TY  - JOUR
PY  - 2020//
TI  - Increase in the acute:chronic workload ratio relates to injury risk in competitive runners
JO  - International journal of sports medicine
A1  - Dijkhuis, Talko Bernhard
A1  - Otter, Ruby
A1  - Aiello, Marco
A1  - Velthuijsen, Hugo
A1  - Lemmink, Koen
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Injuries of runners reduce the ability to train and hinder competing. Literature shows that the relation between potential risk factors and injuries are not definitive, limited, and inconsistent. In team sports, workload derivatives were identified as risk factors. However, there is an absence of literature in running on workload derivatives. 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. <br><br>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.<p />  <p>Language: en</p>
LA  - en
SN  - 0172-4622
UR  - http://dx.doi.org/10.1055/a-1171-2331
ID  - ref1
ER  -