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- W2283861353 abstract "To assess the validity of postexercise measurements in estimating peak oxygen uptake (V̇O 2peak ) in swimming, we compared oxygen uptake (V̇O 2 ) measurements during supramaximal exercise with various commonly adopted methods, including a recently developed heart rate — V̇O 2 modelling procedure. Thirty-one elite swimmers performed a 200-m maximal swim where V̇O 2 was measured breath-by-breath using a portable gas analyzer connected to a respiratory snorkel, 1 min before, during, and 3 min postexercise. V̇O 2peak (-20–0) was the average of the last 20 s of effort. The following postexercise measures were compared: (i) first 20-s average (V̇O 2peak (0–20)); (ii) linear backward extrapolation (BE) of the first 20 s (BE(20)), 30 s, and 3 × 20-, 4 × 20-, and 3 or 4 × 20-s averages; (iii) semilogarithmic BE at 20 s (LOG(20)) and at the other same time intervals as in linear BE; and (iv) predicted V̇O 2peak using mathematical modelling (pV̇O 2 (0–20)]. Repeated-measures ANOVA and post-hoc Bonferroni tests compared V̇O 2peak (criterion) and each estimated value. Pearson’s coefficient of determination (r 2 ) was used to assess correlation. Exercise V̇O 2peak (-20–0) (mean ± SD 3531 ± 738 mL·min −1 ) was not different (p > 0.30) from pV̇O 2 (0–20) (3571 ± 735 mL·min −1 ), BE(20) (3617 ± 708 mL·min −1 ), or LOG(20) (3627 ± 746 mL·min −1 ). pV̇O 2 (0–20) was very strongly correlated with exercise V̇O 2peak (r 2 = 0.962; p < 0.001), and showed a low standard error of the estimate (146 mL·min −1 , 4.1%) and the lowest mean difference (40 mL·min −1 ; 1.1%). We confirm that the new modelling procedure based on postexercise V̇O 2 and heart rate measurements is a valid and accurate procedure for estimating V̇O 2peak in swimmers and avoids the estimation bias produced by other methods." @default.
- W2283861353 created "2016-06-24" @default.
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- W2283861353 date "2016-06-01" @default.
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- W2283861353 title "Estimating peak oxygen uptake based on postexercise measurements in swimming" @default.
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- W2283861353 doi "https://doi.org/10.1139/apnm-2015-0524" @default.
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