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Stand up: Your life could depend on it

Date:
March 27, 2012
Source:
Sax Institute
Summary:
Standing up more often may reduce your chances of dying within three years, even if you are already physically active, a study of more than 200,000 people shows.

Standing up more often may reduce your chances of dying within three years, even if you are already physically active, a study of more than 200,000 people published in Archives of Internal Medicine shows. The study found that adults who sat 11 or more hours per day had a 40% increased risk of dying in the next three years compared with those who sat for fewer than four hours a day. This was after taking into account their physical activity, weight and health status.

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"These results have important public health implications," said study lead author Dr Hidde van der Ploeg, a senior research fellow at the University of Sydney's School of Public Health. "That morning walk or trip to the gym is still necessary, but it's also important to avoid prolonged sitting. Our results suggest the time people spend sitting at home, work and in traffic should be reduced by standing or walking more."

The results are the first landmark findings to be published from the Sax Institute's 45 and Up Study, the largest ongoing study of healthy aging in the Southern Hemisphere. They showed physical activity is still beneficial: inactive people who sat the most had double the risk of dying within three years than the active people who sat least. And among the physically inactive group, those who sat the most had nearly one-third higher chance of dying than those who sat least.

The study's size and focus on total sitting time make it an important contributor to the growing evidence on the downsides of prolonged sitting. The average adult spends 90% of their leisure time sitting down and less than half of adults meet World Health Organization physical activity recommendations.

An accompanying editorial in the journal said the evidence was strong enough to support doctors prescribing "reduced daily sitting time" to their patients. The research was commissioned by the Cardiovascular Research Network and supported by the NSW Division of the National Heart Foundation Australia. It is one of more than 60 projects underway using data from the 45 and Up Study, Australia's richest information source about the health and lifestyles of people 45 and over.

Heart Foundation NSW CEO Tony Thirlwell said being inactive greatly increased a person's risk of heart disease, which is the number one killer of Australian men and women. "Watching TV, using computers and electronic games can involve sitting for long periods and have become a big part of leisure time," he said. "But we know that people who spend less time on these things have better health than those who spend too much time on them."

A major five-year follow-up of 45 and Up study participants has just begun and will ask 265,000 men and women more about their health, lifestyle, and the medications and health services they use. Such large-scale research will help governments face the challenges of an aging population.


Story Source:

The above story is based on materials provided by Sax Institute. Note: Materials may be edited for content and length.


Journal Reference:

  1. H. P. van der Ploeg, T. Chey, R. J. Korda, E. Banks, A. Bauman. Sitting Time and All-Cause Mortality Risk in 222 497 Australian Adults. Archives of Internal Medicine, 2012; 172 (6): 494 DOI: 10.1001/archinternmed.2011.2174

Cite This Page:

Sax Institute. "Stand up: Your life could depend on it." ScienceDaily. ScienceDaily, 27 March 2012. <www.sciencedaily.com/releases/2012/03/120327094611.htm>.
Sax Institute. (2012, March 27). Stand up: Your life could depend on it. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2012/03/120327094611.htm
Sax Institute. "Stand up: Your life could depend on it." ScienceDaily. www.sciencedaily.com/releases/2012/03/120327094611.htm (accessed December 20, 2014).

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