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Purpose: to determine the features of technical and tactical actions of highly skilled athletes when swimming a distance of 100 meters by front crawl. Material & Methods: analysis and generalization of literary sources, video filming, timekeeping, methods of mathematical statistics. The contingent of subjects consisted of athletes who specialized in a distance of 100 meters in the way of swimming the front crawl and had the level of sports qualification master of sports of Ukraine, master of sports of international grade. Results: dynamics of indicators of technical and tactical skill among highly skilled athletes during their overcoming the 100 meter distance by front crawl has been investigated; characterized by the variability of technical and tactical actions of highly skilled athletes in different parts of the competition distance of 100 meters; determined the degree of influence of speed, pace and "step" of the cycle of rowing movements on the result of swimming a distance of 100 meters using the front crawl. Conclusion: overcoming the distance of 100 meters by the front crawl has its own specifics, which is reflected in changes in the indicators of technical and tactical masterhood; model characteristics of the most influential parameters of technical and tactical actions of highly skilled swimmers can serve as a guideline for improving the training process of athletes depending on their distance specialization.

The purpose of the study was to investigate the acute effect of resisted swimming with different sized added resistances in the kinematic characteristics of the stroke during front crawl swimming. Ten female swimmers participated in the study. They swam 4 trials (25 m) with maximal intensity, without and with small, moderate and large added resistance. Four analog cameras (60 Hz) were used for the recording of the underwater motion of the right hand. The digitization was undertaken using the Ariel Performance Analysis System. For the detailed analysis of the stroke the motion of the hand was divided into four distinct phases: a) glide, b) pull, c) push and, d) recovery. Analysis of variance for repeated measures showed that during resisted swimming the stroke rate, the stroke length and the mean swimming velocity were decreased significantly, while the total duration of the stroke and the relative duration of the pull and push phases were significantly increased. This increase is attributed to the increase of the absolute pull length. On the contrary, no modification was observed in the magnitude of the medial -- lateral displacement of the hand. Moreover, no alterations were found in the mean resultant velocity of the hand during the propulsive pull and push phases. Consequently, these findings suggest that resisted swimming appears to be a specific form of training. [ABSTRACT FROM AUTHOR]