European Journal of Applied Physiology and Occupational Physiology

, Volume 80, Issue 3, pp 192–199

Relative contribution of arms and legs in humans to propulsion in 25-m sprint front-crawl swimming

Authors

  • V. J. Deschodt
    • Centre de Recherche et d'Innovation sur le Sport, Laboratoire de la Performance, Unite de Formation et de Récherche en Sciences et Techniques des Activités Physiques et Sportives, 27-29 Bd du 11 Novembre 1918, F-69 622 Villeurbanne cedex, France
  • L. M. Arsac
    • Laboratoire Performance Sportive et Santé, Faculté des Sciences du Sport et de l'Education Physique, Avenue Camille Jullian, F-33 405 Talence cedex, France
  • A. H. Rouard
    • Centre de Recherche et d'Innovation sur le Sport, Laboratoire de la Performance, Unite de Formation et de Récherche en Sciences et Techniques des Activités Physiques et Sportives, 27-29 Bd du 11 Novembre 1918, F-69 622 Villeurbanne cedex, France
ORIGINAL ARTICLE

DOI: 10.1007/s004210050581

Cite this article as:
Deschodt, V., Arsac, L. & Rouard, A. Eur J Appl Physiol (1999) 80: 192. doi:10.1007/s004210050581

Abstract

Eight male subjects were asked to swim 25 m at maximal velocity while the use of the arm(s) and legs was alternately restricted. Four situations were examined using one arm (1A), two arms (2A), one arm and two legs (1A2L) and both arms and legs (2A2L, normal swim) for propulsion. A significant mean increase of 10% on maximal velocity was obtained in 1A2L and 2A2L compared to 1A and 2A. A non-significant 4% effect was obtained in 1A. This study focused on the actual contribution of leg kick in the 10% gain in maximal velocity. It was clear that the underwater trajectory of the wrist was modified by the action of the legs (most comparisons P < 0.001). Therefore it was thought that the legs enhanced the generated propulsive force by improving the propulsive action of the arm. The arm action was quantified by selecting typical phases from the filmed trajectory of the wrist, namely forward (F), downwards (D) and backwards (B). Although there was a tendency for individual changes in kinematic parameters (F, D and B) to occur with individual changes in velocity when 2A was compared to 2A2L, no relationship was found between the relative changes in F, D and B and relative changes in velocity. This was illustrated by describing the responses of three individuals who could represent three patterns of contribution by legs and arms to propulsion in high speed swimming.

Key words Aquatic locomotionMaximal velocityWrist trajectoryLeg kick effects
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© Springer-Verlag Berlin Heidelberg 1999