Featured Research

from universities, journals, and other organizations

Exercise Helps Diabetics Control Heart-Related Problems

Date:
October 2, 2002
Source:
Johns Hopkins Medical Institutions
Summary:
Type 2 diabetes and its often-associated high blood pressure present a double-whammy to the heart, causing abnormalities in the organ's structure and function, and damage to blood vessels throughout the body. Now a Johns Hopkins exercise physiologist suggests that exercise, mainly aerobic activity and weight training, may provide multiple solutions to these heart problems.

"Gene therapy is not yet available for diabetics, but 'gym therapy' is." - Kerry J. Stewart, Ed.D.

Type 2 diabetes and its often-associated high blood pressure present a double-whammy to the heart, causing abnormalities in the organ's structure and function, and damage to blood vessels throughout the body. Now a Johns Hopkins exercise physiologist suggests that exercise, mainly aerobic activity and weight training, may provide multiple solutions to these heart problems.

Writing in the Oct. 2 issue of the Journal of the American Medical Association, Kerry J. Stewart, Ed.D., director of clinical exercise physiology at Hopkins, says that regular aerobic and weight-lifting activities not only control blood sugar and lower blood pressure, but also provide cardiovascular benefits. As an added bonus, exercise training reduces total and abdominal fat, both of which lead to improvements in insulin sensitivity, blood pressure and blood vessel function.

Because Type 2 diabetes can double or quadruple the risk of cardiovascular disease, most diabetic patients die of heart-related complications, including coronary artery disease and stroke, Stewart notes.

"There's a great focus on the search for genetic methods of treating diabetes and other chronic conditions," he says, "but although gene therapy is not yet available for diabetics, 'gym therapy' is. The benefits of exercise go way beyond controlling blood sugar. Physicians should urge their patients to become more active."

The prevalence of diabetes in the United States rose from 4.9 percent in 1990 to 7.3 percent in 2000, an increase of 49 percent, the report says. Health care costs associated with diabetes were $98 billion in 1997.

For his review paper on the cardiovascular benefits of exercise training on diabetes and hypertension, Stewart did a computerized search of studies performed between 1985 and 2002 of exercise training, type 2 diabetes and high blood pressure. He examined 235 reports, placing them into categories of heart health measures: functioning of the endothelial cells lining the inside of blood vessels (blood vessels' ability to dilate, allowing more blood to flow during periods of stress); functioning of the left ventricle (the heart's ability to fill with blood and pump it out to the rest of the body); blood vessel stiffening (a sign of early heart disease); and inflammation and size of the left ventricle (indicators of infection/disease).

Analysis of the studies indicates that the strongest evidence for exercise benefits lies in improvements in endothelial and left ventricular function. Exercise also may improve blood vessel stiffness, inflammation and heart size, but the evidence there is weaker. This may be due to fewer studies available in these categories, Stewart says, rather than because of any information showing exercise is not beneficial.

The American College of Sports Medicine and the American Diabetes Association have developed exercise guidelines for type 2 diabetics. Patients should get aerobic exercise such as walking, cycling or swimming three days a week for up to 45 minutes per session. In addition, resistance training using light weights and frequent repetitions should be performed at least twice a week, with a typical workout consisting of a minimum of one set of eight to 10 exercises to cover large muscle groups of the upper and lower body.

Stewart cautions that all diabetic patients check with their health care provider before engaging in a strenuous exercise program, but almost all patients can at least benefit from walking.

Stewart, Kerry J., "Exercise Training and the Cardiovascular Consequences of Type 2 Diabetes and Hypertension," Journal of the American Medical Association, Oct. 2, 2002.

Related Web site:

Johns Hopkins Division of Cardiology: http://www.cardiology.hopkinsmedicine.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. "Exercise Helps Diabetics Control Heart-Related Problems." ScienceDaily. ScienceDaily, 2 October 2002. <www.sciencedaily.com/releases/2002/10/021002070740.htm>.
Johns Hopkins Medical Institutions. (2002, October 2). Exercise Helps Diabetics Control Heart-Related Problems. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2002/10/021002070740.htm
Johns Hopkins Medical Institutions. "Exercise Helps Diabetics Control Heart-Related Problems." ScienceDaily. www.sciencedaily.com/releases/2002/10/021002070740.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How 'Yes Means Yes' Defines Sexual Assault

How 'Yes Means Yes' Defines Sexual Assault

Newsy (Sep. 29, 2014) Aimed at reducing sexual assaults on college campuses, California has adopted a new law changing the standard of consent for sexual activity. Video provided by Newsy
Powered by NewsLook.com
Scientists May Have Found An Early Sign Of Pancreatic Cancer

Scientists May Have Found An Early Sign Of Pancreatic Cancer

Newsy (Sep. 29, 2014) Researchers looked at 1,500 blood samples and determined people who developed pancreatic cancer had more branched chain amino acids. Video provided by Newsy
Powered by NewsLook.com
Colo. Doctors See Cluster of Enterovirus Cases

Colo. Doctors See Cluster of Enterovirus Cases

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Dr.'s Unsure of Cause of Fast-Spreading Virus

Dr.'s Unsure of Cause of Fast-Spreading Virus

AP (Sep. 29, 2014) Doctors at the Children's Hospital of Colorado say they have treated over 4,000 children with serious respiratory illnesses since August. Nine of the patients have shown distinct neurological symptoms, including limb weakness. (Sept. 29) Video provided by AP
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