High Blood Pressure
Conditions
Brief summary
The purpose of this study is to help further the understanding of the effects of commercially available high-caffeine containing coffee on blood pressure in healthy adult subjects.
Interventions
Starbuck's brand blonde roast coffee, 20 ounces
Sponsors
Study design
Eligibility
Inclusion criteria
* Age greater than or equal to 18 years old * Male or Female * No prior diagnosis of hypertension * No prior chronic disease requiring medical intervention * Ability to demonstrate correct usage of ambulatory blood pressure monitoring device
Exclusion criteria
\- Age less than 18 years old * Prior chronic disease (such as hypertension) requiring medical intervention * Previously undiagnosed hypertension * Intolerance or allergy to coffee or caffeine * Inability to demonstrate correct usage of ambulatory blood pressure monitoring device * Inability to complete the required abstinence period prior to study interventions * Known pregnancy * Use of birth control * Tobacco use * Participation in other investigational drug studies at the time of this study * Medical illness requiring medical or symptomatic management
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mean change ambulatory blood pressure | baseline to 30 minutes | Participants will wear a ambulatory blood pressure cuff for 24 hours with half hourly measurements of systolic and diastolic blood pressure. Mean change will be measured comparing the same participants blood pressure at 0-3 hour after drinking the coffee versus 0-3 hours after the end of the washout period. |
Countries
United States