Based on Self-Determination Theory, the present study adopts a helicopter-perspective towards motivating (i.e., autonomy support, structure) and demotivating coaching (i.e., control, chaos). Among five independent samples, consisting of individual and team sport coaches (N = 893; Mage = 37.83 years) and athletes (N = 377; Mage = 17.46 years), Multidimensional Scaling (MDS) analyses were used to examine how a variety of coaching practices reflective of four different coaching styles (i.e., autonomy support, control, structure, and chaos), assessed with a new vignette-based instrument, related to one another.Findings revealed that the (de)motivating practices could be graphically presented within a two-dimensional circumplex, with the horizontal axis representing the level of needsupportive coaching behavior and the vertical axis representing the level of coach directiveness. Moreover, the four coaching styles could be segmented in eight more specific approaches (i.e. clarifying, guiding, attuning, participative, awaiting, abandoning, domineering, and demanding), which formed an ordered sinusoid pattern of correlations, both among each other and in relation to a variety of critical outcomes (e.g. coach need satisfaction, athletes' motivation). It is discussed how a circumplex approach produces both a more integrative and more fine-grained insight regarding (de)motivating coaching behaviour, with resulting implications for practice.

This multi-study paper reports the development and initial validation of an inventory for the Characteristics of Resilience in Sports Teams (CREST). In four related studies, 1225 athletes from Belgium and the United Kingdom were sampled. The first study provided content validity for an initial item set. The second study explored the factor structure of the CREST, yielding initial evidence but no conclusive results. In contrast, the third and fourth study provided evidence for a two-factor measure, reflecting (a) the team's ability to display resilient characteristics and (b) the vulnerabilities being displayed under pressure. Overall, the CREST was shown to be reliable at the between-players and the between-teams level, as well as over time. Moreover, its concurrent validity was verified by linking the characteristics of team resilience with various relevant team processes. Its discriminant validity was established by comparing the CREST measures with individual athletes' resilient traits. In conclusion, the CREST was argued to be a usable state-like measure of team-level resilient characteristics and vulnerabilities. To gain further understanding of team resilience as a process, this measurement could be used in future process-oriented research examining adverse events and sports team's pre-and post-adversity functioning.

Objectives: The present study tested a motivational sequence in which children's goals for leisure-time sport and physical activity (PA) from Goal Content Theory predicted pedometerdetermined PA through behavioural regulation constructs from Self-Determination Theory. Design:Quantitative cross-sectional study.Method: A sample of 1,272 Flemish (Dutch speaking part of Belgium) sixth graders (M age = 11.42 years) filled in a questionnaire on PA goal content, behavioural regulations and pubertal status. Children's height and weight were measured to assess Body Mass Index (BMI). To measure daily PA behaviour, participants wore a pedometer for seven consecutive days.Structural equation modelling was performed to test the proposed motivational sequence and to examine the mediation effect of behavioural regulations towards leisure-time sport and PA on the relation between PA goal content and daily step counts.Results: A structural equation model supported the hypothesized sequence in which intrinsic goals for leisure-time sport and PA predicted children's daily step counts through autonomous motivation towards leisure-time sport and PA. Multi-sample invariance testing revealed that the proposed model was largely invariant across BMI groups, pubertal status and gender. Conclusion:The findings highlight the importance of emphasizing intrinsic goals for participation in leisure-time sport and PA in children aged 10-12 years. By stimulating children to participate in PA and sports by referring to intrinsic goals, children are more likely to enjoy PA, which in turn might increase the likelihood of a regular and long-term PA engagement.

The present manuscript extends previous research on the reciprocal relation between team confidence and perceived team performance in two ways. First, we distinguished between two types of team confidence; process-oriented collective efficacy and outcome-oriented team outcome confidence. Second, we assessed both types not only before and after the game, but for the first time also during half-time, thereby providing deeper insight into their dynamic relation with perceived team performance. Two field studies were conducted, each with 10 male soccer teams (N = 134 in Study 1; N = 125 in Study 2). Our findings provide partial support for the reciprocal relation between players' team confidence (both collective efficacy and team outcome confidence) and players' perceptions of the team's performance. Although both types of players' team confidence before the game were not significantly related to perceived team performance in the first half, players' team confidence during half-time was positively related to perceived team performance in the second half. Additionally, our findings consistently demonstrated a relation between perceived team performance and players' subsequent team confidence. Considering that team confidence is a dynamical process, which can be affected by coaches and players, our findings open new avenues to optimise team performance.

The present study used a sample of team sport athletes (N ¼ 343) to investigate to what extent the leadership quality of the coach and the athlete leaders was related to athletes' team confidence and team cohesion. The findings demonstrated that the leadership quality of both coaches and athlete leaders predicted a unique part of the variance of team confidence and team cohesion. In addition, members' identification with the team was demonstrated to be an important mechanism underlying this relation, thereby supporting the Social Identity Approach to Leadership. We conclude that both coaches and athlete leaders can inspire players to identify with their team. In turn, this feeling of 'us', rather than being a group of I's, predicts a stronger confidence in obtaining team goals and fosters the task and social cohesion within the team. When coaches share the lead with their athletes, an optimal team environment can be created.

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