Manipulating Spatial and Temporal Task Constraints in Small Sided soccer games.

Plaats, J. van der (Jorrit) (2011) Manipulating Spatial and Temporal Task Constraints in Small Sided soccer games. thesis, Human Movement Sciences.

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Abstract

There is a need for a collective variable that captures the dynamics of team sports, such as soccer. This is done from a complex system perspective. Constraints determine the behavior of a complex system. Two new collective variables are proposed; inter team distance (lTD) and surface area difference (SAD). The aim of this study was to evaluate if lTD- and SAD-measures are sensitive to manipulations of spatial and temporal task constraints, in small sided soccer (GK +4v4+GK) games. In addition linear relation and moving correlations between centroids and surface area were also examined. Results show that strong linear relations exist between centroid positions in longitudinal direction. (r>0.85; R2>0.73) Manipulation of the spatial task constraint leads to changes in lTD-measures. When pitch size and dimension decrease, values of lTDmeasures also decrease. Further a crossover effect, between length and width manipulation is found for lTD-X, ITD-Y, LD. No clear effect of the manipulation of the spatial constraint is found. Moving correlation show a higher in phase relation in all centroid measures. When pitch width became smaller, moving correlations in longitudinal direction show a higher percentage in phase relation. It is concluded that lTD can be regarded as a key variable when describing collective behavior in team sports, such as soccer, during small sided games. Decreasing values of lTD-X are accompanied by higher percentages in phase relation in the longitudinal direction. Implying that centroids tend to move more in the same direction, when pitch size decreases. Further the strong correlations in the longitudinal direction of play together with the high percentages in phase relation of the moving correlation, confirms that this can be regarded as the dominant direction.

Item Type:	Thesis (Thesis)
Supervisor name:	Frencken, W.G.P. and Lemmink, K.A.P.M
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 10:52
Last Modified:	25 Jun 2020 10:52
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/1265

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