McLean, S. P., Havriluk, R., & Brandt, S. (2008). Effect of adding a dolphin kick to a breaststroke pullout. ACSM 55th Annual Meeting Indianapolis, Presentation Number, 2098.

This study assessed the effect of adding a dolphin kick to a breaststroke pullout in swimmers (N = 11) experienced with performing traditional and dolphin kick pullouts. Underwater video analysis was used to track whole body center of mass kinematics during a pullout. Time for the center of mass to travel distances ranging from 2.5-4 m from the initiation of the pullout were computed. Hand force data were derived from differential pressure measurements during the pulling phase of the pullout.

A dolphin kick in a breaststroke pullout significantly improved performance. Time for the center of mass to travel 4 m after the initiation of the pull was reduced by 0.19 seconds. Force production from the hands was similar between techniques. Total impulse produced by the pull was significantly reduced when using the dolphin kick pullout.

Implication. A dolphin kick during a breaststroke pullout provides a significant advantage over the traditional no-dolphin kick pullout. The benefit comes from enhanced kick-propulsion and not the pull.

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