To explore the effects of hypoxia on human mood state in extreme hot and wet environment.The mood states of 12 healthy male volunteers were evaluated by self-assessment questionnaires,Profile of mood state (POMS) and state anxiety-inventory (S-AI),then random exposure to 2000m,2500m,and 3000m for 1 h in a hypobaric chamber.The data at baseline level were taken as the line control.The negative mood state factor points (T,C,D,F)and S-AI points increased gradually as the altitude level increased.While (V) points had a tendency to decrease,no significant difference was found in the points of (A) even under exposure to 3000m.At the early period of 2000m exposure the points of(T) and S-AI scores were higher than those of control level,then dropped to baseline level when exposure to this altitude for 1 h.Exposure to hypoxia at 2000 m for 1 h has adverse effect on mood state of healthy person and the negative effect was further aggravated with the increment of altitude level.
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