Arazi Hamid, Asadi Abbas, Khalkhali Farhood, Boullosa Daniel, Hackney Anthony C, Granacher Urs, Zouhal Hassane
Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran.
Department of Physical Education and Sport Sciences, Payame Noor University, Tehran, Iran.
Front Physiol. 2020 Jun 24;11:608. doi: 10.3389/fphys.2020.00608. eCollection 2020.
This study aimed to investigate the relationship between the acute to chronic workload ratio (ACWR), based upon participant session rating of perceived exertion (sRPE), using two models [(1) rolling averages (ACWR); and (2) exponentially weighted moving averages (ACWR)] and the injury rate in young male team soccer players aged 17.1 ± 0.7 years during a competitive mesocycle. Twenty-two players were enrolled in this study and performed four training sessions per week with 2 days of recovery and 1 match day per week. During each training session and each weekly match, training time and sRPE were recorded. In addition, training impulse (TRIMP), monotony, and strain were subsequently calculated. The rate of injury was recorded for each soccer player over a period of 4 weeks (i.e., 28 days) using a daily questionnaire. The results showed that over the course of the study, the number of non-contact injuries was significantly higher than that for contact injuries (2.5 vs. 0.5, = 0.01). There were also significant positive correlations between sRPE and training time ( = 0.411, = 0.039), ACWR ( = 0.47, = 0.049), and ACWR ( = 0.51, = 0.038). In addition, small-to-medium correlations were detected between ACWR and non-contact injury occurrence (ACWR, = 0.31, = 0.05; ACWR, = 0.53, = 0.03). Explained variance ( ) for non-contact injury was significantly greater using the ACWR model (ranging between 21 and 52%) compared with ACWR (ranging between 17 and 39%). In conclusion, the results of this study showed that the ACWR model is more sensitive than ACWR to identify non-contact injury occurrence in male team soccer players during a short period in the competitive season.
本研究旨在基于参与者的主观用力感觉评分（sRPE），使用两种模型（(1) 滚动平均值（ACWR）；(2) 指数加权移动平均值（ACWR）），调查17.1±0.7岁年轻男性足球运动员在一个比赛中周期内的急性与慢性工作量比率（ACWR）与损伤率之间的关系。22名运动员参与了本研究，他们每周进行4次训练课，有2天恢复时间，每周有1个比赛日。在每次训练课和每周的每场比赛中，记录训练时间和sRPE。此外，随后计算训练冲量（TRIMP）、单调性和应激。使用每日问卷记录每位足球运动员在4周（即28天）内的损伤率。结果表明，在研究过程中，非接触性损伤的数量显著高于接触性损伤（2.5对0.5，P = 0.01）。sRPE与训练时间（P = 0.411，P = 0.039）、ACWR（P = 0.47，P = 0.049）和ACWR（P = 0.51，P = 0.038）之间也存在显著正相关。此外，在ACWR与非接触性损伤发生之间检测到小到中等程度的相关性（ACWR，P = 0.31，P = 0.05；ACWR，P = 0.53，P = 0.03）。与ACWR（范围在17%至39%之间）相比，使用ACWR模型时非接触性损伤的解释方差（R²）显著更大（范围在21%至52%之间）。总之，本研究结果表明，在比赛赛季的短时间内，ACWR模型比ACWR更能敏感地识别男性足球运动员的非接触性损伤发生情况。
