PMID: 7690938Aug 1, 1993Paper

Ventilation and heart rate response during exercise in normals: relevance for rate variable pacing

Pacing and Clinical Electrophysiology : PACE
N TreeseJ Meyer

Abstract

The observation of a close relationship of heart rate to oxygen uptake (HR-VO2) and heart rate to minute ventilation (HR-VE) has been shown to be of particular value in rate variable pacing. However, the impact of anaerobic threshold (AT) for the HR-VO2 and HR-VE slope has been studied less. Twenty-three male and 16 female subjects, mean age 52 +/- 7 years, were selected in whom complete heart catherization and extensive noninvasive studies excluded major cardiopulmonary disease. Semisupine bicycle exercise testing with analysis of respiratory gas exchange was performed using a ramping work rate protocol with work increments of 20 watts/min. At the respiratory AT, determined by the V slope method, oxygen uptake (VO2-AT) was 15.2 +/- 3.0 mL/kg in males versus 13.8 +/- 2.3 mL/kg in females and heart rate (HR-AT) was 109 +/- 18 beats/min versus 119 +/- 20 beats/min, respectively. Heart rate was highly correlated (r > or = 0.9) to VO2 and minute ventilation (VE). A linear regression for HR-VO2, however, was found only in 16/39 and for HR-VE in 11/39 subjects. Assuming the AT as the breakpoint of two linear curves, it could be demonstrated that compared to low exercise HR appeared to increase at maximal exercise more in relation to ...Continue Reading

References

Aug 1, 1992·Pacing and Clinical Electrophysiology : PACE·C P Lau
Jun 1, 1986·Journal of Applied Physiology·W L BeaverB J Whipp
Jan 1, 1988·Journal of the American College of Cardiology·P A McElroyK T Weber
Jun 1, 1982·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·B J WhippK Wasserman
Feb 1, 1964·Circulation Research·R D JONES, R M BERNE

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Citations

Mar 10, 2000·Cardiology Clinics·S K Leung, C P Lau
Aug 1, 1997·Pacing and Clinical Electrophysiology : PACE·L P SoucieA S Tang
Jan 23, 1999·Pacing and Clinical Electrophysiology : PACE·B SchwaabH Schieffer
Apr 9, 2008·European Journal of Cardiovascular Prevention and Rehabilitation : Official Journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology·Griet Van ThielenViviane M A Conraads
Nov 19, 2003·Pacing and Clinical Electrophysiology : PACE·Ron SimonJaswinder Gill
Dec 10, 1999·Pacing and Clinical Electrophysiology : PACE·B SchwaabH Schieffer
Dec 27, 2019·Pacing and Clinical Electrophysiology : PACE·Maria SerovaHugo Saner
Nov 1, 1994·Pacing and Clinical Electrophysiology : PACE·A K SladeA J Camm

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