Effect of voluntary hypocapnic hyperventilation or moderate hypoxia on metabolic and heart rate responses during high-intensity intermittent exercise

European Journal of Applied Physiology
Kohei DobashiTakeshi Nishiyasu

Abstract

To investigate the effect of voluntary hypocapnic hyperventilation or moderate hypoxia on metabolic and heart rate responses during high-intensity intermittent exercise. Ten males performed three 30-s bouts of high-intensity cycling [Ex1 and Ex2: constant-workload at 80% of the power output in the Wingate anaerobic test (WAnT), Ex3: WAnT] interspaced with 4-min recovery periods under normoxic (Control), hypocapnic or hypoxic (2500 m) conditions. Hypocapnia was developed through voluntary hyperventilation for 20 min prior to Ex1 and during each recovery period. End-tidal CO2 pressure was lower before each exercise in the hypocapnia than control trials. Oxygen uptake ([Formula: see text]) was lower in the hypocapnia than control trials (822 ± 235 vs. 1645 ± 245 mL min-1; mean ± SD) during Ex1, but not Ex2 or Ex3, without a between-trial difference in the power output during the exercises. Heart rates (HRs) during Ex1 (127 ± 8 vs. 142 ± 10 beats min-1) and subsequent post-exercise recovery periods were lower in the hypocapnia than control trials, without differences during or after Ex2, except at 4 min into the second recovery period. [Formula: see text] did not differ between the control and hypoxia trials throughout. These resul...Continue Reading

References

Jan 1, 1992·European Journal of Applied Physiology and Occupational Physiology·J PletJ K Hansen
Aug 1, 1990·Journal of Applied Physiology·L B Rowell, D S O'Leary
Jan 1, 1990·European Journal of Applied Physiology and Occupational Physiology·T M McLellanI Jacobs
Feb 1, 1987·Journal of Applied Physiology·E N Bruce, N S Cherniack
Nov 1, 1986·The American Journal of Physiology·L L SprietN L Jones
Sep 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·S A WardK Wasserman
Aug 1, 1993·Journal of Applied Physiology·G C GaitanosS Brooks
Oct 1, 1996·Medicine and Science in Sports and Exercise·I TabataK Yamamoto
Apr 1, 1997·Physiological Reviews·C Juel
Jun 16, 1999·Journal of Applied Physiology·P G WeyandS Wright
Oct 23, 2002·Journal of Applied Physiology·J A L CalbetJ Chavarren
Sep 9, 2008·Scandinavian Journal of Medicine & Science in Sports·P Bärtsch, B Saltin
Feb 13, 2009·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Philip N Ainslie, James Duffin
Feb 28, 2009·Journal of Applied Physiology·Azmy FaisalRichard L Hughson
Apr 23, 2013·Medicine and Science in Sports and Exercise·Joke PuypePeter Hespel
Sep 23, 2014·European Journal of Applied Physiology·Paulo Cesar do NascimentoLuiz Guilherme Antonacci Guglielmo
May 7, 2015·European Journal of Applied Physiology·Naoto FujiiTakeshi Nishiyasu
Jul 15, 2015·SpringerPlus·Nobukazu KasaiKazushige Goto

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Citations

Jan 23, 2021·Medicine and Science in Sports and Exercise·Michael A JohnsonNeil C Williams

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