Objective To observe the protection effects of a new combined anti-G measure, which is composed of new bladder anti-G system, unassisted positive pressure breathing for G (PBG) and PHP maneuver.

• 目的研究以新型囊式抗荷系统、无胸部代偿的抗荷加压呼吸及PHP动作组成的新型综合抗荷措施防护效果;探讨采用该措施进行防护时伴有的疲劳、疼痛等问题。