Performance analysis of front crawl through kinematics
Abstract
Objective: The objective of this study was to analyze the crawl performance using the kinetics after training intervention. Methods: The sample consisted of 36 swimmers of both sexes between nine and 19 years of age. The study consisted of two stages, with four months between the two, in which anthropometric evaluations were carried out. Body mass (BM), height (H), sitting height (SH), span (S), hand length (HL), neck perimeter (NP) and skin folds (SD) to obtain percentage of fat (%F), and 50-meter and 100-meter swimming-pool crawl in a 25-meter pool, in which the variables total time (TT), partial time (TP), stroke frequency (SF) and stroke length (SL) every 25 meters. Statistical analysis of the data was performed using the t-test in the comparison of the changes during the period of the research, all the stipulated analyzes with a significance level of 0.05. Results: There was an increase in the anthropometric variable BM, H, SH, S and NP, and a decrease in SD and %F during intervention. In the post-test, TT decreased, CB increased and FB decreased in the 50 and 100-meter tests. Conclusion: Better combinations of SL and SF can improve crawl-like sports performance in swimming children and adolescents.
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