F. A. Iturriaga, P. G. Marín, P. Hernández, E. S. Doncel
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Effects of rules changes on shots dynamics in water polo world championship 2003-2013
The aim of this study was to analyze the influence of rules changes in water polo on throws dynamics in numerical equality, counterattack and powerplay. The performance indicators observed in the Women’s and Men’s World Championships of 2003 and 2013 were compared. The observational design was nomothetic, multidimensional and follow-up. 8765 throws were analyzed, 4112 in the 2003 championship and 4372 in the 2013. In the women’s competition, the rules changes influenced the following performance indicators of the numerical equality: frecuence (p <. 001) and technique (p =. 001); in counterattack: frecuence (p <. 001), distance (p <. 001) and efficacy (p =. 003); and in numerical desiquality: frecuence (p <. 001), distance (p <. 001), position (p =. 016) and technique (p =. 001). In the men’s competition the indicators that showed dependence with the rules changes were the distance in counterattack (p =. 001) and powerplay (p <.001), and the technique in powerplay (p =. 036). In conclusion, the observational methodology allowed to verify the different effects in the throws dynamics caused by the new rules in both gender.
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The main objective of JPES is to unite specialists from different fields, including sport, physical activity, kinesiology, education, health and nutrition, to provide the opportunity for multidisciplinary debates and comprehensive understanding of how physical activity influences human life. Researchers from areas that are related to sport and health are invited to publish their cutting-edge research and its practical applicability. Our target group of expert specialists includes academic researchers, kinesitherapists, physical education and sports teachers, physicians in sports medicine, psychologists, nutritionists, coaches and any other researchers involved in the sports field. JPES aims to act as a stimulus and a dissemination instrument for the research activity of Romanian and foreign investigators. JPES primarily publishes articles in the following fields: the natural sciences of sport, social and behavioral sciences and humanities, sports management, sports medicine, sports pedagogy and sport itself. The journal also aims to facilitate and enhance communication across all sub-disciplines of the sport sciences. The journal awaits original papers, review articles, technical reports and short communications that contain new insight into any aspect of the sport sciences that have not been previously published and are not under consideration for publication elsewhere.
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