we exposed healthy adults on three separate occasions to 2 h of 1 ) hypoxic hypobaria ( 410 torr , n = 5 ) , 2 ) hypoxic normobaria ( fractional inspired o2 tension = 0.11 , n = 4 ) , or 3 ) normoxic hypobaria ( 410 torr breathing supplemental o2 , n = 5 ) .
C0004048
inspired
C0035203
breathing