(Press-News.org) A one-year follow-up study on seniors who participated in a strength training exercise program shows sustained cognitive benefits as well as savings for the healthcare system. The research, conducted at the Centre for Hip Health and Mobility at Vancouver Coastal Health and the University of British Columbia, is published today in the Archives of Internal Medicine.
The study is the first to examine whether both cognitive and economic benefits are sustained after formal cessation of a tailored exercise program. It builds on the Brain Power Study, published in the January 2010 issue of Archives of Internal Medicine, which demonstrated that 12 months of once-weekly or twice-weekly progressive strength training improved executive cognitive function in women aged 65- to 75- years- old. Executive cognitive functions are cognitive abilities necessary for independent living.
Both studies were led by Teresa Liu-Ambrose, principal investigator at the Centre for Hip Health and Mobility and Brain Research Centre at Vancouver Coastal Health and UBC, and assistant professor in the Department of Physical Therapy at UBC's Faculty of Medicine. The one year follow-up study found the cognitive benefits of strength training persisted, and with two critical findings.
"We were very surprised to discover the group that sustained cognitive benefits was the once-weekly strength training group rather than the twice-weekly training group," says Liu-Ambrose, who's also a Michael Smith Foundation for Health Research scholar. "What we realized was that this group was more successful at being able to maintain the same level of physical activity achieved in the original study."
In fact, the researchers found that while both the once-weekly strength training group and the control group – which performed twice-weekly balancing and toning exercises – were able to maintain higher levels of activity than when they first began the original study, individuals in the twice per week strength training group showed a reduction in physical activity. This reduction may be due community factors, both a lack of strength or weigh training programs tailored for older adults and the perception from seniors that they may need to undertake an activity program multiple times per week to receive any benefit.
The second important finding relates to the economic benefits of once-weekly strength training. Using the data from the Brain Power Study and the one-year follow-up study, health economists Jennifer Davis and Carlo Marra, research scientists with the Collaboration for Outcomes Research and Evaluation at St. Paul's Hospital and UBC Faculty of Medicine, were able to show that the economic benefits of once-weekly strength training were sustained 12 months after its formal cessation. Specifically, the researchers found the once-weekly strength group incurred fewer health care resource utilization costs and had fewer falls than the twice-weekly balance and tone group.
"This suggests that once-weekly resistance training is cost saving, and the right type of exercise for seniors to achieve maximum economic and health benefits," says Davis.
Cognitive decline among seniors is a pressing health care issue and a key risk factor for falls. Approximately 30 per cent of B.C. seniors experience a fall each year and fall-related hip fractures account for more than 4,000 injures each year at a cost of $75 million to the healthcare system.
The number of seniors in B.C. is expected to increase by 220 per cent by 2031, representing 23.5 per cent of B.C. population. Effective strategies to prevent cognitive decline are essential to improving quality of life for older British Columbians and to save the healthcare system millions in associated costs.
###
Support for this research has been provided by a Michael Smith Foundation for Health Research Establishment Grant, the Vancouver Foundation, and infrastructure support from the Canada Foundation for Innovation.
Until the Brain Power Study, the benefits of resistance training, which is an attractive alternative type of exercise for seniors with limited mobility, on cognitive function and economic benefit has received little investigation. The Centre for Hip Health and Mobility at VCH and UBC is one of few research programs worldwide investigating the role of targeted resistance training in promoting mobility and cognitive in seniors.
The Centre for Hip Health and Mobility, located at the Vancouver General Hospital conducts innovative research programs to decrease the burden of falls, fracture and arthritis across B.C., Canada, and the world. It is the first international research centre to broadly focus on problems affecting the human hip across the lifespan by integrating researchers in various aspects of bone health, falls prevention, and arthritis. The Centre is a partnership of UBC Faculty of Medicine and Vancouver Coastal Health Research Institute. www.hiphealth.ca
The Brain Research Centre comprises more than 200 investigators with multidisciplinary expertise in neuroscience research ranging from the test tube, to the bedside, to industrial spin-offs. The centre is a partnership of UBC Faculty of Medicine and Vancouver Coastal Health Research Institute. www.brain.ubc.ca.
VCH Research Institute is one of Canada's top funded health sciences research centres, with $136 million in total research funding for 2007/2008. The Institute is the research arm of Vancouver Coastal Health Authority and the health partner of the University of British Columbia's Faculty of Medicine. www.vchri.ca
The UBC Faculty of Medicine provides innovative programs in the health and life sciences, teaching students at the undergraduate, graduate and postgraduate levels, and generates more than $200 million in research funding each year. In 2007/08, out of the total UBC research endeavour, 53 per cent, or $247 million, came from academic and clinical teams in the Faculty of Medicine. For more information, visit www.med.ubc.ca.
