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Directional changes in neutrophil adherence following passive resting versus active imagery.

This study was designed to determine whether increases or decreases in neutrophil adherence could be achieved following a self-regulation (relaxation/imagery) intervention. Fifteen subjects were randomly assigned to one of three conditions. Two experimental groups employed imagery focussed on either increasing or decreasing neutrophil adherence. Subjects had two weeks of self-regulation practice (4 total training sessions) prior to blood drawings. A third group of control subjects had the same number of resting sessions without imagery training. All subjects had blood samples collected before and after either 30 minutes of self-regulation or resting practice for two sessions. Pulse and peripheral finger temperature measures were taken before and after the blood samples. Both experimental groups demonstrated decreases in neutrophil adherence, and the control showed a tendency toward increases in this measure. The psychophysiologic data for the control group was suggestive of a relaxation response. The experimental group that attempted to increase neutrophil adherence demonstrated psychophysiologic responses that were contrary to relaxation. We concluded that an active cognitive exercise or process is associated with decreases in neutrophil adherence irrespective of the exercise. In contrast, relaxation without an active imagery exercise was associated with increases in neutrophil adherence. The results of this study are discussed in terms of behavioral engineering of directional immune changes.