Psychometric Validation of the Tactical Assessment Instrument in Football for Use in Physical Education and with Youth Sport Teams.

Recently, the Tactical Assessment Instrument in Football (TAIS) was developed to address football's tactical requirements in terms of game phases, learners' roles, and organizational levels of play. In this study, we sought to evaluate the psychometric properties of this existing instrument in the Physical Education (PE) context and for youth sport teams (ages 8-12 years). Our research design involved: (a) participants playing 37 football games, (b) assessing participants via observation with the TAIS and (c) conducting psychometric analysis on the obtained assessment data. For the psychometric analysis, we carried out our work in four phases: (a) a statistical analysis of the evaluation criteria, (b) analysis of the instrument's structural dimensions, (c) internal item reliability analysis, and (d) provision of evidence for external validity. Participants were 592 children (156 girls, 436 boys; ages 8-12 years) from 74 PE classes or sport teams (from three institutional contexts - schools, community-based sports, and sports clubs) in Spain. We selected 12 tactical criteria and grouped them into four theoretical dimensions (appropriate attack, inappropriate attack, appropriate defense, inappropriate defense) to confirm the instrument's structural dimensions. The Cronbach alpha and Omega McDonald coefficients were greater than .70. The TAIS discriminated between participants from the three institutional contexts, offering evidence of the instrument's external validity. Thus, the TAIS now has sufficient psychometric support for assessing learning of football tactics in PE and youth sport teams. This instrument facilitates an ecological assessment of youth players' understanding of football tactics through four theoretical tactical dimensions and 12 criteria involving information about four learners' roles (both attack and defense, on- and off-the-ball) and three organizational tactical levels of play (whole team, small groups of learners, and individual learners).

A Systematic Review of Teaching Games for Understanding Intervention Studies From a Practice-Referenced Perspective.

According to the theory of practice architecture, every practice enacted in classrooms is a result of interaction between social, physical and spatial elements. In relation, from a practice-referenced perspective, it is necessary to know which teaching-learning implementation features could help teachers/coaches/researchers to assemble Teaching Games for Understanding (TGfU) interventions in relation to the institutional environment. Purpose: This review aimed to explore from a practice-referenced perspective how TGfU researchers reported their interventions based on the teaching-learning implementation features (intervention design as a function of the context, intervention length, lesson content, basic lesson elements, lesson alignment, teacher/coach experience with the approach, and lesson validation and treatment verification) and their association with learners' outcomes. Results: We found 20 studies that included some of the teaching-learning implementation features, but none of the studies included all of these features. We also found that studies of TGfU measured and reported learners' outcomes in a variety of ways. This creates difficulties for drawing conclusions about the relationships between the presence of teaching-learning implementation features and student learning outcomes. Conclusion: Further TGfU interventions should be planned to consider the following: (a) that lessons need to be designed as a function of the context; (b) the number of intervention lessons, their duration and the duration of each lesson task; (c) the concrete tactical and technique contents and goals per lesson; (d) the modified games, questions and achievable challenges as basic lesson elements; (e) the alignment between the basic lesson elements and the structure of lessons, based on the goals of each lesson; (f) that teachers/coaches need to have previous experience in TGfU and be trained on the specific study purpose; (g) that lessons should be validated before implementation and verified during intervention; (h) researchers should regulate the ways in which learners' outcomes are measured and reported within TGfU studies.

Design and Validation of the Tactical Assessment Instrument in Football (TAIS).

The focus on tactics has made assessment more difficult due to the lack of knowledge in the topic and the limitations of current tactical assessment instruments. Purpose: To design and validate a tactical assessment instrument in youth football (TAIS) following an exhaustive, ecological and meticulous process and dealing with the limitations found in the literature. Method: The design was divided in two stages related to its development and validation. During the development stage: (a) a preliminary list of criteria was determined through a literature review; (b) the criteria were delimited through an exploratory observation; and (c) the adequacy of the criteria was determined by consulting experts. In the validation stage: (a) content and comprehension validity were obtained by consulting experts and through a systematic game observation; (b) construct validity was obtained by comparing the tactical outcomes from two groups with different skill levels; (c) criterion validity was established by comparing the tactical outcome using Game Performance Assessment Instrument and the present instrument, and (d) the reliability was obtained through inter-rater reliability. Results: The research process showed that the instrument is a valid and reliable tool comprised of 22 criteria to assess tactical outcomes in 8-12 years old youth football. Conclusion: The TAIS presents several advantages in practical terms with respect to assessment. First, it allows assessment of the three tactical levels nested in the unit of observation. Second, it considers all the player roles. Third, results are presented without general indexes. Fourth, it can be used to assess participants from all the institutional contexts. Finally, it includes contextual variables.

Grouping Students by Skill Level in Mini-Volleyball: Effect on Game Performance and Knowledge in Sport Education.

