Educação Física e Esporte

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     Demorou pra gente se acostumar a postar textos em estrangeiro no CEV. Ouvimos muitos professores universitários, ainda no tempo das listas de discussão - 1996-2008 -, dizendo que simplesmente apagavam as mensagens que não estavam em português. Com o tempo os tradutores automáticos foram melhorando. Acho que já estão bem razoáveis. Quem tiver bronca do texto estrangeiro pode usar o tradutor pra ler a nota da lista pioneira SportPsy. Sim, sei que tem gente que já utiliza o tradutor automático do navegador, mas, vai aqui: http://translate.google.com/?hl=pt-BR   Laercio

de:     MICHAEL L. SACHS
para:     SPORTPSY@listserv.temple.edu
data:     13 de novembro de 2013 10:33
assunto:     Fwd: Aerobic Exercise Improves Memory, Brain Function, & Physical Fitness; Reduces Aging's Biological & Cognitive Consequences

From: Ken Pope
Date: Wed, Nov 13, 2013 at 7:36 AM

The Center for Brain Health issued the following news release:

Study finds aerobic exercise improves memory, brain function and physical fitness

New brain imaging techniques allowed researchers to detect brain changes earlier

A new study conducted by researchers at the Center for BrainHealth at The University of Texas at Dallas published online in the open-access journal Frontiers in Aging Neuroscience found that engaging in a physical exercise regimen helps healthy aging adults improve their memory, brain health and physical fitness.

This finding is significant considering that among adults 50 and older, "staying mentally sharp" outranks social security and physical health as the top priority and concern in the United States.

"Science has shown that aging decreases mental efficiency and memory decline is the number one cognitive complaint of older adults," said Sandra Bond Chapman, Ph.D., founder and chief director of the Center for BrainHealth, Dee Wyly Distinguished University Chair and lead author of the paper.

"This research shows the tremendous benefit of aerobic exercise on a person's memory and demonstrates that aerobic exercise can reduce both the biological and cognitive consequences of aging."

For the study, sedentary adults ages 57-75 were randomized into a physical training or a wait-list control group.

The physical training group participated in supervised aerobic exercise on a stationary bike or treadmill for one hour, three times a week for 12 weeks.

Participants' cognition, resting cerebral blood flow, and cardiovascular fitness were assessed at three time points: before beginning the physical exercise regimen, mid-way through at 6 weeks, and post-training at 12 weeks.

"By measuring brain blood flow non-invasively using arterial spin labeling (ASL) MRI, we can now begin to detect brain changes much earlier than before," said Sina Aslan, Ph.D., founder and president of Advance MRI and collaborator on the study.

"One key region where we saw increase in brain blood flow was the anterior cingulate, indicating higher neuronal activity and metabolic rate.

The anterior cingulate has been linked to superior cognition in late life."

Exercisers who improved their memory performance also showed greater increase in brain blood flow to the hippocampus, the key brain region affected by Alzheimer's disease.

Chapman pointed out that, using noninvasive brain imaging techniques, brain changes were identified earlier than memory improvements, implicating brain blood flow as a promising and sensitive metric of brain health gains across treatment regimens.

"Physical exercise may be one of the most beneficial and cost-effective therapies widely available to everyone to elevate memory performance," says Dr. Chapman.

"These findings should motivate adults of all ages to start exercising aerobically."

Chapman cautioned that while physical exercise is associated with a selective or regional brain blood flow, it did not produce a change in global brain blood flow.

"In another recent study, we have shown that complex mental training increases whole brain blood flow as well as regional brain blood flow across key brain networks," Chapman said.

"The combination of physical and mental exercise may be the best health measures to improve overall cognitive brain health. We have just begun to test the upper boundaries of how we can enhance our brain's performance into late life. To think we can alter and improve the basic structure of the mature brain through aerobic exercise and complex thinking should inspire us to challenge our thinking and get moving at any age."

Ken Pope

EFFECTS OF EXERCISE ON COGNITION - 31 RECENT STUDIES:
http://bit.ly/KenPopeExerciseCognition

"I've missed more than 9000 shots in my career.  I've lost almost 300 games.  26 times, I've been trusted to take the game winning shot...and missed.  I've failed over and over and over again in my life.  And that is why I succeed."
--Michael Jordan

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