The Dynamic of Movement Indicators in Speed Task, Coordination, Mobility and Resistance on the Junior Semifond Runners III(14-15 Years) Based on the Establishment of an Optim Report between the Volume and the Intensity of the Effort during an Year of Training - Sava, Lucica (Annals of “Dunarea de Jos” University of Galati. Fascicle XV, Physical Education and Sport Management, 2014)