Cardiovascular Reactivity to and Recovery from Laboratory Tasks in Low and High Worry Women

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dc.contributor.authorKnepp, Michael Matthewen
dc.contributor.committeechairFriedman, Bruce H.en
dc.contributor.committeememberHarrison, David W.en
dc.contributor.committeememberKim-Spoon, Jungmeenen
dc.contributor.committeememberBell, Martha Annen
dc.contributor.departmentPsychologyen
dc.date.accessioned2014-03-14T21:10:07Zen
dc.date.adate2010-04-15en
dc.date.available2014-03-14T21:10:07Zen
dc.date.issued2010-03-23en
dc.date.rdate2010-04-15en
dc.date.sdate2010-03-25en
dc.description.abstractAnxiety and its cognitive component of worry have been related to exaggerated cardiovascular reactivity and delayed recovery to laboratory stressors, and to increased risk of cardiovascular disease. Previous research on the anxiety-cardiovascular system relationship, including data from Knepp and Friedman (2008), are included to support this project. Two experiments were completed during the course of this study. The first consisted of two peripheral-based body positioning tasks. The second experiment used an active versus passive sympathetic stress task paradigm (mental arithmetic, hand cold pressor). Subjects were nonsmokers free of cardiovascular and neurological disease. Trait worry was examined through the Penn State Worry Questionnaire (PSWQ). Blood pressure recordings and cardiac recordings through ECG and ICG were done in each experiment during seven epochs: an anticipatory baseline with three baselines preceding and three recovery periods following each task. Repeated measures analysis was run on all cardiovascular measures. In the first experiment, high worriers had worsened blood pressure reactivity to task. The second experiment found that high worriers had increased stroke volume across all epochs. There were mixed findings in the studies relating to subjects acclimated to the laboratory experience. Future directions of research relating anxiety, worry, and cardiovascular risk factors are discussed.en
dc.description.degreePh. D.en
dc.identifier.otheretd-03252010-165217en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03252010-165217/en
dc.identifier.urihttp://hdl.handle.net/10919/37508en
dc.publisherVirginia Techen
dc.relation.haspartApprovalLetterKnepp.pdfen
dc.relation.haspartKnepp_MM_D_2010.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAutonomicen
dc.subjectBlood Pressureen
dc.subjectHeart Rate Variabilityen
dc.subjectWorryen
dc.titleCardiovascular Reactivity to and Recovery from Laboratory Tasks in Low and High Worry Womenen
dc.typeDissertationen
thesis.degree.disciplinePsychologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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