PMID: 8941541Nov 1, 1996Paper

Aerobic fitness effects on exercise-induced low-frequency diaphragm fatigue

Journal of Applied Physiology
M A BabcockJ A Dempsey

Abstract

We used bilateral phrenic nerve stimulation (BPNS; at 1, 10, and 20 Hz at functional residual capacity) to compare the amount of exercise-induced diaphragm fatigue between two groups of healthy subjects, a high-fit group [maximal O2 consumption (VO2max) = 69.0 +/- 1.8 ml.kg-1.min-1, n = 11] and a fit group (VO2max = 50.4 +/- 1.7 ml.kg-1.min-1, n = 13). Both groups exercised at 88-92% VO2max for about the same duration (15.2 +/- 1.7 and 17.9 +/- 2.6 min for high-fit and fit subjects, respectively, P > 0.05). The supramaximal BPNS test showed a significant reduction (P < 0.01) in the BPNS transdiaphragmatic pressure (Pdi) immediately after exercise of -23.1 +/- 3.1% for the high-fit group and -23.1 +/- 3.8% (P > 0.05) for the fit group. Recovery of the BPNS Pdi took 60 min in both groups. The high-fit group exercised at a higher absolute workload, which resulted in a higher CO2 production (+26%), a greater ventilatory demand (+16%) throughout the exercise, and an increased diaphragm force output (+28%) over the initial 60% of the exercise period. Thereafter, diaphragm force output declined, despite a rising minute ventilation, and it was not different between most of the high-fit and fit subjects. In summary, the high-fit subject...Continue Reading

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Citations

Jun 19, 2002·Journal of Applied Physiology·Mark A BabcockJerome A Dempsey
Jan 21, 2006·Journal of Applied Physiology·Bryan J TaylorLee M Romer
Jan 24, 2007·European Journal of Applied Physiology·John J LeddyClaes E G Lundgren
Sep 14, 2007·Journal of Sports Sciences·Jamie Kift, E Mark Williams
Dec 22, 2007·Journal of Applied Physiology·Lee M Romer, Michael I Polkey
Oct 4, 2008·The Journal of Physiology·Ioannis VogiatzisSpyros Zakynthinos
Mar 20, 2010·Journal of Strength and Conditioning Research·Albertas SkurvydasNerijus Masiulis
Mar 14, 2013·BioMed Research International·Giedrius GorianovasMalachy P McHugh
May 2, 2015·Journal of Strength and Conditioning Research·Stephanie P KurtiCraig A Harms
Oct 1, 2015·Journal of Strength and Conditioning Research·Toshiyuki OhyaYasuhiro Suzuki
May 5, 1998·Medicine and Science in Sports and Exercise·M A BabcockJ A Dempsey
Mar 16, 2002·Journal of Applied Physiology·P Alexander DerchakJerome A Dempsey
Dec 29, 2000·Medicine and Science in Sports and Exercise·C PerretU Boutellier
Apr 24, 2010·Journal of Applied Physiology·Jordan A GuenetteA William Sheel
Oct 25, 2013·Scandinavian Journal of Medicine & Science in Sports·K M LavinG S Zavorsky
Apr 30, 2014·European Journal of Applied Physiology·Thomas U WüthrichChristina M Spengler
Jan 23, 2016·Medicine and Science in Sports and Exercise·Andrew H RamsookJordan A Guenette
May 20, 2015·European Journal of Applied Physiology·Leonie M ChenowethCraig A Harms
Jan 24, 2018·Journal of Applied Physiology·Bruno ArchizaA William Sheel
Sep 25, 2019·Journal of the American College of Nutrition·Hunter L ParisTimothy D Mickleborough
Feb 4, 1999·Journal of Applied Physiology·S MotaJ Milic-Emili
Aug 21, 2002·American Journal of Respiratory and Critical Care Medicine·UNKNOWN American Thoracic Society/European Respiratory Society
Nov 18, 2011·Medicine and Science in Sports and Exercise·Michael A JohnsonGraham R Sharpe
Feb 6, 2010·Respiratory Research·Nicholas S HopkinsonMichael I Polkey
Mar 3, 2011·Medicine and Science in Sports and Exercise·Paolo B DominelliA William Sheel
Jun 25, 2005·European Journal of Applied Physiology·Atila OzkaplanJack E Taunton
Jan 9, 2018·Journal of Strength and Conditioning Research·Thiago R Gonçalves, Pedro Paulo da S Soares
Nov 17, 2020·SN Comprehensive Clinical Medicine·Marine BrikaAlexandre Kubicki
Jul 3, 2021·International Journal of Environmental Research and Public Health·Frédérique LehouillierMartin Lavallière

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