ABSTRACT
Brain natriuretic peptide [BNP] reflects myocardial wall stress. BNP activities are similar to those of atrial natriuretic peptide, including diuresis, natriuresis, hypotension and smooth muscle relaxation as well as ability to inhibit the rennin aldosterone system. It is mainly produced and released into the circulation by the ventricle in response to increased ventricular wall pressure or stretching. Therefore, BNP can be served as a marker of left ventricular dysfunction. The aim of this study was to investigate effect of various professional exercises on plasma BNP levels. We enrolled 20 consecutive healthy professional athletic males from different sporting disciplines including 5 football players, 5 volleyball players, 5 bodybuilders and 5 water- polo players. Plasma BNP samples were taken immediately before and 1 hour after exercise. Plasma BNP level was significantly increased after exercise [30.01 +/- 23.46 vs. 16.72 +/- 10.86 pg/ml; P= 0.042]. The highest increase in BNP level was found among volleyball players [mean values: 19.12 to 43.38 pg/ml; 126.3% increase after volleyball] compared to other exercises. Exercise can increase plasma BNP levels, particularly among volleyball players