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.
Brian Lin | EurekAlert!
Further reports about: > Brain Research > Coastal Ocean Science > Hospital > Liu-Ambrose > Medicine > Mobility > Power Plant Technology > UBC > Vancouver Island > cognitive benefits > cognitive function > economic benefits > health care > health services > healthcare system > physical activity > strength
Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
08.08.2018 | Event News
27.07.2018 | Event News
25.07.2018 | Event News
16.08.2018 | Life Sciences
16.08.2018 | Earth Sciences
16.08.2018 | Life Sciences