Royce Shook

6 years ago · 2 min. reading time · 0 ·

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How long do you sit for in a day?

How long do you sit for in a day?

A typical day for many people includes at least 8 hours of sitting - driving to work, sitting in an office, driving home, and watching TV. An international study of over 1 million people shows that 1 hour of moderate physical activity can eliminate the health risks associated with sedentary behavior. Previous research has shown that older adults spend more than 9 hours of their day sitting down.

High levels of sedentary behavior may increase the risk of death for frail adults aged 50 and older who have low levels of physical activity, a new study suggests.

The World Health Organization (WHO) and the Physical Activity Guidelines for Americans state that adults aged 18 to 64 and those aged 65 and older should aim to get at least 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity aerobic physical activity every week.

For adults who are unable to meet these guidelines, it is recommended that "they should be as physically active as their abilities and conditions allow."

According to statistics from the 2016 National Health Interview Survey, just 44.9 percent of older adults aged 65 to 74 met the physical activity guidelines last year.

The harms of sedentary behavior have been well documented. A study reported by Medical News Today last year, for example, suggested that sitting for more than 3 hours daily is responsible for more than 430,000 deaths across 54 countries every year.

The researchers set out to determine whether or not frailty plays a role in the increased death risk associated with sedentary behavior. The results were recently reported in the Canadian Medical Association Journal.

The study included the data of 3,141 adults aged 50 and older who participated in the 2003-2004 and 2005-2006 United States National Health and Nutrition Examination Survey.

As part of the survey, subjects were required to wear activity trackers during waking hours, and the researchers used these data to calculate how much time each adult spent sedentary.

The team also used a 46-item index to assess the frailty of each subject. Frailty is generally defined as an aging-related process characterized by weakness, unintended weight loss, slowness, and fatigue.

Just 1 hour of exercise offsets health risks of prolonged sitting. Researchers suggest that just 1 hour of exercise may counteract the health risks of prolonged sitting.

Among adults who scored highly on the frailty index and did not meet the physical activity guidelines, the researchers found that prolonged sitting was associated with an increased risk of death. This was not the case for adults with low frailty who met exercise guidelines.

"Thus, among people who are inactive and vulnerable or frail, sitting time increases mortality risk, but among those who are non-frail or active, sitting time does not affect the risk of mortality," say the researchers.

There were some limitations to their study. For example, the team had limited activity data on adults with higher frailty levels.

"Our sample size was substantially reduced, especially among the group with the highest level of frailty, which made it necessary to merge frailty groups for some analyses and prevented us from isolating those with severe frailty into one category," the researchers explain.

Still, the authors say that their study further highlights the harms of sedentary behavior, particularly for frail adults.

"Physicians should stress the harms of inactivity with patients, similar to the harms of smoking, to encourage movement. Even something as simple as getting up and walking around the house with a walker or cane can benefit frailer people."

The above was from a report Prolonged sitting and frailty a deadly combination Published in August 2017 and written by Honor Whiteman 



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Comments

Royce Shook

6 years ago #2

#2
Chas, thanks for the link I use a ball from time to time when I find I am sitting in a chair too long. It works. Yes, I would think typing counts as exercise.

Zacharias 🐝 Voulgaris

6 years ago #1

Does typing count as exercise? :-) I have to find a way to engage with other bees on beBee while standing up...

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