期刊名称：Facta Universitatis : Series Physical Education and Sport
印刷版ISSN：1451-740X
出版年度：2006
卷号：4
期号：02
页码：103-114
出版社：University of Niš
摘要：The study analyzed and identified the major kinematic parameters of the phases of the sprint start and block acceleration that influence the results of sprint running. The biomechanical measurements and kinematic analysis were performed on the best world's best sprinter during his preparation for the European Athletics Championship in Goetebourg in 2006. In this competition, Mati栏sovnikar won the bronze medal in the 100-metre run and set the Slovenian national record with 10.14 s. The kinematic parameters of the sprint start were established on the basis of a 2-D kinematic analysis, using a high-speed camera with a frequency of 200 frames/sec. The measurements of the block acceleration were made by means of the Opto Track technology and an infra-red photo cell system. The athlete performed five, 20m low-start sprints under constant and controlled measurement conditions. The subject of the study was the set position from the point of view of the height of the total body's centre of gravity (TBCG), the block time at the front and rear blocks, block velocity, the block face angle, the velocity of the TBCG in the first three meters and the kinematic parameters of block acceleration in the first ten steps. The study showed the following were the key performance factors in the two phases of sprint running: medium start block distance, block velocity, low block face angles, first step length, low vertical rise in the TBCG in the first three meters of block acceleration, contact phase/flight phase index in the first ten steps and the optimal ratio between the length and frequency of steps.
关键词：sprint start, block acceleration, technique, kinematics, top sprinter
