| Kinematic analysis of butterfly turns of international and national swimmers. | |
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MedLine Citation:
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PMID: 12043827 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aims of this study were (1) to evaluate the different turn phases of 200 m butterfly during competition in a 50 m pool, (2) to determine if wall contact times are related to swim speed and (3) to compare the turn variables of a European Champion with other swimmers. In the first part of the study, we assessed the turns of 22 swimmers ranked in three groups according to 200 m butterfly swim performance (fast group = 121.73+/-3.03 s, intermediate group = 126.25+/-0.55 s, slow group = 129.24+/-2.30 s). Two turn times were recorded: the first before the turn (i.e. the time it takes the swimmer's head to reach the wall from 7.5 m away) and the second after the turn (i.e. the time from the wall to the point at which the swimmer's head passes 7.5 m away). The third turn was performed significantly faster by the fast group than by the slow group, both before (P< 0.01) and after (P< 0.02) the turn. In the second part of the study, objectives (2) and (3) were evaluated among 15 swimmers based on a specific protocol. Three cameras (50 Hz) simultaneously recorded the turn; these were placed above the water 10 m before the wall, 5 m before and just above the wall. Longer contact times of the feet on the wall were associated with a faster push-off speed (P < 0. 02). The European Champion achieved an improved contact time while performing a rapid pull-out speed. |
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Authors:
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C Tourny-Chollet; D Chollet; S Hogie; C Papparodopoulos |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of sports sciences Volume: 20 ISSN: 0264-0414 ISO Abbreviation: J Sports Sci Publication Date: 2002 May |
Date Detail:
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Created Date: 2002-06-04 Completed Date: 2002-11-20 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8405364 Medline TA: J Sports Sci Country: England |
Other Details:
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Languages: eng Pagination: 383-90 Citation Subset: IM |
Affiliation:
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GRHAL, University of Rouen, France. claire.tourny@univ-rouen.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Biomechanics Humans Statistics as Topic / methods Swimming / physiology* Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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