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Annemarie Schumacher Dimech and Roland Seiler

Social anxiety is a common psychological complaint that can have a significant and long-term negative impact on a child’s social and cognitive development. In the current study, the relationship between sport participation and social anxiety symptoms was investigated. Swiss primary school children (N =201), parents, and teachers provided information about the children’s social anxiety symptoms, classroom behavior, and sport involvement. Gender differences were observed on social anxiety scores, where girls tended to report higher social anxiety symptoms, as well as on sport activity, where boys engaged in more sport involvement. MANCOVAs with gender as covariant showed no differences in social anxiety symptoms between children involved in an extracurricular sport and those not engaged in sport participation. Nevertheless, children engaged in team sports displayed fewer physical social anxiety symptoms than children involved in individual sports.

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Gerda Jimmy, Roland Seiler and Urs Maeder


Accelerometry has been established as an objective method that can be used to assess physical activity behavior in large groups. The purpose of the current study was to provide a validated equation to translate accelerometer counts of the triaxial GT3X into energy expenditure in young children.


Thirty-two children aged 5–9 years performed locomotor and play activities that are typical for their age group. Children wore a GT3X accelerometer and their energy expenditure was measured with indirect calorimetry. Twenty-one children were randomly selected to serve as development group. A cubic 2-regression model involving separate equations for locomotor and play activities was developed on the basis of model fit. It was then validated using data of the remaining children and compared with a linear 2-regression model and a linear 1-regression model.


All 3 regression models produced strong correlations between predicted and measured MET values. Agreement was acceptable for the cubic model and good for both linear regression approaches.


The current linear 1-regression model provides valid estimates of energy expenditure for ActiGraph GT3X data for 5- to 9-year-old children and shows equal or better predictive validity than a cubic or a linear 2-regression model.

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Jens Kleinert, Jeannine Ohlert, Bert Carron, Mark Eys, Deborah Feltz, Chris Harwood, Lother Linz, Roland Seiler and Marion Sulprizio

Working with teams and training groups is a common and major challenge for applied sport psychologists. This document is a position statement on the rationales, methods, and procedures of team-focused approaches in the practice of sport psychology. Furthermore, practice recommendations and research desiderata are discussed. To develop the paper, a consensus conference with nine experts from North America and Europe was held in Spring 2010. First, the paper presents the rationale for team-focused interventions and addresses the concepts of team cohesion, team efficacy, team potency, and a task involving leadership style. Second, the contributions of sport psychologists to enhancing group functioning are discussed, including methods for enhancing interpersonal skills, team climate, and coach athlete relationships. Third, determinants of how sport psychologists decide procedure and build trust in working with teams are articulated. Finally, the consensus group recommends an intensified effort to examine the effects and practice applicability of theory-driven, ecologically valid interventions.