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DOI: 10.1055/s-0031-1279772
© Georg Thieme Verlag KG Stuttgart · New York
V˙O2 Kinetics in 200-m Race-Pace Front Crawl Swimming
Publikationsverlauf
accepted after revision May 02, 2011
Publikationsdatum:
12. September 2011 (online)
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Abstract
Studies that aim to characterize oxygen uptake kinetics in efforts above maximal oxygen consumption intensity are scarce. Our aim was to analyze the oxygen kinetics in a maximal 200-m front crawl, all measurements being conducted in swimming pool conditions. 10 high-level male swimmers performed a maximal 200-m bout and oxygen uptake was directly measured through breath-by-breath gas analysis. Mean (±SD) peak oxygen uptake was 68.58 (±5.79) ml.kg−1.min−1, evidencing a fast component phase. As expected, peak oxygen uptake presented a direct relationship with mean swimming speed of the first 50-m lap and with the 200-m effort, and was also correlated with the amplitude of the fast component (r=0.75, r=0.72, r=0.73, p<0.05, respectively). The observed mean amplitude value was higher than those observed in the literature for other exercise intensity domains. However, the time for its onset, as well as the duration for attaining the steady state, was shorter, as the peak oxygen uptake was not correlated with these 2 components. Moreover, as previously described for swimming at high intensities, the slow component phenomenon was not observed. Aerobic metabolic pathway accounted for 78.6%, confirming the high aerobic contribution in middle distance swimming events.
Key words
swimming - V˙O 2 response - extreme intensity exercise
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Correspondence
Prof. Ricardo J. FernandesPhD
University of Porto
Faculty of Sport
CIFI2D
Rua Dr. Plácido Costa 91
Porto 4200
Portugal
Telefon: +351/22/5074 763
Fax: +351/22/5500 687
eMail: ricfer@fade.up.pt