Trunk stability, muscular fitness and sport performance level in competitive judokas - López Valenciano, A.; Barbado, D.; Juan Recio, C.; Montero Carretero, C.; Dieën, J. H. V.; Vera Garcia, F. J. (19th Annual Congress of the European College of Sport Science (ECSS), Amsterdam, 2. - 5. July 2014, 2014)