| Reversal of autonomic derangements by physical training in chronic heart failure assessed by heart rate variability. | |
| | |
MedLine Citation:
|
PMID: 7671894 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Decreased heart rate variability has been associated with chronic congestive heart failure (CHF). We evaluated the effect of physical training on heart rate variability in 20 patients with CHF (NYHA class II-III) randomized to training (n = 8) and control (n = 12) groups. The training group underwent 3 months of physical training, by exercising on a bicycle ergometer for 30 min three times a week at a load corresponding to 50-60% of their peak oxygen consumption. Heart rate variability was assessed from 20-h ambulatory ECG recordings in the frequency domain, determined by high (0.15-0.40 Hz), low (0.04-0.15 Hz) and very low frequency (0.008-0.04 Hz) components. The high frequency component increased by 22-55% in the training group during the day (P = 0.0001) but not at night. The increase was seen during both sedentary and active periods. The low frequency/high frequency ratio attenuated in the training group during the day (P = 0.05) whereas an increase was seen in the control group throughout the day (P = 0.0003). Training lengthened the exercise duration by 71% at a submaximal workload (P = 0.01) and tended to increase the peak oxygen consumption by 15% (P = 0.09). These remained unchanged in the control group. In conclusion, physical training, which improves exercise capacity, ameliorates the autonomic derangement in CHF by increasing the parasympathetically mediated component of heart rate variability. It may thus influence favourably the prognosis of the disease. |
| | |
Authors:
|
K Kiilavuori; L Toivonen; H Näveri; H Leinonen |
Related Documents
:
|
11749654 - Exercise training increases arterial compliance in patients with congestive heart failure. 16679264 - Reduced rate of alveolar-capillary recruitment and fall of pulmonary diffusing capacity... 2943144 - Endocrinology of cardiac failure. pathophysiologic aspects--hemodynamics. 19154844 - Safety, acceptance, and physiologic effects of sauna bathing in people with chronic hea... 19001884 - The relationship between exercise and osteoarthritis in the elderly. 21660834 - Effects of liquid cooling garments on recovery and performance time in individuals perf... |
Publication Detail:
|
Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: European heart journal Volume: 16 ISSN: 0195-668X ISO Abbreviation: Eur. Heart J. Publication Date: 1995 Apr |
Date Detail:
|
Created Date: 1995-10-17 Completed Date: 1995-10-17 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 8006263 Medline TA: Eur Heart J Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: 490-5 Citation Subset: IM |
Affiliation:
|
Department of Medicine, Helsinki University Central Hospital, Finland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Chronic Disease Electrocardiography, Ambulatory Exercise Therapy* Female Heart Failure / metabolism, physiopathology*, therapy Heart Rate / physiology* Humans Male Middle Aged Oxygen Consumption Sympathetic Nervous System / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Plasma atrial natriuretic peptide is related to systolic but not diastolic myocardial function. Dete...
Next Document: Heart failure after myocardial infarction: the importance of diastolic dysfunction. A prospective cl...