An intervention program based on team building during tactical training tasks to improve team functioning.

The study aimed to analyze the effects of an intervention program based on team building developed in technical-tactical training tasks in football. Specifically, it examined the benefits of the intervention in variables related to the conceptual model of team building: role clarity, team identification, intra-team communication, cohesion, intra-group conflict, commitment to the team, inside sacrifice, transactive memory systems, collective efficacy, and perceived performance. The participants were 51 young elite footballers divided into an experimental group ( = 27) and a control group ( = 24). The methodological design was quasi-experimental with a duration of 8 weeks. The data were collected three times: pretest, posttest, and follow-up. The results showed differences favoring the experimental group compared to the control group after the implementation of the intervention program in the following variables: team identification ( < 0.001), role clarity ( < 0.001), intra-team communication ( < 0.001; except distinctiveness), group cohesion ( < 0.05), social conflict ( = 0.001), commitment to the team ( < 0.001), inside sacrifice ( < 0.001), transactive memory systems ( < 0.01; except coordination), collective efficacy ( = 0.02) and team performance ( = 0.001). Consequently, the application of team-building strategies incorporated into specific technical-tactical training tasks in football seems to improve group dynamics in sports teams.