Spikes in acute:chronic workload ratio (ACWR) associated with a 5-7 times greater injury rate in English Premier League football players: a comprehensive 3-year study
| Autor: | Stewart Bruce-Low, François-Xavier Li, Mo Gimpel, Laura Bowen, Aleksander Stephan Gross |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty football injury GPS education Physical Exertion Physical Therapy Sports Therapy and Rehabilitation Football League Injury rate Running Young Adult Risk Factors Injury prevention Soccer Task Performance and Analysis Medicine Humans Orthopedics and Sports Medicine workloads Original Research Football players business.industry Incidence Premier League Workload General Medicine Sprint Relative risk Athletic Injuries Physical therapy Geographic Information Systems business Physical Conditioning Human |
| Zdroj: | British Journal of Sports Medicine |
| ISSN: | 1473-0480 |
| Popis: | ObjectivesWe examined the relation between global positioning system (GPS)-derived workloads and injury in English Premier League football players (n=33) over three seasons.MethodsWorkload and injury data were collected over three consecutive seasons. Cumulative (1-weekly, 2-weekly, 3-weekly and 4-weekly) loads in addition to acute:chronic workload ratios (ACWR) (acute workload (1-week workload)) divided by chronic workload (previous 4-week average acute workload) were classified into discrete ranges by z-scores. Relative risk (RR) for each range was then calculated between injured and non-injured players using specific GPS variables: total distance, low-intensity distance, high-speed running distance, sprint distance, accelerations and decelerations.ResultsThe greatest non-contact injury risk was when the chronic exposure to decelerations was low (2.0 (RR=6.7). Non-contact injury risk was also 5–6 times higher for accelerations and low-intensity distance when the chronic workloads were categorised as low and the ACWR was >2.0 (RR=5.4–6.6), compared with ACWRs below this. When all chronic workloads were included, an ACWR >2.0 was associated with a significant but lesser injury risk for the same metrics, plus total distance (RR=3.7–3.9).ConclusionsWe recommend that practitioners involved in planning training for performance and injury prevention monitor the ACWR, increase chronic exposure to load and avoid spikes that approach or exceed 2.0. |
| Databáze: | OpenAIRE |
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