Sprinting and dribbling differences in young soccer players: a kinematic approach.

Sprinting and dribbling a ball are considered essential for success in team sports, such as soccer. The purpose of the present study was to examine straight line (SL) and changes of direction (COD) sprinting and dribbling abilities after a standing and a flying starting position. Twelve amateur U12 male soccer players participated in the study. The participants were tested in four different sprinting conditions. The first consisted of 15 m SL sprinting and dribbling test by standing position; the second consisted of 15 m SL sprinting and dribbling test by flying start. The third condition consisted of 15 m COD sprinting and dribbling test by standing position, and the fourth condition consisted of 15 m COD sprinting and dribbling test by flying start. T-tests analysis indicated significant differences between SL sprinting and dribbling sprinting tests (P < 0.05) and between standing and flying start positions (P < 0.05). Step frequency was higher for sprinting tests (P < 0.05). Moreover, the results showed that step length was longer when players had a standing position (P < 0.05). These findings emphasize the importance for trainers to add parts without ball, focused on the development of certain fitness and running components.