Interactive Effects of Mental and Physical Stress on Cardiovascular Control

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dc.contributor.advisorSmith, Michael
dc.contributor.committeeMemberRaven, Peter B.
dc.contributor.committeeMemberShi, Xiangrong
dc.creatorWesterholm, Erin Carpenter
dc.date.accessioned2019-08-22T21:15:37Z
dc.date.available2019-08-22T21:15:37Z
dc.date.issued1998-08-01
dc.date.submitted2014-04-09T06:36:22-07:00
dc.description.abstractWesterholm, Erin C., Interactive Effects of Mental and Physical Stress on Cardiovascular Control. Master of Science (Biomedical Sciences, Integrative Physiology), August, 1998, 42 pp., 1 table, 13 figures, 35 references. Mental task and exercise often occur together. Physiological responses to each of these stressors have been studied independently, yet the interactive effects of these stressors are unknown. Hypothesis: Combined mental and physical stress will produce a synergistic interaction. Methods: Twelve healthy subjects were studied by measuring cardiovascular responses to five minutes of static left handgrip alone (25-35% of maximal handgrip strength), mental arithmetic alone, and combined stimuli in random order. Sympathetic nerve activity (SNA, microneurography), mean arterial blood pressure (MAP, Finapres), heart rate (HR, ECG), and vascular resistance (Doppler) were measured. Results: Physical and combined stressors significantly changed SNA, MAP, HR, and FVR. SNA responses to handgrip and the combined stimuli exceeded responses to mental arithmetic alone (p [less than] 0.05), yet no significant difference existed between responses to handgrip alone and the combined stimuli (p=0.33). The three stimuli increased heart rate similarity (p [less than] 0.0006). Conclusion: The data refuted the hypothesis: mental task did not synergistically interact or even add to the stress response elicited by handgrip exercise. Thus these data suggest that mental task and static exercise interact in a redundant manner.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/20.500.12503/29196
dc.language.isoen
dc.provenance.legacyDownloads0
dc.subjectBehavioral Neurobiology
dc.subjectBehavior and Behavior Mechanisms
dc.subjectCardiovascular System
dc.subjectCirculatory and Respiratory Physiology
dc.subjectExercise Science
dc.subjectKinesiology
dc.subjectLife Sciences
dc.subjectMedical Physiology
dc.subjectMedical Sciences
dc.subjectMedicine and Health Sciences
dc.subjectMental and Social Health
dc.subjectNeuroscience and Neurobiology
dc.subjectPhysiology
dc.subjectPsychiatry and Psychology
dc.subjectPsychology of Movement
dc.subjectInteractive effects
dc.subjectmental stress
dc.subjectphysical stress
dc.subjectexercise
dc.subjectphysiological responses
dc.subjectcardiovascular responses
dc.subjectstatic left handgrip
dc.subjectmental arithmetic
dc.subjectsympathetic nerve activity
dc.subjectSNA
dc.subjectmicroneurography
dc.subjectheart rate
dc.subjectMPA
dc.subjectmean arterial blood pressure
dc.subjectvascular resistance
dc.titleInteractive Effects of Mental and Physical Stress on Cardiovascular Control
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentGraduate School of Biomedical Sciences
thesis.degree.disciplineIntegrative Physiology
thesis.degree.grantorUniversity of North Texas Health Science Center at Fort Worth
thesis.degree.nameMaster of Science

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