The purpose of this study was to examine the impact of a hybrid Sport Education-Invasion Games Competence Model (SE-IGCM) unit application on students' improvements in decision making, skill execution and overall game performance, during a soccer season. Twenty-six fifth-grade students from a Portuguese public elementary school participated in a 22-lesson season, in which pre-test, post-test and retention test measures were analyzed through the instrument developed by Blomqvist et al. (2005). Results showed that teaching a soccer unit in a SE environment sustained by the learning tasks structure provided by the IGCM offered students a chance to improve skill execution, as well their tactical decision making. The overall results showed a strong impact on students' learning, especially for girls and low skill-level students, fostered by the equitable participation. The retention test was particularly important to assess gains of students of all skill levels, particularly the low-skilled students.

This review aims to examine the most significant research regarding the development of talent in sport, with a focus on the quantity and type of practice necessary for the attainment of expertise. A total of 54 peer-reviewed empirical articles were collected and analysed for their content. The literature reveals considerable evidence demonstrating that both early specialization and early diversification can lead to expertise development. However, the contrasting views of deliberate practice and deliberate play do not provide a sufficient spectrum of different learning activities for talent development. Furthermore, the content analysis highlights some inconsistencies in the criteria used to characterize different types of learning activities, pointing to the need for a more rigorous and detailed characterization of activities that affect talent development throughout the lifespan. Finally, this review underscores the need for different methodological approaches to complement athletes' perceptions of their past practice experiences gathered from retrospective interviews. The potential value of using systematic observations to provide a detailed examination of the microstructure of different learning activities is discussed.

The aim of this study was to assess the effects of quality of opposition and match status on technical and tactical volleyball performances, as measured by block, attack, serve, and set actions related to the tasks, space, players, and efficacy of selected game actions. Twenty-five matches from the men's World Cup 2007 were notated and through cluster analysis were classified as "high" (HIGH), "intermediate" (INT) or "low" (LOW) quality. The difference between points scored and points allowed was used to define match status. Multinomial logistic regression identified an association of match status with: set direction (likelihood ratio test [LRT] = 15.5, P = 0.017) and block typology (LRT = 9.6, P = 0.047) in HIGH vs. HIGH matches; attack player (LRT = 17.4, P = 0.026) and block typology (LRT = 9.2, P = 0.010) in LOW vs. LOW matches; and serve type (LRT = 17.4, P = 0.002), block strategy (LRT = 53.7, P <0.001), and serve efficacy (LRT = 26.0, P = 0.001) in HIGH vs. LOW matches. Results suggest that volleyball teams took more risky decisions in unbalanced situations. They also carried less risk through technical and tactical decisions in balanced and moderate situations whether they had the advantage or not. Therefore, strategic behaviour was affected by the interaction of quality of opposition and match status, providing a better understanding of volleyball game performance and new insights for practice, competition, and research.