Background: Our aims were to investigate the time-course effects of a futsal match on performance, oxidative stress, and muscle damage markers, as well as inflammatory and antioxidant responses during a 6-day post-match period. Methods: Thirty-four female high-level futsal players were assessed on several oxidative stress, inflammation, subjective muscle soreness, subjective rate perceived exertion, and performance tests before a futsal match, immediately after, and 24 h to 144 h after. Results: Counter movement jump, 20 m, and 10 m sprints performance significantly decreased immediately after the match (p < 0.05) and returned to baseline 72 h post-match (p > 0.05). Delayed onset muscle soreness peaked 24 h post-match and rate perceived exertion peaked post-match (p < 0.05) and returned to baseline 96 h post-match (p > 0.05). Inflammatory biomarkers peaked at 24 h (p < 0.05) and remained significantly elevated for 72 h after the match (p < 0.05). Muscle damage biomarkers peaked at 24 h (p < 0.05) and remained significantly (p < 0.05) elevated for at least 72 h after the match. Oxidative stress markers peaked at 24 h–48 h (p < 0.05) and returned to baseline 120 h post-match (p > 0.05). In respect to antioxidant responses, these peaked at 24 h–48 h post-match (p < 0.05) and returned to baseline 120 h after the match (p > 0.05). Conclusions: A single futsal match induces short/mid-term changes in performance, inflammation, oxidative stress, and muscle damage markers for about 72 h–96 h post-match.

The conceptual model of sport cohesion that Carron developed describes the relationships between cohesion and performance including the antecedents and consequences of the variables. Although researchers have conducted a plethora of studies around the relationship between cohesion and performance, there is a gap in literature regarding longitudinal changes of this relationship as well as its direction. Therefore, the aim of the current study is to examine the relationship between cohesion and performance for soccer teams during a full competitive season as well as the direction of the relationship. The study suggests a new model for the relationship between cohesion and performance. In total, 173 Greek soccer players (M=21.91) completed the Group Environment Questionnaire (Carron et al., 1985) in all the measurements from the beginning of the preparation to the end of the competitive season. The results showed that cohesion and performance are two variables that affect each other in soccer, with a stronger direction from cohesion to performance. However, cohesion affects performance either positively or negatively throughout the season.

Wydawnictwo Naukowe Uniwersytetu Szczecińskiego