The purpose of this study was to explore any differences in game performance variables and knowledge among a cohort of high school students who participated in either homogeneous or heterogeneous skill level groups (N = 126) across a 12-lesson mini-volleyball sport education unit of study. This study followed a mixed-methods approach using a quasi-experimental pre-test/post-test design. The quantitative variables analyzed were decision making, skill execution, game performance, game involvement, and game knowledge. We also evaluated students' performance qualitatively, employing two methods: (a) experts' analysis of students' game performance, and (b) students' and teachers' perceptions of students' performance. We analyzed quantitative data through a series of paired samples t-tests comparing pre- and post-test scores according to the grouping strategy. Students became more competent in their game play and more knowledgeable in their technique, the sport's rules, tactical awareness, and general game knowledge. However, grouping students by skill level had no impact on gains in game performance variables and knowledge. Although sport education literature shows a preference for heterogeneity in ability-based grouping, within our data both heterogeneous and homogenous groups of higher and lower skilled students achieved improvements in game performance and knowledge, leading us to suggest that teachers who are interested in grouping students to create a meaningful learning experience should consider criteria other than student ability.

A Teaching Games for Understanding Program to Deal With Reasons for Dropout in Under-11 Football.

Young players report that they dropout of organized football due to excessive emphasis on technical execution, low success, and the lack of autonomy and motivation experienced by players during training sessions. Purpose: To determine whether a TGfU intervention during a youth football program led players to improve in variables related to dropout. That means tactical-technical competence (decision-making, skill execution), success (successful game performance), autonomy (number of decisions made, player autonomy, number of game involvements, player participation), and motivation (enjoyment, intention to be physically active). Method: Twenty under-11-players and two coaches were recruited from 17 clubs. A pretest-posttest design with a multi-method approach was used. Coaches were trained and mentored in TGfU. Data were collected using Game Performance Assessment Instrument, enjoyment and intention to be physically active scales, and two focus groups with the players and the coaches. Results: Players improved in decision-making, skill execution, successful game performance, number of decisions made, number of game involvements, and intention to be physically active (p < .05). Participants attributed the results to the TGfU pedagogical features emphasized during the coaches' training and mentoring. Conclusion: Considering the reasons for dropout in football, in terms of excessive emphasis on technical execution, low success, and the lack of autonomy and motivation experienced by players, TGfU could be a useful pedagogical approach for teaching-learning organized youth football. The TGfU pedagogical features emphasized during coaches' training and mentoring could be crucial to obtain these results due to the fact that they were the sub-themes highlighted during the focus groups.

Effects of Two TGfU Lessons Period on Game Performance, Knowledge and Psychosocial Variables in Elementary Physical Education.

The purpose of the present work was to explore whether fourth-grade physical education students improved their game performance, knowledge and psychosocial variables with Teaching Games for Understanding (TGfU) to a greater extent after an eight-lesson period in comparison to a 14-lesson period. The study followed a mixed-methods approach in which the design consisted of a first assessment, a second assessment after Lesson 9 (eight-lesson period) and a third assessment after Lesson 16 (14-lesson period). A TGfU floorball intervention was carried out between assessments. The participants (n = 40) were in their fourth year of elementary education. According to students' background and setting, we decided to implement three broad and interrelated strategies to enact the intervention built on the TGfU pedagogical features. Data were collected through Game Performance Assessment Instrument, knowledge questionnaire, enjoyment, perceived competence and intention to be physically active scales and semi-structured interviews. Quantitatively, Friedman's χ2 was used to explore differences in the variables and Wilcoxon's Z post-hoc comparisons were performed to determine: (a) first-second and first-third assessment differences; and (b) second-third assessment differences. Qualitatively, data were open and axial coded line-by-line and incident-to-incident in sub-themes. The quantitative results show no significant differences between the two periods (p > 0.05). However, there were improvements after both periods compared with the first assessment (p < 0.05). The qualitative information supported that the pedagogical strategies implemented could be key to explain the similarities between the two practice volumes. In conclusion, the amount of practice should not be considered as the only variable in the design of interventions with TGfU.

Effect of Teaching Races for Understanding in Youth Sailing on Performance, Knowledge, and Adherence.

PURPOSE: The purpose of this study was to know whether an intervention using an adaptation of the teaching games for understanding approach (named teaching races for understanding [TRfU]) led participants to improve skill execution, decision making, race performance, race involvement, race knowledge, enjoyment, intention to continue practicing sailing, and perceived competence. METHOD: Participants were 67 children from a randomly selected sailing school (Mage = 9.32 years, SD = 2.60 years) and 2 coaches. We designed and validated the TRfU lessons, and 1 coach was trained in the approach. The TRfU group participated in 11 lessons. This study followed a mixed-methods data approach. Quantitative data were evaluated using a quasiexperimental pretest-posttest design with a control group. The intervention consisted of teaching sailing using the TRfU approach. Children and coaches' perceptions were evaluated through an interview on completion of the study. Data were collected using an adaptation of the Game Performance Assessment Instrument, a knowledge questionnaire, 2 psychological scales, and interviews with children and coaches. RESULTS: The TRfU group showed statistically significant improvements in skill execution, decision making, and race performance compared with the control group, as well as significant improvements in race involvement, race knowledge, and enjoyment (ES = 0.64-2.63). CONCLUSION: Teaching races for understanding can be used in sailing to improve students' capacity to reflect and connect theoretical knowledge with their motor performance in the race.