Featured Research

from universities, journals, and other organizations

Heavy exercise may produce asthma-like symptoms even in healthy children, study finds

Date:
May 18, 2010
Source:
American Thoracic Society
Summary:
Children who undergo brief periods of intense exercise may exhibit lung dysfunction or other symptoms similar to those experienced by asthma patients, even when no history of asthma exists, according to a new study.

Children who undergo brief periods of intense exercise may exhibit lung dysfunction or other symptoms similar to those experienced by asthma patients, even when no history of asthma exists, according to a study conducted by researchers at the University of California's Irvine and Miller Children's Hospital.

Related Articles


The results of the study were presented at the ATS 2010 International Conference in New Orleans.

"Studies have shown that in adults, vigorous exercise can cause wheezing and a decrease in pulmonary function testing (PFT), even when there is no prior history of asthma," said lead author and hospital clinician Alladdin Abosaida, M.D. "However, the extent of exercise-associated PFT abnormality in healthy children has received relatively less attention.

"The results of this study indicate that short bouts of heavy exercise do cause a decrease in lung function testing in healthy children without a history of asthma or allergies," he said

Dr. Abosaida and colleagues examined the effects of exercise in 56 healthy children with no clinical history of asthma or allergy, measuring lung function following each exercise test.

"We evaluated two exercise protocols in each child -- a constant work rate exercise test commonly used for evaluation of exercise-induced asthma, and a progressive exercise test typically used to determine an individual's aerobic capacity," Dr. Abosaida said.

Nearly half of the children tested had at least one abnormal result when pulmonary function was measured following exercise, he noted. Decrements in PFT measurements typically occurred when bronchial tubes -- the primary airways allowing air to enter and exit the lungs -- become constricted in response to rigorous activity. This effect, called bronchoconstriction, can arise as the result of an inflammatory response triggered by heavy exercise.

Dr. Abosaida said the results were surprising.

"We did not expect to see pulmonary function abnormalities after short periods of heavy exercise in such a large number of healthy children in our subject population," he said. "We speculate that either the inflammatory response to exercise or cellular changes that may occur as the result of dehydration of the airway surface, or both, led to mild airway obstruction."

Additional research will need to be focused on determining the mechanism of lung dysfunction in children following heavy exercise, and may help identify potential interventions, Dr. Abosaida said.

"More studies are needed to understand the pathogenesis and management plan of exercise-induced bronchoconstriction in healthy children," he added. "In addition, further comparisons are needed between the two exercise protocols for screening of bronchoconstriction to avoid the false negative results that may occur by using a single type of test."


Story Source:

The above story is based on materials provided by American Thoracic Society. Note: Materials may be edited for content and length.


Cite This Page:

American Thoracic Society. "Heavy exercise may produce asthma-like symptoms even in healthy children, study finds." ScienceDaily. ScienceDaily, 18 May 2010. <www.sciencedaily.com/releases/2010/05/100518170046.htm>.
American Thoracic Society. (2010, May 18). Heavy exercise may produce asthma-like symptoms even in healthy children, study finds. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2010/05/100518170046.htm
American Thoracic Society. "Heavy exercise may produce asthma-like symptoms even in healthy children, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/05/100518170046.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
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