Influence of ergometer exercise on aortic pressure-diameter relationship in healthy men.
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概要
- 論文の詳細を見る
In order to investigate the change of the aortic pressure-diameter relationship during exercise, M-mode echograms and/or two-dimensional echograms of the aortic root and of the abdominal aorta were taken before and during supine ergometer exercise in 14 healthy men. The difference of the angle of the ultrasonic beam to the aorta between before and during exercise was too small to influence the measured values.The exercise, which elevated heart rate to 100beats/min, caused a shift of the pressure-diameter relationship curve of the aortic root to a lower diameter (on an average, end-systolic diameter: from 3.1 to 2.9cm, p<0.001; end-diastolic: from 2.9 to 2.7cm, p<0.001). This was also seen in the abdominal aorta. Stroke volume showed no change during exercise. Total peripheral vascular resistance decreased. Central aortic volume decreased.In conclusion, exercise induces active constriction of aorta with dilatation of arterioles. This might be beneficial to push the blood into the peripheral tissues.
- International Heart Journal刊行会の論文
著者
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Yamaguchi Tetsu
Cardiovascular Center, Toranomon Hospital
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Koseki Susumu
Cardiovascular Division Department Of Internal Medicine Institute Of Clinical Medicine The Universit
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Sugishita Yasuro
Cardiovascular Division Department Of Internal Medicine And Department Of Gynecology And Obstetrics
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Ito Iwao
Cardiovascular Division Department Of Internal Medicine And Department Of Gynecology And Obstetrics
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Matsuda Mitsuo
Cardiovascular Division Department Of Internal Medicine Institute Of Clinical Medicine The Universit
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YAMAGUCHI Tetsu
Cardiovascular Division, Department of Medicine, Institute of Clinical Medicine, University of Tsukuba
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KOSEKI Susumu
Cardiovascular Division, Department of Medicine, Institute of Clinical Medicine, University of Tsukuba
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