Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Sleep quality and duration improve cognition in aging populations

17.06.2014

University of Oregon-led research finds women sleeping longer and struggling with quality

Maybe turning to sleep gadgets -- wristbands, sound therapy and sleep-monitoring smartphone apps -- is a good idea. A new University of Oregon-led study of middle-aged or older people who get six to nine hours of sleep a night think better than those sleeping fewer or more hours.


University of Oregon doctoral student Theresa E. Gildner led a study, supported by the NIH, that looked at sleep quality and duration, and the impacts of both on health. The results are the first to emerge from a longitudinal study.

Credit: University of Oregon

The study, published in the June issue of the Journal of Clinical Sleep Medicine, reaffirms numerous small-scale studies in the United States, Western Europe and Japan, but it does so using data compiled across six middle-income nations and involving more than 30,000 subjects for a long-term project that began in 2007.

"We wanted to look at aging, particularly dementia and cognitive decline as people get older, and the importance of sleep. Our results provide compelling evidence that sleep matters a lot," said lead author Theresa E. Gildner, a doctoral student in the UO's anthropology department. "In all six countries, which are very different culturally, economically and environmentally -- despite all these differences -- you see similar patterns emerging."

... more about:
»anthropology »cognitive »populations »sleep »sleeping

Video Overview of Project and Study: http://youtu.be/5wx-aZLY5W4

The study, based on the first wave of data from a continuing long-term project, focuses on people 50 years old and older in China, Ghana, India, Mexico, the Russian Federation and South Africa. Among the key findings were:

  • Men reported higher sleep quality than women in all six nations, with men and women in Mexico reporting the highest. 

     

  • Women reported longer sleep durations than men in all countries except Russia and Mexico. Men and women in South Africa slept longer than in any other country. The least sleep hours for both sexes occurred in India.

     

  • Individuals sleeping less than six hours and more than nine hours had significantly lower cognitive scores compared to those in the intermediate group.

The study concludes that the findings have important implications for future intervention strategies for dementia. The consistent associations between intermediate sleep durations, high sleep quality and enhanced cognitive performance in these diverse populations suggests that improving sleep patterns may help reduce the level of cognitive decline as seen in older adults.

Another important finding, Gildner said, is the gender difference in all sleep and cognition variables. Citing previous studies, the authors hypothesized that women's sleep patterns reflect postmenopausal changes, increased bladder instability and feelings of isolation after the loss of a spouse or lack of social support. Cognition scores of women may result from their sleep difficulties and/or lower educational levels.

The growing database in the long-term study, known as the Study on global AGEing and adult health (SAGE), is allowing researchers to mine many combinations of variables connected to health and lifestyle, said J. Josh Snodgrass, professor of anthropology at the UO. "It also will allow anthropologists to explore cultural factors that may contribute to sleeping and health patterns."

Snodgrass is a key investigator on SAGE, which is funded by a joint agreement of the National Institutes of Health and the World Health Organization.

"This study is hugely powerful and so different from what's been done in the past, simply because of the consistency of how the data was collected -- multi-national, random samples of people," he said. "Sleep is something that is important but often undervalued in our society.

"From doing this research and being familiar with the literature," he added, "an emphasis on sleep issues by the media in recent years is warranted. Every single piece of evidence that people look at now as they are investigating sleep and different health associations is all showing that sleep really, really, really matters. We're just now scratching the surface on what patterns of sleep normally are, and also what are these associations between sleep and health issues."

###

Co-authors with Gildner and Snodgrass were: UO doctoral student Melissa A. Liebert, anthropology; Paul Kowal of the World Health Organization in Geneva, Switzerland, and University of Newcastle Research Centre on Gender, Health, and Aging in Australia; and Dr. Somnath Chatterji of the World Health Organization.

Funding for the joint NIH-WHO agreement comes from the NIH National Institute on Aging (YA1323-08-CN-0020). An additional NIH grant (RO1-AG034479) also supports the project, which will continue to track a variety of changes among the participants over time.

About the University of Oregon

The University of Oregon is among the 108 institutions chosen from 4,633 U.S. universities for top-tier designation of "Very High Research Activity" in the 2010 Carnegie Classification of Institutions of Higher Education. The UO also is one of two Pacific Northwest members of the Association of American Universities.

Sources: Theresa E. Gildner, doctoral student, biological anthropology, 541-346-5109, tgildner@uoregon.edu, and J. Josh Snodgrass, associate professor of anthropology, 541-346-4823, jjosh@uoregon.edu

Jim Barlow | Eurek Alert!
Further information:
http://www.uoregon.edu

Further reports about: anthropology cognitive populations sleep sleeping

More articles from Studies and Analyses:

nachricht Mental Disorders and Physical Diseases Co-occur in Teenagers
08.04.2015 | Universität Basel

nachricht Researchers observe major hand hygiene problems in operating rooms
30.03.2015 | University of Gothenburg

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Astronomers reveal supermassive black hole's intense magnetic field

Astronomers from Chalmers University of Technology have used the giant telescope Alma to reveal an extremely powerful magnetic field very close to a supermassive black hole in a distant galaxy

Astronomers from Chalmers University of Technology have used the giant telescope Alma to reveal an extremely powerful magnetic field very close to a...

Im Focus: A “pin ball machine” for atoms and photons

A team of physicists from MPQ, Caltech, and ICFO proposes the combination of nano-photonics with ultracold atoms for simulating quantum many-body systems and creating new states of matter.

Ultracold atoms in the so-called optical lattices, that are generated by crosswise superposition of laser beams, have been proven to be one of the most...

Im Focus: UV light robot to clean hospital rooms could help stop spread of 'superbugs'

Can a robot clean a hospital room just as well as a person?

According to new research out of the Texas A&M Health Science Center College of Medicine, that is indeed the case. Chetan Jinadatha, M.D., M.P.H., assistant...

Im Focus: Graphene pushes the speed limit of light-to-electricity conversion

Researchers from ICFO, MIT and UC Riverside have been able to develop a graphene-based photodetector capable of converting absorbed light into an electrical voltage at ultrafast timescales

The efficient conversion of light into electricity plays a crucial role in many technologies, ranging from cameras to solar cells.

Im Focus: Study shows novel pattern of electrical charge movement through DNA

Electrical charges not only move through wires, they also travel along lengths of DNA, the molecule of life. The property is known as charge transport.

In a new study appearing in the journal Nature Chemistry, authors, Limin Xiang, Julio Palma, Christopher Bruot and others at Arizona State University's...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

HHL's Entrepreneurship Conference on FinTech

13.04.2015 | Event News

World Conference On Regenerative Medicine 2015: Registration And Abstract Submission Now Open

25.03.2015 | Event News

University presidents from all over the world meet in Hamburg

19.03.2015 | Event News

 
Latest News

Engineer Improves Rechargeable Batteries with MoS2 Nano 'Sandwich'

17.04.2015 | Power and Electrical Engineering

Comparing Climate Models to Real World Shows Differences in Precipitation Intensity

17.04.2015 | Earth Sciences

A blueprint for clearing the skies of space debris

17.04.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>