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A kinematic analysis of the "break-out" phase of the freestyle, backstroke, and butterfly swimming strokes

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Item Summary

Title: A kinematic analysis of the "break-out" phase of the freestyle, backstroke, and butterfly swimming strokes
Authors: Allnutt, Stephen Benjamin
Keywords: kinesiology
Issue Date: Aug 2014
Publisher: [Honolulu] : [University of Hawaii at Manoa], [August 2014]
Abstract: This study examined the effect of different time intervals between when a swimmer begins their initial stroke until their head breaks the surface on three variables: horizontal hip velocity when their pull begins, velocity when their head breaks the surface, and peak velocity during the first stroke. Twelve university (Division 1) swimmers performed their breakout-stroke and were analyzed using motion analysis software. Paired-samples t-tests were used to compare self-selected breakout time, elongated breakout time, and shortened breakout time. The mean breakout time was 0.40 ± 0.22 (n=5) for Freestyle, 0.82±0.11 (n=5) for Backstroke, and 0.25±0.17 (n=3) for Butterfly during normal breakout trials. When all strokes were combined, significant differences were found in head break velocity during self-selected trials (1.60±0.20 m/s) when compared to elongated (1.43±0.22 m/s, p≤0.01), and shortened (1.39±0.19 m/s, p≤0.01). Regression analysis showed a significant positive correlation between head break velocity and maximal velocity during the first pull.
Description: M.S. University of Hawaii at Manoa 2014.
Includes bibliographical references.
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 Rehabilitation Science

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