目的 观察立位耐力试验中微循环的变化,推断它们之间的关联性。方法 选健康飞行员46例,静卧10min,在3s内站起,测即刻、站立10 min、20 min的血压、脉搏。同时用显微镜观察甲襞微循环变化。结果 全部受试者均为阴性,但心率加快,血管襞清晰度变差,数目减少。10 min后襞顶宽度变窄,动、静脉直径变细。有自觉症状者微血管出现闪现现象。结论 人体的立位耐力与微循环状态密切相关。微血管闪现的原因待深入研究。 Objective To observe the changes of microcirculation in standing endurance test and infer the correlation between them. Methods Healthy pilots were selected 46 cases, lying 10min, standing within 3s, measured immediately, standing 10 min, 20 min of blood pressure, pulse. At the same time with a microscope to observe changes in nailfold microcirculation. Results All the subjects were negative, but the heart rate increased, the vas deferens sharpness deteriorated, the number decreased. After 10 min, the width of the tip narrowed, and the diameter of the vein and vein became thinner. There are symptoms of microvascular flash phenomenon. Conclusion The body’s standing endurance is closely related to the state of microcirculation. The reason why micro-vessels flashed to be further studied.