Featured Research

from universities, journals, and other organizations

Blood Pressure Measures During Exercise Can Indicate Unhealthy Hearts

Date:
September 18, 2001
Source:
Johns Hopkins Medical Institutions
Summary:
A blood pressure reading taken during exercise is a more accurate test for early heart disease than one taken at rest, according to a study presented Sept. 14 at the annual meeting of the American Association of Cardiovascular and Pulmonary Rehabilitation (AACVPR) in Minneapolis.

A blood pressure reading taken during exercise is a more accurate test for early heart disease than one taken at rest, according to a study presented Sept. 14 at the annual meeting of the American Association of Cardiovascular and Pulmonary Rehabilitation (AACVPR) in Minneapolis.

Related Articles


The study, conducted by researchers at The Johns Hopkins University School of Medicine in Baltimore, showed that a high pulse pressure -- defined as the difference between systolic blood pressure (the upper number) and diastolic blood pressure (the lower number) -- during exercise was associated with a dysfunction of the endothelial cells lining the blood vessels. These cells control the ability of the blood vessels to dilate, or expand, which allows more blood to flow during periods of stress. Increased pulse pressure is also an indicator of blood-vessel stiffening, which may be a marker of early heart disease. Recent epidemiological studies have shown that pulse pressure is the leading risk factor for cardiovascular disease in the elderly.

"Most clinicians focus on the patient's blood pressure during rest, but our study shows that exaggerated blood pressure during exercise is a more sensitive marker for resistance to blood flow through the arteries, which is a possible sign of atherosclerosis (hardening of the arteries)," says Kerry J. Stewart, Ed.D., lead author of the study and director of cardiac rehabilitation and clinical exercise physiology at Hopkins. "The higher the pulse pressure in response to exercise, the more likely the patient was to have blood vessels that did not expand as expected."

If cells lining the blood vessels are unable to respond well to the increase in blood flow associated with stress and exercise, the heart must work harder and can become enlarged, Stewart says. An enlarged heart heightens a person's risk of heart attack, stroke or heart failure.

For the study, Stewart and colleagues evaluated 35 adults, ages 55 to 75, who had untreated mild hypertension but were otherwise healthy. Researchers measured the participants' resting blood pressure during four or five visits at least one week apart, then compared those measurements to blood pressure readings recorded during maximal effort treadmill exercise tests. They also used ultrasound to measure how well the vessels in the subjects' arms would expand in response to stress.

Other authors of the study were Anita C. Bacher, Katherine L. Turner, Jamie R. DeRegis, Harry A. Silber, Edward P. Shapiro, Jidong Sung and Pamela Ouyang.

Established in 1985, the American Association of Cardiovascular and Pulmonary Rehabilitation (AACVPR) aims to promote health and prevent disease. AACVPR represents more than 3,000 health care professionals worldwide engaged in education, prevention, rehabilitation, research and disease management activities in cardiovascular and pulmonary rehabilitation and prevention programs.

Stewart, K.J. et al., "Pulse Pressure at Maximal Exercise is Associated with Endothelial Function."

Related Web sites:Johns Hopkins Heart Healthhttp://www.jhbmc.jhu.edu/cardiology/rehab/hh_timonium.htm

Information on Heart Disease Treatments at Johns Hopkinshttp://www.hopkinsmedicine.org/heartdisease.html

American Association of Cardiovascular and Pulmonary Rehabilitationhttp://www.aacvpr.org


Story Source:

The above story is based on materials provided by Johns Hopkins Medical Institutions. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins Medical Institutions. "Blood Pressure Measures During Exercise Can Indicate Unhealthy Hearts." ScienceDaily. ScienceDaily, 18 September 2001. <www.sciencedaily.com/releases/2001/09/010917075129.htm>.
Johns Hopkins Medical Institutions. (2001, September 18). Blood Pressure Measures During Exercise Can Indicate Unhealthy Hearts. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2001/09/010917075129.htm
Johns Hopkins Medical Institutions. "Blood Pressure Measures During Exercise Can Indicate Unhealthy Hearts." ScienceDaily. www.sciencedaily.com/releases/2001/09/010917075129.htm (accessed January 31, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, January 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

CDC: Get Vaccinated for Measles

CDC: Get Vaccinated for Measles

Reuters - US Online Video (Jan. 30, 2015) The CDC is urging people to get vaccinated for measles amid an outbreak that began at Disneyland and has now infected more than 90 people. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Obama To Outline New Plan For Personalized Medicine

Obama To Outline New Plan For Personalized Medicine

Newsy (Jan. 30, 2015) President Obama is expected to speak with drugmakers Friday about his Precision Medicine Initiative first introduced last week. Video provided by Newsy
Powered by NewsLook.com
NFL Concussions Down; Still on Parents' Minds

NFL Concussions Down; Still on Parents' Minds

AP (Jan. 30, 2015) The NFL announced this week that the number of game concussions dropped by a quarter over last season. Still, the dangers of the sport still weigh on players, and parents&apos; minds. (Jan. 30) Video provided by AP
Powered by NewsLook.com
U.S. Wants to Analyze DNA from 1 Million People

U.S. Wants to Analyze DNA from 1 Million People

Reuters - US Online Video (Jan. 30, 2015) The U.S. has proposed analyzing genetic information from more than 1 million American volunteers to learn how genetic variants affect health and disease. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins