(Scientific American) Older adults who spend a lot of time sitting may be at increased risk of having a disability, regardless of how much they exercise, a new study suggests.

Researchers analyzed information from more than 2,200 adults ages 60 and older who wore a pedometer to track their movement for at least four days.

While they were awake, participants spent about nine hours a day sitting down. Every additional hour spent sitting was linked with a nearly 50-percent increase in the odds of having a disability, the study found. The researchers defined disability as having significant difficulty completing daily tasks, such as eating, bathing or getting out of bed and walking across a room.

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