Document Detail

Exercise-induced increases in atrial natriuretic factor are attenuated by endurance training.
MedLine Citation:
PMID:  1833428     Owner:  NLM     Status:  MEDLINE    
Short-term exercise has been associated with increased plasma levels of atrial natriuretic factor, a potent dilating and natriuretic hormone. In this study, the effect of exercise training on atrial natriuretic factor release during short-term exercise was investigated in men without a history of cardiovascular or other major disease. A well trained group of 10 men who exercised an average of 6,618 kcal/week was compared with a minimally trained group of 9 men who exercised 1,479 kcal/week. Maximal oxygen uptake was 55.2 ml/kg per min in the well trained group and 42.5 ml/kg per min in the minimally trained group (p less than 0.05). Plasma for atrial natriuretic factor, norepinephrine and epinephrine was obtained at rest, at 4 min of exercise and at maximal exercise. Atrial natriuretic factor was lower at rest in the minimally trained than in the well trained men (23 vs. 35.9 pg/ml, p less than 0.05). At maximal exercise, atrial natriuretic factor increased 2.6 times the value at rest in minimally trained men (59.8 pg/ml, p less than 0.05 vs. rest), but did not change in well trained men (34 pg/ml). In minimally trained men at rest, at 4 min of exercise and at maximal exercise, plasma levels of atrial natriuretic factor correlated with heart rate, cardiac output, mean arterial pressure and plasma levels of norepinephrine and epinephrine; these correlations were not found in the well trained group. Thus, short-term exercise results in a significant increase in atrial natriuretic factor in minimally trained but not in well trained men.(ABSTRACT TRUNCATED AT 250 WORDS)
P J Rogers; G M Tyce; K R Bailey; A A Bove
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  18     ISSN:  0735-1097     ISO Abbreviation:  J. Am. Coll. Cardiol.     Publication Date:  1991 Nov 
Date Detail:
Created Date:  1991-11-19     Completed Date:  1991-11-19     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1236-41     Citation Subset:  AIM; IM    
Department of Physiology, Mayo Clinic, Rochester, Minnesota.
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MeSH Terms
Atrial Natriuretic Factor / blood*
Epinephrine / blood
Exercise / physiology*
Hemodynamics / physiology
Middle Aged
Norepinephrine / blood
Oxygen Consumption / physiology
Physical Education and Training*
Physical Endurance / physiology*
Reg. No./Substance:
51-41-2/Norepinephrine; 51-43-4/Epinephrine; 85637-73-6/Atrial Natriuretic Factor

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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