Lourenço João, Gouveia Élvio Rúbio, Sarmento Hugo, Ihle Andreas, Ribeiro Tiago, Henriques Ricardo, Martins Francisco, França Cíntia, Ferreira Ricardo Maia, Fernandes Luís, Teques Pedro, Duarte Daniel
Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal.
Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal.
Int J Environ Res Public Health. 2023 Jan 14;20(2):1539. doi: 10.3390/ijerph20021539.
Studying fatigue is challenging because it is influenced by physiological, psychological, and sociological states. Fatigue can be assessed objectively or subjectively, but the literature has difficulty understanding how an analytical test relates to a response via a questionnaire. Thus, the purpose of this study was to evaluate the relationships between objective fatigue variables (Squat Jump (SJ) and Countermovement Jump (CMJ)) measured on day-2 to the game and subjective fatigue (Rating Perceived Exertion (RPE) measured on day-3 to the game and Hooper Index (HI) measured on day-2). The sample comprised 32 professional football players from the First Portuguese League aged 25.86 ± 3.15 years. The Spearman correlations and regression analyses were used to study the relationships between the variables. The results showed statistically significant (p < 0.05) but small correlations (0.113−0.172) between several objective metrics and the subjective metrics evaluated. In addition, we found two weak models with statistical significance (p < 0.05) between the dependent objective variables (contact time, height, and elasticity index) and the HI (R2 = 3.7%) and RPE (R2 = 1.6%). Also, nine statistically significant (p < 0.05) but weak models were observed between the subjective dependent variables (HI and RPE) and contact time (R2 = 1.8−2.7%), flight time (R2 = 1.1−1.9%), height (R2 = 1.2−2.3%), power (R2 = 1.4%), pace (R2 = 1.2−2.1%), and elasticity index (R2 = 1.6%). In conclusion, objective and subjective fatigue-monitoring tests in professional soccer do not measure identical but rather complementary aspects of fatigue, and therefore, both need to be considered to gain a holistic perspective.
研究疲劳具有挑战性，因为它会受到生理、心理和社会状态的影响。疲劳可以通过客观或主观方式进行评估，但文献很难理解分析测试如何通过问卷与反应相关联。因此，本研究的目的是评估在比赛前第2天测量的客观疲劳变量（深蹲跳（SJ）和反向移动跳（CMJ））与主观疲劳（在比赛前第3天测量的主观用力感觉等级（RPE）和在比赛前第2天测量的胡珀指数（HI））之间的关系。样本包括32名来自葡萄牙足球超级联赛的职业足球运动员，年龄为25.86±3.15岁。使用斯皮尔曼相关性和回归分析来研究变量之间的关系。结果表明，在评估的几个客观指标和主观指标之间存在统计学显著差异（p<0.05），但相关性较小（0.113 - 0.172）。此外，我们发现两个具有统计学意义（p<0.05）但较弱的模型，分别存在于客观因变量（接触时间、高度和弹性指数）与HI（R2 = 3.7%）和RPE（R2 = 1.6%）之间。同时，在主观因变量（HI和RPE）与接触时间（R2 = 1.8 - 2.7%）、飞行时间（R2 = 1.1 - 1.9%）、高度（R2 = 1.2 - 2.3%）、功率（R2 = 1.4%）、步速（R2 = 1.2 - 2.1%）和弹性指数（R2 = 1.6%）之间观察到九个具有统计学意义（p<0.05）但较弱的模型。总之，职业足球中的客观和主观疲劳监测测试衡量的并非疲劳的相同方面，而是互补方面，因此，需要同时考虑两者以获得全面的视角。
