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Journal of Human Kinetics

The Journal of Academy of Physical Education in Katowice

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How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles?

Tiago Barbosa
  • Department of Sports Sciences, Polytechnic Institute of Bragança, Bragança, Portugal
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
/ Mário Costa
  • Department of Sports Sciences, Polytechnic Institute of Bragança, Bragança, Portugal
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
/ Jorge Morais
  • Department of Sports Sciences, Polytechnic Institute of Bragança, Bragança, Portugal
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
/ Marc Moreira
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
/ António Silva
  • Department of Sports Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
/ Daniel Marinho
  • Department of Sports Sciences, University of Beira Interior, Covilhã, Portugal
  • Research Centre in Sports, Health and Human Development, Vila Real, Portugal
Published Online: 2012-05-30 | DOI: https://doi.org/10.2478/v10078-012-0020-x

How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles?

The aim of this research was to develop a path-flow analysis model to highlight the relationships between buoyancy and prone gliding tests and some selected anthropometrical and biomechanical variables. Thirty-eight young male swimmers (12.97 ± 1.05 years old) with several competitive levels were evaluated. It were assessed the body mass, height, fat mass, body surface area, vertical buoyancy, prone gliding after wall push-off, stroke length, stroke frequency and velocity after a maximal 25 [m] swim. The confirmatory model included the body mass, height, fat mass, prone gliding test, stroke length, stroke frequency and velocity. All theoretical paths were verified except for the vertical buoyancy test that did not present any relationship with anthropometrical and biomechanical variables nor with the prone gliding test. The good-of-fit from the confirmatory path-flow model, assessed with the standardized root mean square residuals (SRMR), is considered as being close to the cut-off value, but even so not suitable of the theory (SRMR = 0.11). As a conclusion, vertical buoyancy and prone gliding tests are not the best techniques to assess the swimmer's hydrostatic and hydrodynamic profile, respectively.

Keywords: competitive swimming; evaluation; children; performance

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About the article


Published Online: 2012-05-30

Published in Print: 2012-05-01


Citation Information: Journal of Human Kinetics, ISSN (Online) 1899-7562, ISSN (Print) 1640-5544, DOI: https://doi.org/10.2478/v10078-012-0020-x. Export Citation

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