Objectives 1 stage A. Screening of Flemish boys and girls of primary (6-11jaar) on both the physical (K, S, U, L) as purely coordinative properties. Compared with the skills of their peers from other countries where figures are available and valid (cross-sectional aspect). B. To determine the extent to which evolve these basic properties in children who may or may not competing in sports (semi-longitudinal aspect). C. Correlation of the five basic properties to one another in order to ascertain the extent to which the coordination is related to KSUL. D. Comparison of the cross-branch of sport skill level of a) children who do or not to competitive sports, and b) children who practice various competitive sports. E. Analysis of demographic variables (in sports, degree of fsieke activity, support of environment, infrastructure, possibly supplemented by a limited (sports) psychological screening). Two applied phase A. Consideration to this, especially the coordinative skills are present in young people who are already in an advanced stage of competitive sport, and compare with their peers in mainstream education. B. The relationship between the properties mapping to the students of sport schools, with emphasis on overall coordination is not necessarily sport specific. C. From this analysis provide a foundation for continuing to promote a versatile sports development in the sport schools. D. The current criteria for access to the topsportschools keys to scientific screening, in order to refine the process and validate.