The technique of race walking of contestants presenting the world highest level
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2007, Vol 17, Issue 38
Abstract
The purpose of the work. Biomechanical analysis between ground reaction forces (GRF) and vertical oscillations of the center of body mass of professional race walkers.Methods and resources. This article is a study focused on a description of individual techniques and strategies put into practice by an Olympic and World record holder as well as a group of three best Polish race walkers (distance 20 and 50 kilometers). The research was done with the help of the three-dimensional motion analysis system Vicon connected in one line with the dynamometric platform Kristler. The apparatus recorded race walking with an average steady speed of 2,35 ± 0,13 m/s. Basing on a three-dimensional reconstruction of contestants’ bodies movements the arithmetic averages of COG vertical oscillations and corresponding to them mean values of vertical and horizontal components of GRF were calculated. The results were presented as relative indexes.Results. The research proved that all examined contestants showed individual schemes in their own movement techniques. Distinct differences in the work of the limbs of every race walker were also noticed.Conclusion. Race walkers of the world highest level not always master such a good technique which enable them to reduce energetic costs of sport walking. Asymmetrical work of their lower limbs may reflect either functional domination of one limb or technical mistakes. Both of them should be corrected during the training process.
Authors and Affiliations
Wiesław Chwała , Wacław Mirek , Edward Mleczko , Tadeusz Ruchlewicz
Keywords
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