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Oxygen Kinetics and Heart Rate Response during Early Recovery from Exercise in Patients with Heart Failure
Joint Authors
Helbig, Sebastian
Gottwik, Martin
Kelle, Sebastian
von Bary, Christian
Kriatselis, Charalampos D.
Nedios, Sotirios
Source
Cardiology Research and Practice
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-24
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Background.
The purpose of this study was to assess the post-exercise O2 uptake and heart rate response in patients with heart failure (HF) in comparison to healthy individuals.
Methods and Results.
Exercise testing of all subjects was conducted according to the RITE-protocol.
The study subjects were classified according to their peak oxygen uptake (peak VO2) in four groups: healthy individuals with a peak VO2 >22 mL/kg/min (group 1, n: 50), and patients with HF and a peak VO2 of 18–22 mL/kg/min, (group 2, n: 48), 14–18 mL/kg/min (group 3, n: 57), and <14 mL/kg/min (group 4, n: 31).
Both peak VO2 and HR declined more slowly in the patients with HF than in the normal subjects.
Recovery of VO2 and HR followed monoexponential kinetics in the early post-recovery phase.
This enabled the determination of a time constant for both HR and VO2 (TC VO2 and TC HR).
From group 1 to 4 there was a prolongation of the time constant for VO2 and HR: TC VO2 (group 1: 110±34, group 2: 197±43, group 3: 238±80, and group 4: 278±50 sec), and TC HR (group 1: 148±82, group 2: 290±65, group 3: 320±58, and group 4: 376±55 sec).
Conclusion.
The rate of decline of VO2 and HR in the early post-exercise phase is inversely related to the peak VO2.
The time constant for oxygen uptake (TC VO2) and heart rate (TC HR) might prove a useful parameter for more precise monitoring and grading of HF.
American Psychological Association (APA)
Kriatselis, Charalampos D.& Nedios, Sotirios& Kelle, Sebastian& Helbig, Sebastian& Gottwik, Martin& von Bary, Christian. 2012. Oxygen Kinetics and Heart Rate Response during Early Recovery from Exercise in Patients with Heart Failure. Cardiology Research and Practice،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-477549
Modern Language Association (MLA)
Kriatselis, Charalampos D.…[et al.]. Oxygen Kinetics and Heart Rate Response during Early Recovery from Exercise in Patients with Heart Failure. Cardiology Research and Practice No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-477549
American Medical Association (AMA)
Kriatselis, Charalampos D.& Nedios, Sotirios& Kelle, Sebastian& Helbig, Sebastian& Gottwik, Martin& von Bary, Christian. Oxygen Kinetics and Heart Rate Response during Early Recovery from Exercise in Patients with Heart Failure. Cardiology Research and Practice. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-477549
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-477549