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Atrial natriuretic polypeptide during exercise in healthy man
1Department of Medicine, Kyoto University School of Medicine, Japan.
Acta Endocrinologica
|September 1, 1987
Summary
Exercise increases atrial natriuretic polypeptide levels in healthy men. Higher intensity exercise leads to a greater release of atrial natriuretic polypeptide (ANP), correlating with increased heart rate and norepinephrine.
Area of Science:
- Cardiology
- Endocrinology
- Exercise Physiology
Background:
- Atrial natriuretic polypeptide (ANP) is a hormone involved in cardiovascular regulation.
- Understanding ANP release during physical activity is crucial for assessing cardiac function.
Purpose of the Study:
- To investigate the effect of graded exercise on plasma ANP levels in healthy men.
- To determine the relationship between exercise intensity and ANP release.
Main Methods:
- Eight healthy men performed two exercise tests on a bicycle ergometer at 20% and 40% of maximal oxygen uptake.
- Plasma concentrations of ANP, norepinephrine, and renin activity were measured.
- Heart rate and systolic blood pressure were monitored.
Main Results:
- Plasma ANP levels increased with exercise intensity, approximately doubling at 40% maximal oxygen uptake.
- The increase in ANP was significantly greater during higher intensity exercise.
- ANP levels correlated positively with heart rate, systolic blood pressure, and plasma norepinephrine.
Conclusions:
- Plasma ANP concentration is sensitive to exercise workload intensity.
- Exercise serves as a valuable tool for evaluating the cardiac ANP-releasing function.