END
Results from a government-sponsored clinical trial of inactivated 2009 H1N1 influenza vaccine in people with asthma indicate that a single dose of vaccine was safe and induced a strong immune response predictive of protection. The findings also suggest that individuals over the age of 60 who have severe asthma may require a larger dose of vaccine.
The study was cosponsored by the National Institute of Allergy and Infectious Diseases (NIAID) and the National Heart, Lung, and Blood Institute (NHLBI), two components of the National Institutes of Health, and appears online ...
WEST LAFAYETTE, Ind. - Changes in diet have been linked to a reduction of abnormal behaviors in mentally ill people or animals, but a Purdue University study shows that diet might also trigger the onset of mental illness in the first place.
Joseph Garner, an associate professor of animal sciences, fed mice a diet high in sugar and tryptophan that was expected to reduce abnormal hair-pulling. Instead, mice that were already ill worsened their hair-pulling behaviors or started a new self-injurious scratching behavior, and the seemingly healthy mice developed the same abnormal ...
CHAMPAIGN, Ill. – The Obama administration's decision to maintain a ban on oil drilling in the eastern Gulf of Mexico and off the Atlantic and Pacific coasts is a mistake, according to a University of Illinois expert who wrote a six-volume book series on marine pollution.
"It's a ridiculous decision on the part of the Interior Department," said John W. Kindt, a professor of business and legal policy at Illinois. "The previous 180-day moratorium really hurt a lot of businesses. Well, a seven-year ban is going to sting even more."
Kindt says giving the oil companies a ...
From atomic crystals to spiral galaxies, self-assembly is ubiquitous in nature. In biological processes, self-assembly at the molecular level is particularly prevalent.
Phospholipids, for example, will self-assemble into a bilayer to form a cell membrane, and actin, a protein that supports and shapes a cell's structure, continuously self-assembles and disassembles during cell movement.
Bioengineers at the UCLA Henry Samueli School of Engineering and Applied Science have been exploring a unique phenomenon whereby randomly dispersed microparticles self-assemble into ...
When you dive into that salad full of lettuce grown in the American West, there's a good chance you are enjoying the product of irrigation from an underground water source. These hidden groundwater systems are precious resources that need careful management, but regulatory groups have a hard time monitoring them, owing to a lack of accurate data.
Now, scientists at Stanford have found a way to cheaply and effectively monitor aquifer levels in agricultural regions using data from satellites that are already in orbit mapping the shape of Earth's surface with millimeter ...
This past summer saw a revolution in melanoma therapy. Patients whose melanoma lesions contain a mutation in the BRAF gene were successfully treated with a BRAF-specific inhibitor, PLX4032. Reports of the drug trial described shrinking tumors and improved health. Yet seven months after therapy began the tumors returned and resumed growing. Now, scientists at The Wistar Institute explain why: the tumor learns to signal around the blocked gene by adjusting its molecular wiring. They also show how to overcome resistance by simultaneously targeting multiple signaling pathways.
The ...
Stanford, CA— Plants are very sensitive to light conditions because light is their source of energy and also a signal that activates the special photoreceptors that regulate growth, metabolism, and physiological development. Scientists believe that these light signals control plant growth and development by activating or inhibiting plant hormones. New research from Carnegie plant biologists has altered the prevailing theory on how light signals and hormones interact. Their findings could have implications for food crop production.
It was previously known that a plant ...
GREENBELT, Md. -- The size, background ecology, and development patterns of major northeastern cities combine to make them unusually warm, according to NASA scientists who presented new research today at an American Geophysical Union meeting, in San Francisco, Calif.
Summer land surface temperatures of cities in the Northeast were an average of 13°F to 16°F (7°C to 9°C) warmer than surrounding rural areas over a three year period, the new research shows. The complex phenomenon that drives up temperatures of cities such as Boston, Philadelphia, and Washington D.C. is ...
ALBANY, Calif.—Forests in the southwestern United States are changing and will face reduced growth if temperatures continue to rise and precipitation declines during this century, according to a study conducted by a team of scientists from the U.S. Forest Service; University of California, Santa Barbara; U.S. Geological Survey; and University of Arizona. Their findings were released today in the Proceedings of the National Academy of Sciences (PNAS) special issue on climate change.
Using tree-ring data and climate models, the team determined that rising temperatures and ...
(Santa Barbara, Calif.) –– If current climate projections hold true, the forests of the Southwestern United States face a bleak future, with more severe –– and more frequent –– forest fires, higher tree death rates, more insect infestation, and weaker trees. The findings by university and government scientists are published in this week's issue of the Proceedings of the National Academy of Sciences (PNAS).
"Our study shows that regardless of rainfall going up or down, forests in the Southwest U.S. are very sensitive to temperature –– in fact, more sensitive than any ...
