Abstract

STOFFELS, Fernanda et al. Running kinematics analysis of young sprinters . Rev. Port. Cien. Desp. [online]. 2007, vol.7, n.1, pp.59-67. ISSN 1645-0523.

The purpose of this study was to describe the kinematics characteristics of the race of the young sprinters of Santa Maria city and region in the phase of maximum speed. The subjects of this study were 7 athletes, 4 male and 3 female, with ages ranging from 14 to 18 years. To the kinematical analysis it was used Peak Performance System, with 2 high frequency cameras operating at 180 Hz. The movements of one stride (2 contacts) were analyzed in the maximum velocity phase. Each subject performed three trials. The results found show a similarity of the variables as angle of trunk and angle of limb at instant of take-off, with the values found in the literature to sprinters of world level. However, in spite of presenting some similar characteristics relatively to elite athletes, the young sprinters are below of their behavior in variables considerate of great importance to the performance in sprint running, such as, stride length and stride rate, distance of contact, vertical oscillation of CG and time of support phase and time of flight phase.Those differences may be related mainly with both physical characteristics and level of training of the athletes and could be associated with the age and time of practice of the young sprinters.

Keywords : sprint running; kinematics; young sprinters.

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