Increase in the Acute:Chronic Workload Ratio relates to Injury Risk in Competitive Runners
This study used the workload derivatives acute
workload, chronic workload, and acute: chronic workload ratios to investigate
the relation between workload and injury risk in running. Twenty-three
competitive runners kept a daily training log for 24 months. The runners
reported training duration, training intensity and injuries. One-week (acute)
and 4-week (chronic) workloads were calculated as the average of training
duration multiplied by training intensity. The acute:chronic workload ratio was
determined dividing the acute and chronic workloads. Results show that a
fortnightly low increase of the acute:chronic workload ratio (0.10–0.78)
led to an increased risk of sustaining an injury (p<0.001). Besides, a
low increase of the acute:chronic workload ratio (0.05–0.62) between the
second week and third week before an injury showed an association with increased
injury risk (p=0.013). These findings demonstrate that the acute:chronic
workload ratio relates to injury risk. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents | Abstract | Full text
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Dijkhuis, Talko Bernhard Otter, Ruby Aiello, Marco Velthuijsen, Hugo Lemmink, Koen Tags: Training & Testing Source Type: research