Sports Research Center, Miguel Hernandez University of Elche, Alicante, Spain.
Center for Translational Research in Physiotherapy, Department of Pathology and Surgery, Miguel Hernandez University of Elche, San Joan, Spain.
Eur J Sport Sci. 2021 Aug;21(8):1215-1223. doi: 10.1080/17461391.2020.1819435. Epub 2020 Sep 24.
This study examined the association and predictive ability of several markers of internal workload on risk of injury in high-performance junior tennis players. Fifteen young, high-level tennis players (9 males, 6 females; age: 17.2 ± 1.1 years; height: 178.5 ± 8.7 cm; mass: 68.1 ± 4.8 kg) participated in this investigation. Data on injury epidemiology and internal workload during training were obtained for one competitive season. The session-rating of perceived exertion (s-RPE) was used to calculate internal workload markers in absolute (acute workload and chronic workload for 2-weeks, 3-weeks and 4-weeks) and relative terms (acute:chronic workload ratios [ACWR] for 2-weeks, 3-weeks and 4-weeks). Associations and diagnostic power for predicting tennis injuries were examined through generalised estimating equations and receiver operating characteristics analyses. During the season, a total of 40 injuries were recorded, corresponding to 3.5 injuries per 1000 h of tennis practice. The acute workload was highly associated with injury incidence (=0.04), as injury risk increased by 1.62 times (95% CI: 1.01-2.62) for every increase of 1858.7 arbitrary units (AU) of the workload during the most recent training week. However, acute workload was a poor predictor of injury, and associations between injury and internal workload markers were weak (all >0.05). These findings demonstrate an association between high values of acute workload and the risk of injury in high-level tennis players. However, a high acute workload is only one of the many factors associated with injury, and by itself, has low predictive ability for injury.
本研究旨在探讨几种内部工作量标志物与高水平青少年网球运动员受伤风险的关联及其预测能力。15 名年轻的高水平网球运动员（9 名男性，6 名女性；年龄：17.2±1.1 岁；身高：178.5±8.7cm；体重：68.1±4.8kg）参与了本项研究。在一个竞技赛季中，获取了与损伤流行病学和训练期间内部工作量相关的数据。使用主观感觉用力程度评分（s-RPE）来计算绝对（2 周、3 周和 4 周的急性工作量和慢性工作量）和相对（2 周、3 周和 4 周的急性：慢性工作量比 [ACWR]）的内部工作量标志物。通过广义估计方程和受试者工作特征分析，研究了与网球损伤的关联和预测能力。在整个赛季中，共记录到 40 次损伤，相当于每 1000 小时网球训练中出现 3.5 次损伤。急性工作量与损伤发生率高度相关（=0.04），即最近一周训练中工作量增加 1858.7 个任意单位（AU），损伤风险增加 1.62 倍（95%CI：1.01-2.62）。然而，急性工作量是损伤的一个较差预测指标，且损伤与内部工作量标志物之间的关联较弱（均>0.05）。这些发现表明，高水平的急性工作量与高水平网球运动员受伤风险之间存在关联。然而，高急性工作量只是与损伤相关的众多因素之一，其本身对损伤的预测能力较低。
