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Int J Sports Med 2010; 31(9): 624-630
DOI: 10.1055/s-0030-1255066
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Swim Specialty Affects Energy Cost and Motor Organization

L. Seifert1 , J. Komar1 , P. M. Leprêtre2 , F. Lemaitre1 , F. Chavallard1 , M. Alberty3 , N. Houel4 , C. Hausswirth5 , D. Chollet6 , P. Hellard4
  • 1Faculty of Sport Sciences, University of Rouen, Cetaps Upres EA3832, Mont Saint Aignan, France
  • 2Faculté des Sciences du Sport, Université de Picardie Jules Verne, Laboratoire de Recherche Adaptations Physiologiques à l’Exercice et Réadaptation à l’Effort, EA3300, Amiens, France
  • 3Laboratory of Human Movement Studies, Faculty of Sport Sciences, University of Lille, France
  • 4Fédération Française de Natation, Département d’Etudes et Recherches, Paris, France
  • 5INSEP, Biomechanics and Physiology, Paris, France
  • 6Université de Rouen, CETAPS Laboratory EA3832, Mont Saint Aignan, France
Further Information

Publication History

accepted after revision May 02, 2010

Publication Date:
19 July 2010 (online)

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Abstract

The purpose of this study was to analyse the effect of swimmer specialty on energy cost and motor organization. The stroking parameters (velocity, stroke rate, stroke length, stroke index) and the index of coordination (IdC) of 6 elite sprinters were compared with those of 6 elite long-distance swimmers during an incremental swimming exercise test (6×300 m separated by 30 s of passive recovery) that progressively increased the energy cost. Energy cost (C), with its aerobic (Caero) and anaerobic (Canaero) components, was determined by measuring oxygen uptake (VO2) and blood lactate ([La]). Motor organization was assessed by analysis of video recordings from aerial and underwater side-view cameras. The results showed that throughout the test, both groups increased C, Canaero, stroke rate and IdC and decreased Caero and stroke length (all P<0.05). On the mean of the 300-m sets, sprinters had higher values for C (14.8 vs. 12.9 J·kg−1·m−1), Canaero (33.8 vs. 23.4%), [La] (5.9 vs. 3.1 mmol·L−1), stroke length (2.31 vs. 2.28 m) and IdC (−11.2 vs. −21.7%) and lower values for Caero (66.2 vs. 79.6%), VO2 net (2 825 vs. 2 903 mL·min−1), stroke rate (0.55 vs. 0.62 Hz) and stroke index (2.96 vs. 3.19 m2·s−1) than long-distance swimmers (all P<0.05). For the same relative intensity, sprinters accumulated more lactate and swam more slowly than long-distance swimmers; they showed greater change in their arm coordination but their swimming economy was lower.

Key words

coordination - motor control - biomechanics - swimming - energy cost - specialty

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Correspondence

Dr. Ludovic Seifert

Faculty of Sport Sciences

CETAPS UPRES EA 3832

Boulevard Siegfried

Mont Saint Aignan

76821 France

Phone: +33/232/107 784

Fax: +33/232/107 793

Email: ludovic.seifert@univ-rouen.fr

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