Time limit at VO2max velocity in elite crawl swimmers
Deutscher übersetzter Titel: | Zeitgrenze der Geschwindigkeit bei VO2max bei Profikraulschwimmern |
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Autor: | Fernandes, R.J.; Keskinen, K.L.; Colaco, P.J.; Querido, A.J. ; Machado, L.J.; Morais, P.A.; Novais, D.Q.; Marinho, D.A.; Vilas-Boas, J.P. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 29 (2008), 2, S. 145-150, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-965113 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU200808002375 |
Quelle: | BISp |
Abstract
The purpose of this study is to assess, with elite crawl swimmers, the time limit at the minimum velocity corresponding to maximal oxygen consumption (TLim-vVO2max), and to characterize its main determinants. Eight subjects performed an incremental test for vVO2max assessment and, forty-eight hours later, an all-out swim at vVO2max until exhaustion. VO2 was directly measured using a telemetric portable gas analyzer and a visual pacer was used to help the swimmers keeping the predetermined velocities. Blood lactate concentrations, heart rate and stroke parameter values were also measured. TLim-vVO2max and vVO2max, averaged, respectively, 243.2 ± 30.5 s and 1.45 ± 0.08 m/s. TLim-vVO2max correlated positively with VO2 slow component (r = 0.76, p < 0.05). Negative correlations were found between TLim-vVO2max and body surface area (r = -0.80) and delta lactate (r = -0.69) (p < 0.05), and with vVO2max (r = -0.63), v corresponding to anaerobic threshold (r = -0.78) and the energy cost corresponding to vVO2max (r = -0.62) (p < 0.10). No correlations were observed between TLim-vVO2max and stroking parameters. This study confirmed the tendency to TLim-vVO2max be lower in the swimmers who presented higher vVO2max and vAnT, possibly explained by their higher surface area, energy cost and anaerobic rate. Additionally, O2SC seems to be a determinant of TLim-vVO2max. Verf.-Referat