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Apollo Lower Body Negative Pressure (LBNP) Device
Hardware Type
Test Equipment, Lower Body Negative Pressure

Photo Gallery

Lower body negative pressure (LBNP) involves the application of reduced pressure usually to that portion of the body below the level of the iliac crests. LBNP is used as a simulator of orthostatic stress and a preventer of cardiovascular deconditioning. At levels ranging from 40 to 60 mm Hg (53 x 102 to 80 x 102 N/m2) as determined by individual tolerance, LBNP produces changes in heart rate and blood pressure similar to those resulting from upright tilting.

Versions of this Hardware
+ Version Used During the Apollo Missions
+ Version Used During the ASTP Mission