Cevnautas da Ginástica Laboral, vai aqui mais munição (do bem) para o nosso trabalho. Laércio
Ficar muito tempo sentado é pior do que a inatividade física. O estudo da Dra. Dorothy Dunlop foi publicado pela JPAH, divulgado pelo serviço NPR e publicado em português pelo portal Terra.
segue:
a) A nota do Portal Terra (por que será que os serviços brasileiros raramente oferecem links para quem deseja saber mais sobre a noticia?)
b) A divulgação do NPR com 9 links.
c) O resumo do artigo original da Journal of Physical Activity and Health que será publicado na biblioteca do CEV assim que algum cevnauta poliglota e altruista adotar - com crédito que vale pro Lattes - a tradução. Laércio
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Portal Terra. 20 de Fevereiro de 2014•20h36
Estudo associa hábito de ficar sentado à imobilidade
Este é o primeiro estudo a mostrar que o comportamento sedentário, por si só, é um fator de risco para a deficiência
Mantenha-se em movimento se você pretende evitar a invalidez na velhice, alertam os cientistas. Se você tem 60 anos ou mais, cada hora adicional que você gasta sentado está relacionada ao dobro de risco de se tornar deficiente, de acordo com um novo estudo. As informações são do site do jornal britânico Daily Mail.
Outra má notícia é que o exercício moderado não irá proteger você dos males trazidos pelos longos períodos que vier a passar sentado. Este é o primeiro estudo a mostrar que o comportamento sedentário, por si só, é um fator de risco para a deficiência, independentemente da falta de atividade física. Na verdade, a imobilidade é um fator de risco quase tão forte quanto a ausência de exercício moderado.
Se houver duas mulheres de 65 anos, uma sedentária por 12 horas ao dia, e outra por 13 horas, a segunda tem 50% mais chances de se tornar deficiente do que a primeira, mostra o estudo. Dorothy Dunlop, professora de medicina da Northwestern University Feinberg School of Medicine e autora do estudo, afirma que o sedentarismo não é somente sinônimo de atividade física inadequada. A deficiência, que afeta mais de 11 milhões de britânicos, aumenta com a idade. Apenas 6% são crianças, comparadas com 16% de adultos em idade ativa e 45% de aposentados.
Existem evidências crescentes que sugerem que passar muito tempo sentado pode representar um novo risco para morte prematura. “Isto significa que adultos mais velhos precisam reduzir a quantidade de tempo que permanecem sentados, seja em frente à TV ou ao computador, independentemente se fazem atividade física moderada ou vigorosa”, afirma a professora.
O estudo teve uma amostra de 2.286 adultos com 60 anos ou mais. Foram comparadas pessoas com saúde similar e a mesma quantidade de atividade física. Os participantes utilizaram acelerômetros para medir o tempo de sedentarismo. Estudos anteriores já relacionaram o sedentarismo à deficiência, mas, como haviam sido feitos com autorrelatos, não puderam ser verificados. Uma pesquisa apontou que pessoas que assistem TV seis horas por dia podem diminuir a sua expectativa de vida em até cinco anos.
FONTE: bit.ly/cev612014
b) Divulgação do NPR Science Desk
Sit More, And You're More Likely To Be Disabled After Age 60
by Linda Poon
February 19, 201412:46 PM
Sure, it's relaxing. But all those hours on the sofa may make it hard to actually stand up on your own.
Sure, it's relaxing. But all those hours on the sofa may make it hard to actually stand up on your own.
iStockphoto
The more you sit, the less physically active you are, which can lead to all sorts of health problems, including an early death.
But too much sitting increasingly looks like a health risk all its own. Researchers at Northwestern University say that for people 60 and older, each additional hour a day spent sitting increases the risk of becoming physically disabled by about 50 percent — no matter how much exercise they get.
Today, over 56 million Americans have some kind of disability, according to the latest . Nearly half of people 65 and older have a disability, which can include difficulty doing basic self-care tasks and difficulty leaving the home alone.
"It threatens people's independence, and it also accounts for a large chunk of health care dollars," says , a public health and medicine researcher who led the study. Every $1 in $4 spent on medical care is related to disability problems, she says.
This study uses data from the 2003-2005 , which recorded the health, socioeconomic status and access to medical care of 2,286 adults ages 60 and older. Also noted was how much difficulty they had with basic tasks like getting in and out of bed, eating and getting dressed.
Nearly 4 percent of the people said they had a lot of difficulty with at least one of those activities of daily living.
Most Americans spend the majority of their waking hours sitting still in front of a computer or television.
