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Sponsored by: |
National Heart, Lung, and Blood Institute (NHLBI) |
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Information provided by: | National Heart, Lung, and Blood Institute (NHLBI) |
ClinicalTrials.gov Identifier: | NCT00783497 |
High blood pressure is a common health problem among people in the United States. This study will examine the ways that stress and ethnicity play a role in the development of high blood pressure.
Condition |
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Hypertension |
Study Type: | Observational |
Study Design: | Case Control, Cross-Sectional |
Official Title: | Stress, Blood Pressure, & Ethnicity |
Serum, urine
Estimated Enrollment: | 225 |
Study Start Date: | October 2005 |
Estimated Study Completion Date: | December 2010 |
Estimated Primary Completion Date: | September 2010 (Final data collection date for primary outcome measure) |
Groups/Cohorts |
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1
Caucasian Americans
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2
African Americans
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High blood pressure affects nearly one third of all people in the United States. It can be caused by many factors, including obesity, sodium intake, genetics, and stress. Ethnicity appears to also play a role, because African Americans are more susceptible to developing high blood pressure than other ethnic groups, with more than 40% of African Americans diagnosed with this condition. This study will examine the underlying reasons of why stress and African-American ethnicity contribute to high blood pressure risk and how ethnicity and stress interact with each other to increase this risk.
Specifically, study researchers will examine how stress increases blood pressure, how people from different ethnic groups respond to stress differently, and how sleep plays a role in regulating blood pressure levels.
This study will enroll African Americans and Caucasians who have high blood pressure, as well as African Americans and Caucasians who have normal blood pressure. Potential participants will go through a screening process that involves a medical history review, questionnaires, and blood pressure monitoring. Eligible participants will then be admitted to the research clinic for a 2-night stay. Participants' nutrition history and body measurements will be obtained, and a catheter will be inserted into the arm so that blood can be easily collected during the clinic stay. During the night, participants' breathing habits and movements will be monitored while they sleep. During the day, blood pressure and heart activity will be monitored frequently, including when participants are asked to perform mildly stressful tasks, such as giving a short speech. Various medications that affect heart rate and blood pressure will be given at different times during the study, and researchers will monitor participants' reactions to each medication.
Lastly, participants will also complete psychological questionnaires.
Ages Eligible for Study: | 18 Years to 50 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Non-Probability Sample |
Community sample in the San Diego, California metropolitan area
Inclusion Criteria:
Exclusion Criteria:
United States, California | |
University of California, San Diego | Recruiting |
San Diego, California, United States, 92103 | |
Contact: M. Pung, PhD mpung@ucsd.edu |
Principal Investigator: | Joel E. Dimsdale, MD | University of California, San Diego |
Responsible Party: | University of California, San Diego ( Joel E. Dimsdale, MD ) |
Study ID Numbers: | 599, 5 R01 HL036005-23 |
Study First Received: | October 30, 2008 |
Last Updated: | February 19, 2009 |
ClinicalTrials.gov Identifier: | NCT00783497 History of Changes |
Health Authority: | United States: Federal Government |
High Blood Pressure Stress |
Vascular Diseases Stress Hypertension |
Vascular Diseases Cardiovascular Diseases Hypertension |