The aim of this study was to review the results of the relation between fatigue with the performance and incidence of injuries in soccer, as well as to check in the mentioned studies the fatigue test protocols in this sport. For this, were selected SCOPUS, PubMed, Journals Ovid, Web of Science e BMJ databases, and the keywords soccer and isokinetic, soccer and fatigue test, soccer and fatigue and isokinetic, soccer and injury. The studies included in this study were selected by the title containing the keywords and by reading the abstract, then checking if there was a relation between soccer, evaluation of fatigue in professional players, muscle imbalance and injury. The literature presents several protocols for the assessment of fatigue in professional soccer players. Although there is no consensus on what is the best protocol for evaluation, the fatigue index is an important parameter to be determined. Furthermore, the muscle ratios, especially the functional ratio, allow inferences about muscle balance and the propensity to develop related injuries to the knee joint in soccer players.
Fatigue; functional ratio; isokinetic protocol; soccer
