Globus M, Melamed E, Keren A, Tzivoni D, Granot C, Lavy S, Stern S
J Cereb Blood Flow Metab. 1983 Sep;3(3):287-90. doi: 10.1038/jcbfm.1983.43.
The effect of supine physical exercise on cerebral blood flow (CBF) was measured in 30 normal subjects with the 133Xe inhalation technique. The CBF measurements were correlated to changes in PCO2, heart rate, and blood pressure, and to cardiac output and right atrial pressure in 10 of the subjects who underwent Swan-Ganz catheterization. No significant change was found in CBF during physical exercise, although a marked increase in cardiac output, blood pressure, and right atrial pressure and a mild decrease in PCO2 were found. Cerebrovascular resistance increased by 38%, in contrast to a decrease of 33% in the peripheral vascular resistance. The factors that affect the mechanism of cerebrovascular autoregulation during exercise are discussed.
采用吸入¹³³氙技术，对30名正常受试者测量了仰卧位体育锻炼对脑血流量（CBF）的影响。在10名接受Swan - Ganz导管插入术的受试者中，将CBF测量值与PCO₂、心率、血压的变化以及心输出量和右心房压力相关联。体育锻炼期间未发现CBF有显著变化，尽管心输出量、血压和右心房压力显著增加，PCO₂轻度降低。脑血管阻力增加了38%，而外周血管阻力下降了33%。讨论了运动期间影响脑血管自动调节机制的因素。
