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Women's Health

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Older Women May Spend Two-Thirds of Day Sitting

But, study also found they frequently get up and move about

WebMD News from HealthDay

By Serena Gordon

HealthDay Reporter

TUESDAY, Dec. 17, 2013 (HealthDay News) -- Older women are physically inactive for about two-thirds of their waking hours, according to new research. But that doesn't mean they're just sitting still.

Although women in the study appeared to be inactive for a good portion of the day, they frequently moved about in short bursts of activity, an average of nine times an hour.

"This is the first part of an ongoing study, and the first paper to look at the patterns of activity and sedentary behaviors," said lead author Eric Shiroma, a researcher at Brigham and Women's Hospital, in Boston.

"Some research says that sitting for long periods is harmful and the recommendation is that we should get up every 30 minutes, but there's little hard data available on how much we're sitting and how often we get up and how measures such as these affect our health risks," Shiroma explained.

Results of the study are published as a letter in the Dec. 18 issue of the Journal of the American Medical Association.

Previous studies have suggested that the more people sit each day, the greater their risk for chronic health problems, such as heart disease, diabetes and cancer.

The current study included more than 7,000 women whose average age was 71 years. For almost seven days, the women wore devices called accelerometers that measure movement. However, the device can't tell if someone is standing or sitting, only if they're still or moving. The women wore the devices during their waking hours, which averaged close to 15 hours a day.

A break in sedentary (inactive) behavior had to include at least one minute of movement, according to the study.

On average, the women were physically inactive for 65.5 percent of their day, or about 9.7 hours. The average number of sedentary periods during the day was 86, according to the study. Women moved an average of nine times an hour, even if only for a short burst of activity.

Older women and heavier women had longer bouts of sedentary behavior with fewer breaks in those inactive periods, the study reported.

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