Does caffeine matter for arousal? Affective and autonomic responses induced by caffeine in coffee intake: evidence from a double-blind tasting task

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dc.contributor.authorRodrigues, Fernando
dc.contributor.authorDiogo, Julien
dc.contributor.authorRodrigues, Carla
dc.contributor.authorFigueira, Cláudia
dc.contributor.authorRosa, Pedro Joel
dc.contributor.institutionHEI-LAB (FCT) - Digital Laboratories for Environments and Human Interactions
dc.date.issued2021-03-26
dc.description.abstractCoffee is consumed worldwide, but there are different types of espresso blends, each with its unique concentration of caffeine, which can have different effects on the human being. The aim of this study was to understand the effect of the impact of caffeine on the autonomic nervous system, evaluating the physiological changes and subjective responses due to different levels of caffeine intake. A double-blind tasting task consisting of one within-subject factor design (caffeine level: high / double caffeine mixture (blend A) vs single-charge caffeine mixture (blend B) vs low-caffeine mixture (blend c) allowed us to assess participants’ autonomic responses using Heart Rate Variability (HRV) and Pupillary Reactivity (PR). Arousal was also assessed through the Self-Assessment Manikin (SAM). Results revealed statistically significant differences in HRV and PR between coffee blends, showing the blend A,a more pronounced autonomic response that blend C. However, no significant differences were found in arousal level among coffee blends. These results are similar to previous research that pointed out to a discordance between subjective and objective measures when caffeine is consumed.pt
dc.description.statusNon peer reviewed
dc.formatapplication/pdf
dc.identifier.citationRodrigues , F , Diogo , J , Rodrigues , C , Figueira , C & Rosa , P J 2021 , ' Does caffeine matter for arousal? Affective and autonomic responses induced by caffeine in coffee intake: evidence from a double-blind tasting task ' , Default journal .
dc.identifier.issn1646-3730
dc.language.isoeng
dc.publisherEdições Universitárias Lusófonas
dc.relation.ispartofDefault journal
dc.rightsopenAccess
dc.subjectPSICOLOGIA
dc.subjectCAFEÍNA
dc.subjectFREQUÊNCIA CARDÍACA
dc.subjectCAFFEINE
dc.subjectHEART RATE
dc.subjectPSYCHOLOGY
dc.titleDoes caffeine matter for arousal? Affective and autonomic responses induced by caffeine in coffee intake: evidence from a double-blind tasting tasken
dc.typearticle

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