@article{ref1,
title="Prevention of loss of consciousness with positive pressure breathing and supinating seat",
journal="Aviation, space, and environmental medicine",
year="1988",
author="Burns, John W.",
volume="59",
number="1",
pages="20-22",
abstract="Maintaining vision and consciousness at high sustained +Gz requires a total body effort for most people, and is very fatiguing. Currently, the only pieces of operational G-protective equipment are the anti-G suit and anti-G valve which provide relaxed G-tolerance protection to about 5.5 G. Protection above 5.5 G requires the anti-G straining maneuver (AGSM). Assisted positive pressure breathing (APPB) has been shown to augment sustained +Gz tolerance and reduce the amount of straining necessary to maintain a specific +Gz level. Moreover the supinating seat has been shown to double relaxed G tolerance at a back angle of 75 degrees from the vertical when compared to relaxed tolerance at a 13 degree or 30 degree position. Problems of cockpit engineering, escape, head-rest angle, restricted rear visibility, and pilot acceptance of a high angle supinated seat may preclude the use of a seat with sufficient back angle to provide &quot;no strain&quot; G protection. Thus, the addition of APPB to a limited protective seat may provide adequate and acceptable G tolerance.<p /><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}