Physical fitness crucial for fighting age-related cognitive decline

Three recent studies point to the importance of cardiorespiratory fitness for older adults wanting to prevent cognitive decline.

Cardiorespiratory fitness improves executive function & episodic memory in older adults

A study comparing 33 young adults (age 18-31) and 27 older adults (age 55-82) has found that older adults with higher cardiorespiratory (i.e., fitness) levels performed as well as young adults on executive function tests. On long-term memory tests (a face–name memory task, and a visual episodic memory task), young adults performed better than older fit adults, who in turn performed better than less fit older adults.

Fitness had no effect on young adults' memory or executive functions (although bearing in mind other research, I'd suggest that this may be due to the cognitive testing being insufficiently demanding).

The finding confirms earlier research linking cardiorespiratory fitness with better executive function in older adults, and extends the association to episodic memory.

http://www.eurekalert.org/pub_releases/2014-12/bumc-sfc122214.php

Regular exercise improves cerebral blood flow & short-term memory in older adults

A German study involving 40 healthy but initially sedentary older adults (aged 60-77) has found that those assigned to an exercise group (regular exercise on a treadmill for 3 months) improved not only their physical fitness but also their visual memory. This memory improvement was accompanied by increased blood flow and increased volume in the hippocampus. This improvement was seen in 7 of the 9 exercisers who were no older than 70. However, it tended not to be seen in those older than 70.

The control group (who also showed no such improvement) engaged in muscle relaxation sessions.

Increased brain perfusion as a result of physical exercise has previously been shown in younger people. This finding shows that some older adults may retain this ability, and also links this increase in blood flow to improvements in memory performance. It is less exciting to see that the effect was limited to visual short-term memory, but perhaps further exercise might have more far-reaching effects.

http://www.eurekalert.org/pub_releases/2014-10/d-gc-sio101414.php

Cardiorespiratory fitness governs cerebrovascular health, not age

Another study has found that, among a group of older adults aged 55-85, blood flow in the gray matter was positively correlated with cardiorespiratory fitness and negatively correlated with age. That is, better cardiorespiratory fitness was linked to better blood flow in the brain, and both tended to decline with increasing age. Moreover, blood flow in the gray matter was entirely governed by cardiorespiratory fitness.

In other words, cerebrovascular health is largely a matter of your cardiorespiratory fitness, not your age.

http://www.frontiersin.org/Journal/abstract/86876

[3865] Hayes, S. M., Forman D. E., & Verfaellie M.
(2014).  Cardiorespiratory Fitness Is Associated With Cognitive Performance in Older But Not Younger Adults.
The Journals of Gerontology Series B: Psychological Sciences and Social Sciences.

[3854] Maass, A., Düzel S., Goerke M., Becke A., Sobieray U., Neumann K., et al.
(2014).  Vascular hippocampal plasticity after aerobic exercise in older adults.
Molecular Psychiatry.

[3866] Zimmerman, B., Sutton B. P., Low K. A., Fletcher M. A., Tan C. Hong, Schneider-Garces N., et al.
(2014).  Cardiorespiratory fitness mediates the effects of aging on cerebral blood flow.
Frontiers in Aging Neuroscience. 6,

Related News

Various forms of dementia, including Alzheimer's, involve brain network problems. Brain regions are not coordinating as well as they should;

Ten minutes of light exercise boosts memory

A randomized clinical trial involving 103 teenage athletes who sustained concussions while playing sports found that those who underwent a supervised, aerobic exercise program took significantly less time to recover compared to those who instead engaged in mild stretching.

A small study has found that a 12-week exercise program significantly improved cognition in both older adults with

A number of studies have found that physical exercise can help delay the onset of dementia, however the ability of exercise to slow the decline once dementia has set in is a more equivocal question. A large new study answers this question in the negative.

A Spanish study involving 101 overweight/obese children (aged 8-11) has found that aerobic capacity and motor ability is associated with a greater volume of gray matter in several cortical and subcortical brain regions.

A Finnish study involving over 1000 older adults suggests that a counselling program can prevent cognitive decline even among those with the Alzheimer’s gene.

A British study using data from 475,397 participants has shown that, on average, stronger people performed better across every test of brain functioning used.

A Finnish study involving 338 older adults (average age 66) has found that greater muscle strength is associated with better cognitive function.

A new MRI technique has revealed that it is the structural integrity of the

Pages

Subscribe to Latest newsSubscribe to Latest newsSubscribe to Latest health newsSubscribe to Latest news
Error | About memory

Error

The website encountered an unexpected error. Please try again later.