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Metabolically exaggerated cardiac reactions to acute psychological stress revisited

The reactivity hypothesis postulates that large magnitude cardiovascular reactions to psychological stress contribute to the development of pathology. A key but little tested assumption is that such reactions are metabolically exaggerated. Cardiac activity, using Doppler echocardiography, and oxygen...

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Published in:Psychophysiology 2009-03, Vol.46 (2), p.270-275
Main Authors: Carroll, Douglas, Phillips, Anna C., Balanos, George M.
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Language:English
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description The reactivity hypothesis postulates that large magnitude cardiovascular reactions to psychological stress contribute to the development of pathology. A key but little tested assumption is that such reactions are metabolically exaggerated. Cardiac activity, using Doppler echocardiography, and oxygen consumption, using mass spectrometry, were measured at rest and during and after a mental stress task and during graded submaximal cycling exercise. Cardiac activity and oxygen consumption showed the expected orderly association during exercise. However, during stress, large increases in cardiac activity were observed in the context of modest rises in energy expenditure; observed cardiac activity during stress substantially exceeded that predicted on the basis of contemporary levels of oxygen consumption. Thus, psychological stress can provoke increases in cardiac activity difficult to account for in terms of the metabolic demands of the stress task.
doi_str_mv 10.1111/j.1469-8986.2008.00762.x
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ispartof Psychophysiology, 2009-03, Vol.46 (2), p.270-275
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source Wiley; SPORTDiscus with Full Text
subjects Acute Disease
Additional cardiac activity
Cardiac output
Cardiac Output - physiology
Cardiology
Data Interpretation, Statistical
Exercise
Heart - physiopathology
Heart rate
Heart Rate - physiology
Humans
Male
Metabolism
Mind body relationship
Oxygen consumption
Oxygen Consumption - physiology
Psychological stress
Psychology
Stress
Stress, Psychological - metabolism
Stress, Psychological - physiopathology
Stroke Volume - physiology
Young Adult
title Metabolically exaggerated cardiac reactions to acute psychological stress revisited
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