-his study aimed to compare the tactical behavior of young soccer players during small-sided games played with team composition criteria based on procedural tactical knowledge, aerobic power and speed performance. Eighteen male soccer players played 3vs.3 small-sided games with teams balanced according to players' performance on Sprint Test, Yo-Yo Intermittent Recovery Test and the ield test of the System of Tactical Assessment in Soccer. Data related to the incidence of tactical principles were analyzed through the proportions chi-square test with Bonferroni's correction. One-way ANOVA was used to compare players' ofensive and defensive tactical performance. Results showed diferent incidence of ofensive and defensive tactical principles in games with diferent teams' composition criteria. It has also been shown a higher defensive performance when the teams' composition criteria was based on players' procedural tactical knowledge.
Athletes must distribute their attention to many relevant cues during a match. Therefore, athletes’ ability to deal with dual-tasks may be different from the non-athlete population, demanding a deeper investigation within the sports domain. This study aimed to systematically review the acute and chronic effects of dual-tasks in motor and cognitive performances in athletes from different modalities. The search for articles followed all the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The keywords used were: “dual-task” OR “double task” OR “multi-task” OR “divided attention” OR “secondary task” OR “second task” AND “working memory” OR “visual” OR “decision making” OR “gaze behavior” OR “attention” AND “sports” OR “athletes” OR “players”. The Scopus, Pubmed, and Web of Science databases were screened for studies comparing single and dual-tasks, in which the participants were athletes competing at any level, and in which at least one of the following variables were investigated: working memory, decision-making, visual search behavior, perception, anticipation, attention, or motor tasks. Articles were screened using pre-defined selection criteria, and methodological quality was assessed by two researchers independently. Following the eligibility criteria, we included 18 articles in the review: 13 on the acute effects, and five on the chronic effects. This review showed that the acute effect of dual-tasks impairs the motor and cognitive performances of athletes (dual-task cost). However, training with dual-tasks (chronic effect) improved working memory skills and attentional control. We conclude that dual-tasks acutely and chronically impacts motor and cognitive performance.
Most literature has neglected the possible influence of game phase – offensive and defensive – on players’ and teams’ behaviors measured by positional data. Also, the combined effect of contextual variables – match period, match venue, and match outcome – and game phases has not been investigated yet. Therefore, this study aimed to integrate notational and positional analysis to investigate individual and collective tactical behavior in different game phases (offensive and defensive) in football matches under different contextual conditions. The sample comprised 18 matches played by 24 U-20 elite Brazilian athletes during the 2021 national championship. The authors designed a notational system to classify the start and the end of the offensive phase (and consequently, the defensive phase of the opposing team). The positional data was gathered through global positioning system devices and manually integrated with the notational analysis. Contextual variables comprised match period (first vs second halves), match venue (home vs away matches), and match outcome (win vs draw versus lose matches). Results showed significant differences between game phases, with a more spread tactical positioning observed in the offensive phase. Furthermore, interactions between contextual variables and the game phase were observed, although the game phase presented the highest impact on the dependent variables. We conclude that a more spread tactical positioning characterizes offensive behavior and that the impact of the game phase was higher than contextual variables on tactical behavior, which emphasizes the need for future studies to split positional data into attacking and defensive ones. Also, integrating notational and positional analysis are a viable alternative to enrich the data interpretation of football matches concerning the influence of game phases on players’ and teams’ behaviors.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.