Integrated training through small-sided games: effects on football players’ tactical engagement. A systematic review

Background: Small-Sided Games (SSG) are commonly adopted in football as an integrated training approach that promotes concurrent improvements across players’ physical, technical, and tactical domains. although numerous studies have examined their role in performance, the effects of specific task constraints on tactical engagement remain only partially clarified. Objective: This systematic review sought to determine how various SSG-related constraints—including game format, pitch dimensions, age category, rule modifications, and coaching instructions—affect football players’ tactical engagement. Methods: Following PRISMA guidelines, an extensive search was conducted in Web of Science, PubMed, and Scopus databases. From 305 retrieved records, 36 studies satisfied all inclusion criteria and were analyzed in detail. Results: Overall, the results show that smaller formats tend to stimulate individual tactical actions, while larger formats promote coordinated collective behaviors. changes in pitch size influence how players explore space and vary their tactical responses. task modifications, such as scoring rules or visual cues, affect offensive width and defensive compactness. age and experience also play a role, with more experienced players demonstrating more stable tactical patterns. Discussion: In comparison with previous literature, these results align with earlier evidence highlighting the sensitivity of tactical behavior to constraint manipulation, while extending current knowledge by emphasizing the combined and interacting effects of multiple task variables. Conclusion: Overall, this review suggests that SSG are an effective training tool for guiding tactical engagement, while emphasizing the need for more robust and longitudinal research designs.