[Brain blood circulation and oxygen supply in the healthy human being during measured physical loading in a head-down tilt posture].
Eleven healthy male test subjects performed exercises of 600 kgm/min (98 W) for 20 min in the head-down position (-15 degrees). A day before exercises they were catheterized, with catheters implanted into the internal jugular vein and brachial artery. It was shown that exercises in the head-down position led to an increase in cerebral circulation, a decrease in oxygen utilization and a decrease in jugular pressure. CO2 tension in arterial blood and blood outflowing from the brain remained comparatively stable, while base deficiency and buffer capacity decreased by a similar value.
D000136:Acid-Base Equilibrium; D000328:Adult; D001921:Brain / Q000378:metabolism*; D002560:Cerebrovascular Circulation; D006112:Gravitation; D006439:Hemodynamics; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010313:Partial Pressure; D005082:Physical Exertion; D011187:Posture
Krovoobrashchenie i kislorodnoe obespechenie mozga zdorovogo cheloveka vo vremia dozirovannoĭ fizicheskoĭ nagruzki v antiortostaticheskom polozhenii.