Abstract
Baroreceptor sensitivity (BRS) is considered a powerful prognostic factor in cardiovascular health. This study investigated the possibility of modifying the baroreflex cardiac function through biofeedback. Thirty-two psychology students underwent 3 biofeedback sessions, with four 5-min trials each, in which they had to increase and decrease baroreflex function. BRS was assessed by a system that analyzed baroreflex cardiac function on-line using a noninvasive spontaneous sequence method in the time domain. Baroreceptor parameters were differentiated in terms of blood pressure increases (“up” sequences) or blood pressure decreases (“down” sequences). BRS in the “up” sequences increased during the Increase Condition and decreased during the Decrease Condition. BRS in the “down” sequences decreased during the Decrease Condition but was unchanged during the Increase Condition. The increase in BRS during the Increase Condition was associated with a significant reduction in blood pressure and increase in heart period. The opposite cardiovascular changes were observed during the Decrease Condition. Suggestions for future research were discussed.
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Reyes del Paso, G.A., González, M.I. Modification of Baroreceptor Cardiac Reflex Function by Biofeedback. Appl Psychophysiol Biofeedback 29, 197–211 (2004). https://doi.org/10.1023/B:APBI.0000039058.68746.ad
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DOI: https://doi.org/10.1023/B:APBI.0000039058.68746.ad