August 16, 2005Hypertension
Coffee Blunts Mental Stress–Induced Blood Pressure Increase in Habitual but Not in Nonhabitual Coffee Drinkers
Why the study?
Does coffee or caffeine alter the blood pressure, heart rate, and muscle sympathetic activity response to mental stress in healthy volunteers?
Population
15 healthy volunteers (6 habitual, 9 nonhabitual coffee drinkers)
Comparison
Triple espresso and intravenous caffeine vs Placebo
Design
Other
Authors
Discussion
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Member takes
Implication
Habitual status may modify espresso effects on stress BP; leaves open mechanisms and clinical relevance in prospective studies.
Structured PICO
Does coffee or caffeine alter the blood pressure, heart rate, and muscle sympathetic activity response to mental stress in healthy volunteers?
P
Population
15 healthy volunteers (6 habitual, 9 nonhabitual coffee drinkers)
I
Intervention
Triple espresso and intravenous caffeine
C
Comparator
Placebo
O
Outcome
Blood pressure (BP), heart rate (HR), and muscle sympathetic activity (MSA) response to mental stresssurrogate
Coffee, but not caffeine alone, enhances the cardiovascular response to mental stress in nonhabitual drinkers while blunting it in habitual drinkers, suggesting other ingredients in coffee mediate this effect.
Cite This Study
Sudano et al. (2005) studied this question.