program

POSTER ABSTRACTS – FRIDAY, 22 MAY 2015Discussion: Possession games have higher stimulus for aerobic conditioning (meterage, meanvelocity and % maximum heart rate). Higher magnitude accelerative load is apparent in SSG, witheccentric deceleration distance and frequency greater in possession games. The team of 4 playersdoes not differ in acceleration profiles in relative terms. The team of 6 experiences lower levelloading that may be used as a lesser stimulus for recovery. Conclusion: These data suggest loadingoutputs are contextual and influenced by conditions implemented for different SSG formats. IMAmay supplement heart rate and RPE data to discriminate between formats. Keywords: GPS,Training LoadP13.03Quality of tactical behaviours of soccer players according to positional roleGuilherme Machado(1), M Padilha(2), I Teoldo da Costa(1)(1) Federal University of Viçosa, Centre of Research and Studies in Soccer, Brazil(2) University of Porto, Faculty of Sport, Porto, PortugalThe present study examines how soccer players' positional roles influence the quality of tacticalbehaviours. The sample comprised 268 U-17 Brazilian youth soccer players. The System of tacticalassessment in Soccer (FUT-SAT) was used to collect and analyze data. It is a system used to assessthe tactical behaviour of soccer players according to the ten core tactical principles of soccer,categorizaed into five offensives principles: penetration; offensive coverage; width and length;depth mobility and offensive unity; and five defensive principles: delay; defensive coverage;balance; concentration and defensive unity. The tactical behaviour was assessed through thepercentage of success in each principle. The players were grouped according to the followingpositional roles: defenders, midfielders and forwards. Data distribution was verified throughKolmogorov-Smirnova's test. One-way ANOVA was performed to compare mean values betweenthe three groups. Results displayed differences in two of the tactical principles. The defensive unitywas better performed for defenders (81.31±16.99) and midfielders (77.79±17.50) in comparison tothe forwards (69.71±22.97). Regarding the principle of balance, forwards (59.78±25.71) performedworse than defenders (71.03±23.71). These results are related with the specific demand of defensiveand midfielder players, who are more likely to perform in the game than forwards. Consequently, itmay be that defenders and midfielders had developed better know-how in these principles inrelation to the tactical behaviour. Therefore, it is concluded that the quality of tactical behaviours ofsoccer players was influenced by their positional role.259