Participants also wore accelerometers around their waist for seven days to record how much time they spent sitting and how much time they spent doing moderate to vigorous activities like speed walking. The survey showed that on average, people spent nine of their 14 waking hours sitting, with almost two-thirds of the sample spending at least nine hours sitting.
People who spent more time sitting were more likely to become disabled when compared with people with similar health and exercise habits who sat less. Each daily hour spent sitting increased the odds of problems with activities of daily living by 46 percent. Doing more exercise didn't erase that risk.
So if sitting for 12 hours per day gives you a 6 percent risk of having a disability, an extra hour each day may up your likelihood by 3 percent, Dunlop told Shots.
The increase in risk from sitting was even greater among subgroups. For two women at the same age and with the same profile, the odds would increase by 60 percent for each extra hour a day of sitting.
The were published Wednesday in the Journal of Physical Activity & Health.
I'll be what I am, a sedentary man.
Dunlop calls the result a "smoking gun" but says it is not yet definitive. "This is only one slice in time and it doesn't allow us to say that being sedentary causes these poor health outcomes," she says. "But it is very strongly associated."
Even so, what sitting does do to your muscles and blood circulation isn't pretty, whether you're 60 or years younger.
"When a person sits for an extended period of time, your muscles burn less fat and your blood tends to flow more sluggishly," Dunlop says. "And on top of that, when you slump in your chair, then your back and your stomach muscle goes unused."
The key to maintaining your muscles' ability to do these basic, low-intensity task is keeping them working, says , an inactivity physiologist at Pennington Biomedical Research Center in Baton Rouge, La., who was not involved in the study.
"It takes a long duration of using your muscles throughout the whole day," Hamilton says. So exercising for 30 minutes a day doesn't necessarily offset the hours of sitting.
If you want to maintain mobility through life, Hamilton says, get your muscles focused on just that.
"Get nonfatiguing activity in as much as possible," he says.
That can be as simple as walking around the office, or parking your car at the far end of the parking lot or even just standing up while talking on the phone, Dunlop tells Shots.
And self-monitoring devices like pedometers and wristlets, both of which give you feedback about your activity, can be extra helpful in keeping you motivated to move.
FONTE com foto e 9 links: bit.ly/cev632014
3. Resumo do aceito pela Journal of Physical Activity and Health - JPAH
JPAH In Press
Sedentary Time in U.S. Older Adults Associated With Disability in Activities of Daily Living Independent of Physical Activity
Section: Original Research
Authors: Dorothy Dunlop, Jing Song, Emily Arnston, Pamela Semanik, Jungwha Lee, Rowland Chang, and Jennifer M. Hootman
Acceptance Date: November 12, 2013 DOI: http://dx.doi.org/10.1123/jpah.2013-0311
ABSTRACT
Background: The harmful relationship of sedentary behavior to health may reflect an exchange of sedentary activity for moderate-vigorous activity or sedentary behavior may be a separate risk factor. We examined whether time spent in sedentary behavior is related to disability in activities of daily living (ADL), independent of time spent in moderate-vigorous activity in older adults.
Methods: The nationally representative 2003-2005 National Health and Nutrition Examinations Surveys (NHANES) included 2286 adults aged 60 years and older with accelerometer-assessed physical activity. The association between ADL task disability and the daily percentage of sedentary time was evaluated by multiple logistic regression.
Results: This sample spent almost 9 hours/day being sedentary during waking hours and 3.6% reported ADL disability. The odds of ADL disability were 46% greater (odds ratio 1.46, 95% confidence interval: 1.07, 1.98) for each daily hour spent in sedentary behavior, adjusted for moderate-vigorous activity, socioeconomic, and health factors.
Conclusion: These U.S. national data show a strong relationship between greater time spent in sedentary behavior and the presence of ADL disability, independent of time spent in moderate or vigorous activity. These findings support programs encouraging older adults to decrease sedentary behavior regardless of their engagement in moderate or vigorous activity.
Key words: accelerometer, aging, sedentary behavior, activities of daily living
Fonte: http://journals.humankinetics.com/jpah-in-press/jpah-in-press/sedentary-time-in-us-older-adults-associated-with-disability-in-activities-of-daily-living-independent-of-physical-activity
Comentários
Por
Edison Yamazaki
em 22 de Fevereiro de 2014 às 11:36.
Lí essa matéria e achei tudo um pouco exagerado. Passar mais de seis horas sentado não é para qualquer um. Precisa ter muito tempo sobrando, não ter objetivo nenhum ou não ter mais pernas.
Acho que tudo precisa ser analisado com moderação e bom senso.
Para comentar, é necessário ser cadastrado no CEV fazer parte dessa comunidade.
