The four-year study involved 749 men and women in Italy who were over age 65 and did not have memory problems at the beginning of the study. Researchers measured the amount of energy exerted in the participants’ weekly physical activities, including walking, climbing stairs, and moderate activities, such as house and yard work, gardening, and light carpentry. By the end of the study, 54 people developed Alzheimer’s disease and 27 developed vascular dementia.
The study found the top one-third of participants who exerted the most energy walking were 27 percent less likely to develop vascular dementia than those people in the bottom one-third of the group.
Participants who scored in the top one-third for the most energy exerted in moderate activities lowered their risk of vascular dementia by 29 percent and people who scored in the top one-third for total physical activity lowered their risk by 24 percent compared to those in the bottom one-third.
“Our findings show moderate physical activity, such as walking, and all physical activities combined lowered the risk of vascular dementia in the elderly independent of several sociodemographic, genetic and medical factors,” said study author Giovanni Ravaglia, MD, with University Hospital S. Orsola Malpighi, in Bologna, Italy. “It’s important to note that an easy-to-perform moderate activity like walking provided the same cognitive benefits as other, more demanding activities.”
Ravaglia says it’s possible that physical activity may improve cerebral blood flow and lower the risk of cerebrovascular disease, which is a risk factor for vascular dementia, but further research is needed about the mechanisms operating between physical activity and a person’s memory.
Contrary to some reports, the study found that physical activity was not associated with a reduced risk of Alzheimer’s disease, but Ravaglia says more research is needed before concluding that Alzheimer’s disease is not preventable through exercise.
Angela Babb | EurekAlert!
Amputees can learn to control a robotic arm with their minds
28.11.2017 | University of Chicago Medical Center
The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
12.12.2017 | Physics and Astronomy
12.12.2017 | Earth Sciences
12.12.2017 | Power and Electrical Engineering