Vol. 8, Issue 1, June 2012.


Filipe Clemente1, Micael Couceiro2, Fernando Martins3,4, Gonçalo Dias1, and Rui Mendes4,5
1RoboCorp, Faculty of Sport Sciences and Physical Education – University of Coimbra, Portugal
2RoboCorp, Engineering Institute of Coimbra –  Polytechnic Institute of Coimbra, Portugal
3Instituto de Telecomunicações, Covilhã, Portugal
4RoboCorp, Coimbra College of Education –  Polytechnic Institute of Coimbra, Portugal
5Interdisciplinary Centre for the Study of Human Performance – Lisbon Technical  University, Portugal


doi: 10.5550/sgia.120801.en.013C  
COBISS.BH-ID: 2934040
UDK: 796.332.093.1 



FULL TEXT (.pdf)

The task constraints are prevalent elements used by coaches to train their players in sports training (Araújo, 2006; Newel, 1986). The scope of this study focuses on the analysis of spatial occupation of the attacking player in the practice space, when subjected to certain instructional constraints, on 1v1 soccer sub-phase. This study analyzed 11 soccer players (17.91 ± 1.04 years old) with 8.60 ± 1.52 years of practice. The heat maps presented differences on the occupied field surface in the various practice conditions. The analysis of variance of the duration of the offensive attempt also presented statistical differences within the various practice conditions (F(2, 327) = 30.776;  
p = .001). Results suggest that in risk situations the attacker tends to promote the space-time symmetry. On the other hand, when the instruction to keep the ball was given, unlike the risk constraint, there was a lateralization of the action, increasing the variability and dispersion of the attacker’s trajectories. This study demonstrated the relevance of manipulating instructional constraints.


Key words: Task Constraints, instruction, soccer, spatial occupation, heat maps.



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