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Título
Association Between the Acute to Chronic Workload Ratio and Injury Occurrence in Young Male Team Soccer Players: A Preliminary Study
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Facultad/Centro
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Título de la revista
Frontiers in Physiology
Cita Bibliográfica
Arazi, H.; Asadi, A.; Khalkhali, F.; Hackney, A. C.; Granacher, U.; Zouhal, H.; Boullosa Álvarez, D. A. (2020). Association Between the Acute to Chronic Workload Ratio and Injury Occurrence in Young Male Team Soccer Players: A Preliminary Study. Frontiers in Physiology, 11
Editorial
Frontiers Media
Fecha
2020
Resumen
[EN] 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 (ACWRRA); and (2) exponentially weighted moving averages
(ACWREWMA)] 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, p = 0.01). There were also significant positive correlations between
sRPE and training time (r = 0.411, p = 0.039), ACWRRA (r = 0.47, p = 0.049), and
ACWREWMA (r = 0.51, p = 0.038). In addition, small-to-medium correlations were detected
between ACWR and non-contact injury occurrence (ACWRRA, r = 0.31, p = 0.05;
ACWREWMA, r = 0.53, p = 0.03). Explained variance (r2) for non-contact injury was
significantly greater using the ACWREWMA model (ranging between 21 and 52%) compared
with ACWRRA (ranging between 17 and 39%). In conclusion, the results of this study
showed that the ACWREWMA model is more sensitive than ACWRRA to identify non-contact
injury occurrence in male team soccer players during a short period in the competitive season.
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