Relationship between Objective and Subjective Fatigue Monitoring Tests in Professional Soccer

João Lourenço, Élvio Rúbio Gouveia (), Hugo Sarmento, Andreas Ihle, Tiago Ribeiro, Ricardo Henriques, Francisco Martins, Cíntia França, Ricardo Maia Ferreira, Luís Fernandes, Pedro Teques and Daniel Duarte
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João Lourenço: Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal
Élvio Rúbio Gouveia: Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal
Hugo Sarmento: Research Unit for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, University of Coimbra, 3004-504 Coimbra, Portugal
Andreas Ihle: Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland
Tiago Ribeiro: Faculty of Human Kinetics, University of Lisbon, 1499-002 Lisbon, Portugal
Ricardo Henriques: Marítimo da Madeira—Futebol, SAD, 9020-208 Funchal, Portugal
Francisco Martins: Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal
Cíntia França: Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal
Ricardo Maia Ferreira: Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal
Luís Fernandes: Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal
Pedro Teques: Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal
Daniel Duarte: Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690 Maia, Portugal

IJERPH, 2023, vol. 20, issue 2, 1-11

Abstract: 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 ( R 2 = 3.7%) and RPE ( R 2 = 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 ( R 2 = 1.8–2.7%), flight time ( R 2 = 1.1–1.9%), height ( R 2 = 1.2–2.3%), power ( R 2 = 1.4%), pace ( R 2 = 1.2–2.1%), and elasticity index ( R 2 = 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.

Keywords: football; fatigue; monitorization; vertical jump; well-being questionnaire (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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