Abstract des Autors

The purpose of this study was to clearly show the relationship among the swimming velocity (Vo), the maximum propulsion (Po) and the active drag force (Dao ) in the front crawl stroke. The subjects were 14 men's front crawl swimmers. The subjects were towed with the active drag system in a streamline position and the subjects swam 8 maximal thals (5 trials with added resistance, and 3 trials in tow by active drag system). The Vo, Po and Dao were calculated by an exponential function of velocity. The calculated Vo was 1.68 +/- 0.11m/sec, Po was 150.12 +/- 29.98 N, and Dao was 64.85 +/- 16.53 N. The relationship between Vo and the velocity calculated from 100m best time was a linear relation (r=0.81, p<0.01). The relationship among Po, Dao and Vo was a significant correlation (Vo=1.387 + 0.004 Po - 0.005 Dao). This result clearly showed that swimming performance depended an the propulsion and the active drag. Consequently the swimming velocity was expressed by the function of the propulsion and the active drag, and it was shown that the swimming velocity progressed with increasing the propulsion and decreasing the active drag. Verf.-Referat