Anxiety sensitivity, suffocation fear, trait anxiety, and breath-holding duration as predictors of response to carbon dioxide challenge

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Abstract

We investigated predictors of response to carbon dioxide challenge (i.e. breathing deeply and rapidly into a paper bag for 5 min) in college students. Zero-order correlations indicated that scores on both the Anxiety Sensitivity Index (ASI: Reiss, Peterson, Gursky & McNally, 1986) and the Suffocation Fear Scale (SFS: Rachman & Taylor, 1994), predicted anxious response to challenge, whereas a behavioral measure of carbon dioxide sensitivity (i.e. maximum breath-holding duration) and scores on the State-Trait Anxiety Inventory—Trait form (STAI-T: Spielberger, Gorsuch, Lushene, Vagg & Jacobs, 1983) did not. Multiple regression revealed that all four variables remained in the model, entering in the following order: ASI, breath-holding duration, SFS, and STAI-T. These data suggest that psychological variables reflecting fears of bodily sensations are better predictors of response to challenge than either behavioral sensitivity to carbon dioxide or general trait anxiety.

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