Objective of the study. To compare the biomechanical characteristics of the running at 100 and 200 metres of elite athletes, to determine the changes occured with the lengthening of the distance. Methodology of the study. There are analyzed spatio-temporal and angular characteristics of the running technic, contained in IAAF Biomechanical report of 100 and 200 metres finals in the World Championship 2017, eight athletes in each group. Statistical data analysis was determined by program Statgraphics Centurion, the significant of differences was determined by Independent Samples T-test. Results of the study. There are statistically significant difference reveals in men and women 100 m running in step length, ankle joint in take off phase and the horizontal distance between the ground contact point at toe-off and the Centre of Mass. In the 200 run besides these parameters the difference is observed in contact time, the angle between the thighs at touch down, the trunk angle and knee angle at toe-off. Conclusions. The speed reduction in men's and women's 200 metres cause by decreasing in step rate with decreasing in contact and flight time. The range of movements and most of the angular characteristics of the running technique in the top speed phase have similar values with 100 m that provide the maintenance of the step length.
SPRINTING, SPRINTING TECHNIQUE, BIOMECHANICAL ANALYSIS OF RUNNING TECHNIQUE, SPATIAL CHARACTERISTIC OF RUNNING TECHNIQUE
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