Navigation Links
Exercise Might Slow Brain Shrinkage in Alzheimer's Patients
Date:7/14/2008

Study found those who were more fit had larger brains

MONDAY, July 14 (HealthDay News) -- Men and women with early-stage Alzheimer's disease who were more physically fit also had larger brains compared to their counterparts in less stellar shape.

The findings, though preliminary, may indicate that staying physically fit could slow the brain atrophy (shrinkage) associated with Alzheimer's disease. Or they may indicate that some common underlying process affects both brain atrophy and cardiorespiratory fitness.

"This is a valid, reliable comparison, [but] it's cross-sectional, it provides only a snapshot of fitness as it relates to brain volume," said Dr. Gary Kennedy, director of geriatric psychiatry at Montefiore Medical Center in New York City. "We can't say if increased fitness increases brain volume. Animal models show this is possible. This sets the stage for an interventional study."

The findings are published in the July 15 issue of Neurology.

In older adults without dementia, staying in good physical shape may help offset the changes in the brain, such as cognitive decline, associated with normal aging.

But experts have not yet clearly defined whether or not physical activity has an effect on those with Alzheimer's.

"We're interested in how exercise impacts the Alzheimer's disease process. There's a lot of data in normal older adults that exercising and fitness may have a beneficial effect on brain health, but there's not a lot on Alzheimer's in terms of studies to draw on to inform our recommendations for exercise and fitness," said study author Dr. Jeffrey Burns, director of the Alzheimer's and Memory Program at the University of Kansas School of Medicine in Kansas City. "We're interested in better defining that relationship."

For this study, 57 people with early-stage Alzheimer's and 64 people without dementia, all aged 60 and over, underwent standard fitness tests and MRI brain scans.

"We used an objective, gold-standard measure of fitness which hadn't been assessed in Alzheimer's patients yet, cardiorespiratory fitness, or VO2 peak, where we basically measure how much work someone is capable of doing," Burns explained.

Participants walked on a treadmill while their oxygen consumption was measured. "At their peak, how much oxygen they're consuming is a measure of how physically fit they are," Burns said.

MRI scans measured brain atrophy.

The VO2 peak was slightly lower in people with Alzheimer's compared to controls. And individuals with Alzheimer's who were less physically fit had quadruple the amount of brain shrinkage compared to normal older adults.

"The people with higher fitness levels had larger brains, and there was a strong correlation between the two," Burns explained. "We're limited because of the study design, but it could suggest that maintaining fitness may have a beneficial effect on the Alzheimer's disease process."

"We didn't find fitness to be associated clearly with cognitive performance, but that may be, because we need to study more people or the cognitive performance measures may not be sensitive enough," he added.

The study pointed to three possible explanations for the relationship: cardiorespiratory fitness affects brain atrophy related to Alzheimer's disease; the Alzheimer's disease process affects fitness; or some other, as-yet-unknown factor underlies both Alzheimer's-related brain atrophy and physical fitness.

"We're designing a study where we try to establish the cause and effect," Burns said. "Can we use exercise to enhance fitness in Alzheimer's disease and, by doing that, will it affect disease progression?"

More information

The Alzheimer's Association's Maintain Your Brain program has more on how lifestyle factors affect your risk for dementia.



SOURCES: Jeffrey Burns, M.D., associate professor, neurology, and director, Alzheimer's and Memory Program, University of Kansas School of Medicine, Kansas City; Gary Kennedy, M.D., director, geriatric psychiatry, Montefiore Medical Center, New York City; July 15, 2008, Neurology


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Exercise and yoga improves quality of life in women with early-stage breast cancer
2. Studies Prove Exercise Can Heal the Body Mind and Soul
3. 1 in 3 Varsity Athletes Has Exercise-Induced Asthma
4. Using the Internet to Promote Exercise
5. Less than 3 percent of UK 11-year-olds take enough exercise
6. Study fuels debate over whether exercise and body size influence ovarian cancer risk
7. Creatine in addition to exercise enhances strength in older adults
8. American Council on Exercise Offers 10 Tips for Surviving the Holidays
9. Highlands Acquisition Corp. Announces Exercise of Over-Allotment Option
10. Exercise And Health: Use Your Heart Rate As a Guide
11. Nine of 10 Women Attempt Exercise Goals After Initial Failure, Survey Shows
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Exercise Might Slow Brain Shrinkage in Alzheimer's Patients 
(Date:4/28/2017)... ... ... Getting enough sleep affects much more than energy – it also has mental and physical ... compromise motor reaction time, which can increase the risk of having a car accident. ... from the NSF to help you sleep better and feel better:, , ...
(Date:4/28/2017)... California (PRWEB) , ... April 28, 2017 , ... ... T8 Direct Replace tubes . These lamps offer an instant energy-saving solution for ... need to rewire fixtures or disconnect ballasts. These 50,000 hour rated lamps utilize ...
(Date:4/28/2017)... , ... April 28, 2017 , ... ... been previously exposed to more adverse experiences than children in the general population. ... such as abuse, neglect or other family challenges. While no fault of their ...
(Date:4/28/2017)... , ... April 28, 2017 , ... ... hERG liability could substantially improve drug safety and minimize the cost of development. ... validating ion channel inhibition using cell lines and for cardiac toxicity using induced ...
(Date:4/28/2017)... ... ... Pastor and Overseer at The House of Yahweh in Abilene, Texas, has published a new ... not. Yisrayl says with so many titles and names for the Creator, it’s hard ... a little Scripture, backed with a lot of research, the truth is undeniable. , ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... , April 20, 2017 Research and ... Technologies - Innovation Driven by Rapidly Expanding Injectables Market and Increasing ... their offering. ... for drug delivery technologies will rise from USD 20 Billion in ... Global Drug Delivery Technologies - Innovation Driven by Rapidly Expanding ...
(Date:4/20/2017)... , April 20, 2017 Research ... Pharmacogenomics Market Size, Market Share, Application Analysis, Regional Outlook, Growth ... report to their offering. ... The global pharmacogenomics market was valued at US$ 7,167.6 ... Mn by 2024, expanding at a CAGR of 5.6% from ...
(Date:4/19/2017)... Medical Corporation (TSX: CRH) (NYSE MKT: CRHM) (the "Company"), announces that it ... 2017 at the Sheraton Hotel in Toronto, Ontario ... the Company is scheduled to present on Tuesday, May 2 at ... Chairman of the Board, Tony Holler will also attend ... For more details ...
Breaking Medicine Technology: