Oxygen uptake-work rate relationship during two consecutive ramp exercise tests

International Journal of Sports Medicine
A M Jones, H Carter

Abstract

The performance of prior high intensity constant work rate (CWR) exercise significantly influences the gain of the fundamental oxygen uptake (VO2) response during subsequent high intensity CWR exercise. The purpose of the present study was to investigate whether equivalent effects could be elicited in the second of two bouts of exhaustive ramp exercise. We therefore hypothesised that a prior bout of exhaustive ramp exercise would increase the VO2-work rate (DeltaVO2/DeltaWR) slope during subsequent ramp exercise. Nine healthy males performed two ramp exercise tests to exhaustion on an electrically braked cycle ergometer separated by a 10-min period of cycling at 20 W. Pulmonary VO2 was measured breath-by-breath throughout both tests, and the mean response time (MRT) and the DeltaVO2/DeltaWR slope for exercise below the gas exchange threshold (GET) (S1), above the GET (S2), and over the S1 + S2 region (ST) were determined. Paired t-tests were used to analyse the data with significance accepted at p < 0.05. Blood [lactate] was higher at the onset of the second ramp test compared to the first (mean +/- SEM 1.2 +/- 0.1 vs. 6.2 +/- 0.7 mM; p < 0.01), but baseline VO2 was not significantly different between tests (0.93 +/- 0.05 vs. 0...Continue Reading

Citations

Jul 19, 2011·European Journal of Applied Physiology·Jan BooneJan Bourgois
May 19, 2007·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Nicolas J A Berger, Andrew M Jones
Apr 20, 2010·Progress in Neuro-psychopharmacology & Biological Psychiatry·Lars DonathHolger H W Gabriel
Jul 21, 2009·Respiratory Physiology & Neurobiology·Daryl P WilkersonAndrew M Jones
Oct 5, 2015·European Journal of Applied Physiology·Eloisa LimontaFabio Esposito
Feb 23, 2020·Future Cardiology·Sathish ParasuramanMichael P Frenneaux
Aug 13, 2010·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Anni VanhataloAndrew M Jones
Apr 1, 2020·Medicine and Science in Sports and Exercise·Jonathan WagnerRaphael Knaier
Sep 1, 2006·International Journal of Sports Physiology and Performance·Oliver FaudeWilfried Kindermann
Dec 15, 2018·Medicine and Science in Sports and Exercise·Raphael KnaierArno Schmidt-TRUCKSäSS
Feb 17, 2007·Journal of Applied Physiology·Graydon H RaymerGreg D Marsh
Jun 6, 2019·Scandinavian Journal of Medicine & Science in Sports·Max NiemeyerRalph Beneke

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