Secretory immunoglobulin A and cardiovascular reactions to mental arithmetic and cold pressor

Authors


Address reprint requests to: Gonneke Willemsen, School of Sport and Exercise Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, England. E-mail: willemah@sportex.bham.ac.uk.

Abstract

Secretory immunoglobulin A (sIgA) in saliva and cardiovascular reactions to mental arithmetic and cold pressor tasks were recorded in 16 healthy young men on two sessions, 4 weeks apart. Both tasks elicited significant increases in sIgA secretion rate, reflecting increases in both salivary volume and sIgA concentration. Whereas mental arithmetic elicited a mixed pattern of alpha- and beta-adrenergic cardiovascular reactions, the pattern of reactions to cold pressor was predominantly alpha-adrenergic. Task levels of sIgA secretion rate, sIgA concentration, and saliva volume showed moderate to high test–retest reliability (r= .52–.83), although test-retest correlations were less impressive for change scores (r=−.19–.53). The pattern of correlations between change in sIgA secretion rate and cardiovascular reactivity variables was inconsistent.

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