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Optimizing freestyle flip-turn technique

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Item Summary

Title: Optimizing freestyle flip-turn technique
Authors: Patz, Amy E.
Keywords: Swimming -- Crawl stroke
Swimming -- Starts and turns
Issue Date: 2005
Abstract: The purpose of this study was to examine the effect of three variables on the push-off velocity of the freestyle flip-turn. These variables are: (l)The distance from the wall a swimmer's hips are at foot contact (tuck index); (2) The depth of the foot plant on the wall during push-off (foot plant index); and (3) The percentage of wall-contact time spent in an active push-off phase (%WCT active). The flip-turns of twenty-three University (Division I) swimmers performed at race pace were captured using underwater videography and analyzed for kinematic data. Simultaneous regression analysis was conducted using the push-off velocity as a dependent variable to determine the overall predictive characteristics of the variables. The mean push-off velocity was 2.47 ms-1. The minimum velocity was 1.3 ms-1 and the maximum push-off velocity was 3.29 ms-1. The mean tuck index of all turns was 0.57 +0.14, indicating that the hips were a mean distance from the wall that was approximately 57% of the length of the swimmer's legs . The study found a significant, negative correlation between push-off velocity and tuck index, indicating that the more tucked position (lower tuck index) predicted higher push- off velocity. By using a curvilinear model, a tuck index of.46 was suggested to produce the maximum push-off velocity. Neither foot plant index nor %WCT active was found to significantly predict push-off velocity.
Description: Thesis (M.S.)--University of Hawaii at Manoa, 2005.
Includes bibliographical references (leaves 48-49).
vi, 49 leaves, bound ill. 29 cm
Rights: All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections:M.S. - Kinesiology and Leisure Science

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