Are first ventilatory threshold and 6-minute walk test heart rate interchangeable? A pilot study in healthy elderlies and cardiac patients

Annals of Physical and Rehabilitation Medicine
M D MorardVincent Gremeaux

Abstract

Heart rate (HR) at the ventilatory threshold (VT) is often used to prescribe exercise intensity in cardiac rehabilitation. Some studies have reported no significant difference between HR at VT and HR measured at the end of a 6-min walk test (6-MWT) in cardiac patients. The aim of this work was to assess the potential equivalence between those parameters at the individual level. Three groups of subjects performed a stress test and a 6-MWT: 22 healthy elderlies (GES, 77 ± 3.7 years), 10 stable coronary artery disease (CAD) patients (GMI, 50.9 ± 4.2 years) and 30 patients with chronic heart failure (GHF, 63.3 ± 10 years). We analyzed the correlation, mean bias, 95% confidence interval (95% CI) of the mean bias and the magnitude of the bias between 6-MWT-HR and VT-HR. There was a significant difference between 6-MWT and VT-HR in GHF (99.1 ± 8.8 vs 91.6 ± 18.6 bpm, P=0.016) but not in GES and GMI. The correlation between those 2 parameters was high for GMI (r=0.78, P<0.05), and moderate for GES and GHF (r=0.48 and 0.55, respectively, P<0.05). The 95% CI of bias was large (>30%) in GES and GHF and acceptable in GMI (8-12%). 6-MWT-HR and VT-HR do not appear interchangeable at the individual level in healthy elderlies and CHF patients....Continue Reading

References

Jan 15, 1968·JAMA : the Journal of the American Medical Association·K H Cooper
Nov 9, 2000·The New England Journal of Medicine·C M AlbertJ E Manson
Jan 14, 2003·American Journal of Respiratory and Critical Care Medicine·UNKNOWN American Thoracic Society, UNKNOWN American College of Chest Physicians
Sep 18, 2004·Archives of Physical Medicine and Rehabilitation·Mathieu GaydaSaïd Ahmaïdi
Aug 30, 2007·Aging Clinical and Experimental Research·Gaëlle DeleyJean-Marie Casillas
Jul 21, 2009·European Journal of Applied Physiology·Melissa JehnArno Schmidt-Trucksäss
Apr 28, 2012·Scandinavian Journal of Medicine & Science in Sports·O DupuyL Bosquet
Jun 15, 2012·Sports Medicine·Thibaut GuiraudLaurent Bosquet
Oct 16, 2013·Annals of Physical and Rehabilitation Medicine·J-M CasillasV Gremeaux
Feb 13, 2014·Sports Medicine·Jérémy B CoquartRoger G Eston

❮ Previous
Next ❯

Citations

May 20, 2015·Annals of Physical and Rehabilitation Medicine·Jean-Marie Casillas

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antiarrhythmic Agents: Mechanisms of Action

Understanding the mechanism of action of antiarrhythmic agents is essential in developing new medications as treatment of cardiac arrhythmias is currently limited by the reduced availability of safe and effective drugs. Discover the latest research on Antiarrhythmic Agents: Mechanism of Action here.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

© 2021 Meta ULC. All rights reserved