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本文观察了50名健康男性飞行人员(19～43岁)的坐位下体负压耐力及其心血管反应特点,发现在递增性负压(-4.67～-5.33～-6.67kPa,时间各5min)的作用下,耐受时间为10.03～15(≥)min。根据耐受时间的不同将其分为A组(≥15min)和B组(11.8±1.09min)。在负压作用时,受检者的血液动力学变化明显;但两组比较,除了收缩压的变化组间有明显差别(P<0.05或0.01)外,其他各参数的变化相差均不显著(P>0.05)。
In this study, we observed the negative pressure endurance and cardiovascular responses of 50 healthy male pilots (19-43 years old), and found that in negative pressure (-4.67 ~ -5.33 ~ -6.67kPa, 5min each time) Under the action, the tolerance time was 10.03 ~ 15 (≥) min. According to the different tolerance time, they were divided into A group (≥15min) and B group (11.8 ± 1.09min). In the negative pressure, the subjects had significant hemodynamic changes; however, there was no significant difference between the two groups except for the change of systolic pressure (P <0.05 or 0.01) P> 0.05).