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Time limit at VO2max velocity in elite crawl swimmers

Title
Time limit at VO2max velocity in elite crawl swimmers
Type
Article in International Scientific Journal
Year
2008
Authors
Ricardo Fernandes
(Author)
FADEUP
Kari Keskinen
(Author)
Other
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Paulo Colaço
(Author)
FADEUP
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Ana Querido
(Author)
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Leandro Machado
(Author)
FADEUP
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Pedro Morais
(Author)
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Daniel Novais
(Author)
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Daniel Marinho
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João Paulo Vilas Boas Soares Campos
(Author)
FADEUP
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Journal
Vol. 29 No. 2
Pages: 145-150
ISSN: 0172-4622
Publisher: Thieme
Indexing
Pubmed / Medline
Scientific classification
FOS: Social sciences > Other social sciences
CORDIS: Social sciences > Educational sciences > Education > Physical education > Sport
Other information
Abstract (EN): he 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 (-1). 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.
Language: English
Type (Professor's evaluation): Scientific
Contact: ricfer@fade.up.pt
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