抄録
Since late 1990s, a new hypoxia training device using mixed gas delivered through trainee’s oxygen
mask has been developed in the United States Navy. This “Reduced Oxygen Breathing Device
(ROBD)”has been evaluated in many research projects and has been introduced to military aircrews
training as an alternative method to traditional hypobaric hypoxia training in several countries. The
purpose of this article is to review the ROBD focusing on physiological differences between
normobaric and hypobaric condition.
The ROBD has been reported to induce almost same physiological responses, symptoms and
cognitive impairment as the hypobaric induced hypoxia. Rapid decompression familiarization, which is
only produced by hypobaric chamber training, is one of the issues to consider before introducing the
ROBD to aircrews training. We also summarized the ROBD training protocols combined with a flight
simulator for military aircrews.
