Featured Research

from universities, journals, and other organizations

Structure Of Heart Can Be Changed Through Exercise

Date:
July 29, 2008
Source:
Madrimasd
Summary:
Just like any other muscle, the structure of the heart can be changed through exercise. However, this adaptation process takes longer than it takes the muscle to revert to its original conditions. Researchers have studied this process in well trained hearts during their investigations to identify pathologies.

Just like any other muscle, the structure of the heart can be changed through exercise. However, this adaptation process takes longer than it takes the muscle to revert to its original conditions. Researchers from the Universidad Politécnica de Madrid (UPM) have studied this process in well trained hearts during their investigations to identify pathologies.

Related Articles


Certainly everyone has at some point realized that the efforts at the gym result in increased muscle tone, even if this is not easy to maintain. The same applies to the heart; after enduring intense physical exercise some of its characteristics change. Thanks to modern imaging technology, in particular echocardiography, the study of such characteristics has greatly improved.

In sports medicine, it is very important to know how the heart adapts and regresses to its original state in athletes who train intensively. The information of the regression of the heart to a normal status when the training stimulus is removed is used by sports cardiologists to delimit the physiologic adaptation of the pathology.

In general, all the studies carried out with echocardiography for sports people with high levels of heart adaptation (rowers, cyclists, long distance runners…) have proven that the effects of heart training are increases in the size of the cavities (mainly the left ventricle) and thickness of the myocardium. Nonetheless, the regression of echocardiographic measurements caused by the decrease in training intensity has so far shown contradictory results.

Correctly interpreting the echocardiographic images and understanding the regression of the heart to its initial status is crucial, as there are heart diseases that resemble the natural adaptation caused by training. For this reason, since the initial study with sports athletes, there have been numerous others with the direct or indirect objective of determining the differences between a healthy heart and an unhealthy one.

Researchers from the Laboratorio de Fisiología del Esfuerzo of the Facultad de Ciencias de la Actividad Física y del Deporte of the Universidad Politécnica de Madrid, in collaboration with British and Italian scientists, have studied the reasons for the inconclusive results, that up to now have resulted from the study of the adaptation and regression caused by training.

The main conclusion is that regression is a relevant process when attempting to distinguish the physiological phenomenon that the training represents from the effects of heart diseases. In the case of a healthy trained heart, it reverts to it's original measurements once the stimulus disappears, as opposed to the case of an ill heart (“Hypertrophy” or “Dilatation of the heart”) that might exhibit similar alterations, but maintains or aggravates these produced changes. When an exaggerated hypertrophy is detected in an examination by sports cardiology services, the treatment to be followed is precisely to change the training regime.

In order to understand the technical limitations of echocardiography in determining the small variations that could be produced when the cavities size and the myocardium thickness are measured, it is convenient to look at some pictures.

Figure one shows an echocardiographic image, to the left in one dimension and to the right in two dimensions. The "area” to be measured is registered in two dimensions, but the measurements are taken in one dimension only. In figure two, a freehand representation of the image shown in figure one is represented. The average variation of thickness demonstrated by the different studies that were analysed range from 1 to 5 mm, which gives an idea of the rigour necessary to evaluate echocardiographies.


Story Source:

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


Cite This Page:

Madrimasd. "Structure Of Heart Can Be Changed Through Exercise." ScienceDaily. ScienceDaily, 29 July 2008. <www.sciencedaily.com/releases/2008/07/080728111356.htm>.
Madrimasd. (2008, July 29). Structure Of Heart Can Be Changed Through Exercise. ScienceDaily. Retrieved January 26, 2015 from www.sciencedaily.com/releases/2008/07/080728111356.htm
Madrimasd. "Structure Of Heart Can Be Changed Through Exercise." ScienceDaily. www.sciencedaily.com/releases/2008/07/080728111356.htm (accessed January 26, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Monday, January 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Mistakes Should Serve a Lesson Says WHO

Ebola Mistakes Should Serve a Lesson Says WHO

AFP (Jan. 25, 2015) — The World Health Organization&apos;s chief on Sunday admitted the UN agency had been caught napping on Ebola, saying it should serve a lesson to avoid similar mistakes in future. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com
Disneyland Measles Outbreak Spreads To 5 States

Disneyland Measles Outbreak Spreads To 5 States

Newsy (Jan. 24, 2015) — Much of the Disneyland measles outbreak is being blamed on the anti-vaccination movement. The CDC encourages just about everyone get immunized. Video provided by Newsy
Powered by NewsLook.com
Growing Measles Outbreak Worries Calif. Parents

Growing Measles Outbreak Worries Calif. Parents

AP (Jan. 23, 2015) — Public health officials are rushing to contain a measles outbreak that has sickened 70 people across 6 states and Mexico. The AP&apos;s Raquel Maria Dillon has more. (Jan. 23) Video provided by AP
Powered by NewsLook.com
Smart Wristband to Shock Away Bad Habits

Smart Wristband to Shock Away Bad Habits

Reuters - Innovations Video Online (Jan. 23, 2015) — A Boston start-up is developing a wristband they say will help users break bad habits by jolting them with an electric shock. Ben Gruber reports. 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