Lp. Krock et al., REDUCED PRESSURE IN EXTENDED COVERAGE ANTI-G-TROUSERS WITH ASSISTED PRESSURE BREATHING, Aviation, space, and environmental medicine, 65(4), 1994, pp. 287-292
Six Swedish Air Force pilots and two Armstrong Laboratory subjects vol
unteered for this study to determine whether reduced pressure in exten
ded coverage anti-Ci trousers (ECT), in combination with positive pres
sure breathing for G protection, affected +Gz tolerance. Group mean gr
adual onset run (GOR) time for the low pressure schedule (0.8 psig.G(-
1)) wets significantly different from the other two conditions (1.1, 1
.5 psig.G(-1))-84.1, 95.6, and 94.1 s, respectively. Group mean simula
ted aerial combat maneuver (SACM) times statistically differed between
the low and middle pressure rates compared to the highest pressure sc
hedule-147.6, 164.8 and 232.3 s, respectively. SACM heart rats (HR) re
sponses for the +9 Gz plateaus were not statistically different among
conditions. How ever, +5 Gz HR's were lower for the highest pressure c
ondition. Similarities were identified between the middle and high pre
ssurization conditions for GOR. However, reducing pressure in the ECT
during SACM exposures was not supported by these delta.