Sturges L V, Goetsch V L, Ridley J, Whittal M
West Virginia University, USA.
J Anxiety Disord. 1998 Mar-Apr;12(2):103-15. doi: 10.1016/s0887-6185(98)00004-8.
Twenty-four female undergraduates, 12 high on anxiety sensitivity and 12 low on anxiety sensitivity, were subjected to a hyperventilation challenge task. Physiologic and subjective measures of arousal and distress were obtained before, during, and after the hyperventilation challenge. Alternating between the eight 15-second intervals of hyperventilation, participants engaged in a heartbeat-tracking task for eight 10-second intervals to assess interoceptive acuity. Although the hyperventilation challenge produced phase main effects for physiologic arousal, and group and time main effects for subjective distress, there were no significant interaction effects. Results revealed no significant interoceptive acuity differences across the low and high anxiety sensitivity groups. However, subjective ratings of physiological sensations during hyperventilation were significantly greater for the high anxiety sensitivity group. Hierarchical multiple regression analyses revealed that anxiety sensitivity accounted for additional variance beyond trait anxiety in explaining subjective ratings of arousal and distress in this nonclinical sample in response to a hyperventilation challenge.
24名女大学生，其中12名焦虑敏感性高，12名焦虑敏感性低，接受了一项过度通气挑战任务。在过度通气挑战前、期间和之后，获取了生理和主观的唤醒及痛苦测量数据。在八个15秒的过度通气间隔之间，参与者进行了八个10秒的心跳跟踪任务，以评估内感受敏锐度。尽管过度通气挑战对生理唤醒产生了阶段主效应，对主观痛苦产生了组和时间主效应，但没有显著的交互效应。结果显示，低焦虑敏感性组和高焦虑敏感性组之间在内感受敏锐度上没有显著差异。然而，高焦虑敏感性组在过度通气期间对生理感觉的主观评分显著更高。分层多元回归分析表明，在这个非临床样本中，针对过度通气挑战，焦虑敏感性在解释唤醒和痛苦的主观评分时，除特质焦虑外还解释了额外的方差。
