Encarnación Ruiz Lara

Influence of the efficacy values in numerical equality on the condition of winner or loser in the 2003 Water Polo World Championship

The purpose of this study was to find the efficacy values in the playing micro-situations in numerical equality with or without ball possession and to analyze the relation between these and the condition of winner or loser. We analysed the matches of the X World Championship of Water polo which did not end in a draw. Playing micro-situations in numerical equality were evaluated by means of coefficients, which obtain efficacy values. Some differences were revealed, in male category, in the following coefficients with possession: concretion, definition, resolution, accuracy and blocked shots received (p<.001) and precision (p=.001). Without possession: concretion, definition, resolution, accuracy and blocked shots made (p<.001) and precision (p=.001). In female category with the following coefficients with possession: concretion, definition and precision (p<.001), resolution (p=.001), possibility (p=.005) and accuracy (p=.017). Without possession: concretion, definition and precision (p<.001), resolution (p...The purpose of this study was to find the efficacy values in the playing micro-situations in numerical equality with or without ball possession and to analyze the relation between these and the condition of winner or loser. We analysed the matches of the X World Championship of Water polo which did not end in a draw. Playing micro-situations in numerical equality were evaluated by means of coefficients, which obtain efficacy values. Some differences were revealed, in male category, in the following coefficients with possession: concretion, definition, resolution, accuracy and blocked shots received (p<.001) and precision (p=.001). Without possession: concretion, definition, resolution, accuracy and blocked shots made (p<.001) and precision (p=.001). In female category with the following coefficients with possession: concretion, definition and precision (p<.001), resolution (p=.001), possibility (p=.005) and accuracy (p=.017). Without possession: concretion, definition and precision (p<.001), resolution (p=.001), possibility (p=.005) and accuracy (p=.017); taking as a reference a value of p<.05. To conclude with, we can say that in twelve out of the fourteen efficacy coefficients proposed for evaluating the playing micro-situations in numerical equality with or without ball possession in male and female water polo there are significant differences between the condition of winner or loser.

Efectes de tenir la primera possessió de la pilota sobre els marcadors parcial i final en els Campionats del Món de Waterpolo de 2005 i 2007

L’objectiu d’aquest estudi va ser analitzar la influencia de tenir la primera possessio de la pilota sobre els marcadors parcial i final en waterpolo masculi i femeni. Els participants van ser 416 homes de 32 equips masculins i el mateix nombre de dones del mateix nombre d’equips, que van prendre part en els Campionats del Mon de 2005 i 2007. La mostra va estar formada per les accions d’inici de cadascun dels quatre periodes dels 192 partits enregistrats, la qual cosa va suposar un total de 768. Es va utilitzar la metodologia observacional, mitjancant un disseny de tipus nomotetic, seguiment i multidimensional. El 45,7 % dels equips masculins i el 51,8 % dels equips femenins que van aconseguir la primera possessio de la pilota van gaudir d’un resultat parcial favorable al llarg dels periodes. Els equips femenins que van guanyar mes del 50 % dels partits van agafar la primera pilota en mes de dos periodes. Aconseguir la primera pilota en un nombre mes gran de periodes es relaciona amb un marcador parcial favorable en ambdues categories i amb un marcador final favorable en la categoria femenina.