Kinematic and physiological parameters on the lactate threshold level and jogging practice of men over forty and their running tactics as well as the result of starting in the marathon
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2009, Vol 19, Issue 48
Abstract
[b]The aim of the study.[/b] Evaluation of the possibilities of using kinematic and physiological parameters, established on the level of the lactate threshold, as well as the training practice by men over forty to predict results and to prepare tactics in a marathon.[b]Material and methods.[/b] The study covered 12 men over forty (40–49 years) practicing jogging. Their training practice in amateur sport lasted from 1 to 11 years. One week before the start each of the men underwent a lactate threshold test during a 6-minute interval run on a running track [1] in order to evaluate their personal running speed and the dynamics of the acidity increase after exceeding the lactate threshold. It was assumed that the above-mentioned parameters would be points of reference for preparing tactics of the marathon run. During the research, cardiovascular system reactions and the time of covering every 5 km leg of the 42 195 m distance were registered in a constant way on the sport-tester. Sport results achieved every day were also considered. In the analysis of the collected material quantitative comparison covered: the record results of the subjects who had participated in marathons before and the results achieved during test competitions and training practice, as well as the running pace at every 5 km leg of the marathon in relation to the speed established on the anaerobic threshold during the test conducted a week before. Using the Pearson’s correlation coefficient and the regression equation the strength of relations and the relation between: the running speed established before the competition in the anaerobic threshold test, the average marathon speed of the subjects, the highest difference level from the imposed speed at the early legs of the marathon (pace imposed by tactics) and the lactate increase after exceeding the lactate threshold in the lactate threshold test were calculated.[b]Results.[/b] In the marathon test start, better results were achieved by the competitors for whom it was not the first start in the competition and who had a longer training practice (r =–0,81). The improvement of personal best achievements could result in short-term and long-term training effects. All subjects presented a high convergence of the speed established on the lactate threshold level and the imposed (tactical) marathon speed. It was confirmed by the correlation coefficient between the above-mentioned variables (r = 0,97). The analysis of the running pace on every 5 km leg shows that only well-prepared competitors exhibited slight oscillations in the imposed “threshold speed” until the 35th km of the marathon, after which came the typical moment of speed decrease. A high correlation between the pace range and the dynamics of the increase of the lactic acid after exceeding the lactate threshold established in the pre-competition test by Zoladz (r = 0,45).[b]Conclusions. [/b]The sport level in the marathon presented by men over 40 practicing jogging is derived from the training practice and the improvement of personal best results may result from the training state influenced by short-term and long-term training stimuli. There is a possibility of using kinematic and physiological parameters in physiological tests of the anaerobic threshold in order for the men practicing marathon runs as amateurs to prepare running tactics and to predict results in the marathon. Further studies leading to the explanation of the incapacity of to maintain the imposed “threshold speed” of running after the 35th km observed in the studied group of marathoners should be carried out.
Authors and Affiliations
Konrad Rembiasz, Wacław Mirek, Edward Mleczko
Keywords
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