. |
| Faculty/School / Institute/Centre: | No Faculty |
| Faculty/School / Institute/Centre: | No Faculty |
| Date Deposited: | 17 May 2017 03:32 |
| Last Modified: | 06 Mar 2019 05:08 |
| Uncontrolled Keywords: | injury prevention; intermittent team sports; odds risk; training load; Yo-YoIR1 |
| Fields of Research (2008): | 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110604 Sports Medicine |
| Socio-Economic Objectives (2008): | C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified |
| Identification Number or DOI: | https://doi.org/10.1016/j.jsams.2016.10.014 |
| URI: | http://eprints.usq.edu.au/id/eprint/32238 |
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