Featured Research

from universities, journals, and other organizations

Heartbeat And Breathing Cycles

Date:
February 1, 2007
Source:
American Institute Of Physics
Summary:
Heartbeat and breathing cycles can become synchronized, a new study shows. Some signs of phase synchrony have been found before, but only in small samples of a dozen or so subjects. By contrast, the study performed by scientists at Bar-Ilan University (Israel), and the Martin-Luther University and the Philipps University (both in Germany), includes 112 healthy subjects of varying ages, men and women, for a variety of sleep stages.

Heartbeat and breathing cycles can become synchronized, a new study shows.

Looking for patterns in the sequence of human heartbeats is a much studied subject; evidence for pattern-revealing characteristics such as chaos and fractal or spiral geometry have been sought. Breathing, which is more under direct conscious control than heartbeat, is much less studied.

Part of the problem with searching for a breathing-heartbeat correlation is that these systems have very different rhythms. The heart normally beats 60 to 70 times per minute, while the breathing rate is about one-fifth of that. Furthermore, the heart and breathing phenomena are complex; consequently at least for periods of awakeness or rapid-eye-movement (REM) sleep little or no phase synchrony (that is, breathing and heartbeat recurring with a consistent relation to each other) can be found.

However, solid evidence has now been found for a breathing-heartbeat correlation for periods of deep sleep. Some signs of phase synchrony have been found before, but only in small samples of a dozen or so subjects. By contrast, the study performed by scientists at Bar-Ilan University (Israel), and the Martin-Luther University and the Philipps University (both in Germany), includes 112 healthy subjects of varying ages, men and women, for a variety of sleep stages.

The researchers conclude, for one thing, that the breathing rate affects the heart rate but not the other way around. Both the breathing oscillation and heartbeat oscillation are disturbed by the kinds of noise superimposed by higher brain activity present, such as in REM sleep. Jan Kantelhardt is sure enough of the heart-breathing correlation that he believes the sleep stages could now be determined by measuring heartbeat rather than measuring brain waves.

The researchers are also hoping to establish careful heart-breathing correlations for patients with heart problems, the better to develop diagnostic devices.


Story Source:

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


Cite This Page:

American Institute Of Physics. "Heartbeat And Breathing Cycles." ScienceDaily. ScienceDaily, 1 February 2007. <www.sciencedaily.com/releases/2007/01/070130122437.htm>.
American Institute Of Physics. (2007, February 1). Heartbeat And Breathing Cycles. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2007/01/070130122437.htm
American Institute Of Physics. "Heartbeat And Breathing Cycles." ScienceDaily. www.sciencedaily.com/releases/2007/01/070130122437.htm (accessed July 28, 2014).

Share This




More Health & Medicine News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com
Google's Next Frontier: The Human Body

Google's Next Frontier: The Human Body

Newsy (July 27, 2014) Google is collecting genetic and molecular information to paint a picture of the perfectly healthy human. Video provided by Newsy
Powered by NewsLook.com
What's To Blame For Worst Ebola Outbreak In History?

What's To Blame For Worst Ebola Outbreak In History?

Newsy (July 27, 2014) A U.S. doctor has tested positive for the deadly Ebola virus, as the worst-ever outbreak continues to grow. Video provided by Newsy
Powered by NewsLook.com
Losing Sleep Leaves You Vulnerable To 'False Memories'

Losing Sleep Leaves You Vulnerable To 'False Memories'

Newsy (July 27, 2014) A new study shows sleep deprivation can make it harder for people to remember specific details of an event. 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:
from the past week

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