TY  - JOUR
AU  - Fernandes, R.J.
A2  - Fernandes, R.J.
A2  - Cardoso, C.S.
A2  - Soares, S.M.
A2  - Ascensao, A.
A2  - Colaco, P.J.
A2  - Vilas-Boas, J.P.
DB  - BISp
DP  - BISp
KW  - Analyse, biomechanische
KW  - Belastung, erschöpfende
KW  - Belastung, maximale
KW  - Belastungsintensität
KW  - Gasaustausch
KW  - Gasstoffwechsel
KW  - Korrelation
KW  - Sauerstoffaufnahme
KW  - Sauerstoffaufnahme, maximale
KW  - Schwimmen
KW  - Schwimmsport
KW  - Sportmedizin
LA  - eng
TI  - Time limit and VO2 slow component at intensities corresponding to VO2max in swimmers
TT  - Zeit bis zur Erschöpfung und die langsame Komponente der Sauerstoffaufnahme bei Intensitäten im Bereich der maximalen Sauerstoffaufnahme bei Schwimmern
PY  - 2003
N2  - The purpose of this study was to measure, in swimming pool conditions and with high level swimmers, the time to exhaustion at the minimum velocity that elicits maximal oxygen consumption (TLim at vVO2max), and the corresponding VO2 slow component (O2SC). The vVO2max was determined through an intermittent incremental test (n=15). Forty-eight hours later, TLim was assessed using an all-out swim at vVO2max until exhaustion. VO2 was measured through direct oximetry and the swimming velocity was controlled using a visual light-pacer. Blood lactate concentrations and heart rate values were also measured. Mean V·O2max for the incremental test was 5.09 ± 0.53 l/min and the corresponding vVO2max was 1.46 ± 0.06 m/s. Mean TLim value was 260.20 ± 60.73 s and it was inversely correlated with the velocity of anaerobic threshold (r=-0.54, p<0.05). This fact, associated with the inverse relationship between TLim and vVO2max (r=-0.47, but only for p<0.10), suggested that swimmers' lower level aerobic metabolic rate might be associated with a larger capacity to sustain that exercise intensity. O2SC reached 274.11 ± 152.83 l/min and was correlated with TLim (r=0.54), increased ventilation in TLim test (r=0.52) and energy cost of the respiratory muscles (r=0.51), for p<0.05. These data suggest that O2SC was also observed in the swimming pool, in high level swimmers performing at vVO2max, and that higher TLim seems to correspond to higher expected O2SC amplitude. These findings seem to bring new data with application in middle distance swimming.   Verf.-Referat
L2  - https://dx.doi.org/10.1055/s-2003-43274
DO  - 10.1055/s-2003-43274
SP  - S. 576-581
SN  - 0172-4622
JO  - International journal of sports medicine
IS  - 8
VL  - 24
M3  - Gedruckte Ressource
M3  - Elektronische Ressource (online)
ID  - PU200403000864
ER  -