The breaststroke kick is responsible for a considerable portion of the forward propulsion in breaststrokeswimming. The aim of this study was to measure selected anthropometric variables and functional properties of aswimmer’s body: length of body parts; functional range of motion in the leg joints and anaerobic power of the lowerlimbs. Chosen kinematic variables useful in the evaluation of swimming performance in the breaststroke kick wereevaluated. In the present research, swimming speed using breaststroke kicks depended to the largest extent on anaerobicendurance (0.46, p < 0.05 partial correlations with age control). In addition, knee external rotation and swimmingtechnique index had an impact on swimming speed and kick length (both partial correlations with age control 0.35, p <0.08). A kinematic analysis of the breaststroke kick hip displacement compatible with horizontal body displacement wassignificantly negatively correlated with foot slip in the water opposite to body displacement (partial correlations: withleg length control -0.43, p < 0.05; with shank length control -0.45, p < 0.05, respectively). Present research andmeasurements of selected body properties, physical endurance and kinematic movement analysis may help in making aprecise determination of an athlete’s talent for breaststroke swimming.
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