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Study Suggests Sitting
Less Can Extend Life
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• By Rebecca Widiss
VOAnews.com
hat's the best seat in the house? It may be whichever one you use the least.
New research suggests that cutting daily sitting time to less than three hours
might extend your life by two years.
W
Humans were designed to move. But modern lifestyles and office jobs rarely prom
us to roam around. Quite the opposite, says Peter Katzmarzyk, an epidemiologist at the
University of Louisiana.
"Sitting is ubiquitous in our lives today. You know, we sit while we're eating, we sit
in the car, we sit while we watch TV. And many of us sit for many hours at work. So on
average, Americans report they sit between four and a half to five hours a day," Katzma
said.
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And, as he says, those chair-centered days matter to our health, just like exercise
"We can't throw away physical activity. It's extremely important. We have 60 years
of research showing us that. But sedentary behavior is also important. . . . If you exercis
for 30 minutes a day. What goes on in the other 23 and a half hours a day is also very
important," Katzmarzyk said.
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Katzmarzyk and his colleagues are part of a new generation of researchers trying
discover how sitting all day affects our lifespans.
"This is a relatively new area of study. . . . Studies that have assessed the relations
between sitting and mortality or television viewing and mortality are very rare. There's of
been a few of them, actually five or six now, in the last four or five years," said Katzman
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Karzmarzyk and his colleagues pooled data from these
studies, which involved almost 167,000 adults. Then they turned to a
government-run survey of Americans to find out exactly how much time
people spend sitting and watching TV.
Not only did the team find that US citizens could live longer by
sitting less, they found that cutting TV time to less than two hours a day
could add an extra 1.4 years to their lives.
People who've spent half their waking lives sitting down might well
ask, "Is it ever too late to make a change?"
"That's a good question. Physical activity data would say 'No. It's
never too late.' Physical activity is good for you at every age. We don't
know that yet about sitting. But one might assume it to be similar,"
Katzmarzyk said.
Change is already afoot in some offices, especially when it comes
to desk designs.
"That's one of the strategies that many companies are using now.
They may have got five standing desks for their employees or a treadmill
desk. I've heard of other companies where they may not have a desk
for every person. But they'll have a bank of these desks where people
can go for an hour a day and answer their emails or talk on the phone,"
Katzmarzyk said.
Katzmarzyk says simply studying this problem has inspired his
team to make a few changes in their own lives.
"As a university professor, you know, it is a very sedentary
occupation. We're chained to a desk in terms of writing papers
and doing research. We really try to limit the amount of time
we spend doing that," said Katzmarzyk.
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Reading Comprehension
A Mark each statement as true (T), false (F), or inferred (1) according to the passage
1. Humans are designed to sit all day long.
2. Katzmarzyk was researching the relationship between sitting and the
human lifespan.
3. Some offices have desks without chairs for their employees.
4. US citizens can gain two years of their life by sitting longer daily.
5. Katzmarzyk is a university professor.
T
EEE
Choc
T F 1. Si
F
T F
T
T
FFFF
B Choose the best answer.
1. According to this passage, all of the following are true EXCEPT
(A) Sitting less can help you live longer than if you spend a lot of time sitting daily.
(B) Katzmarzyk never makes changes in his own life based on his research findings.
(C) Exercising regularly is an important part of a healthy lifestyle.
(D) Research has made employers more aware of their employees' health.
2. What is the main purpose of Katzmarzyk's research?
(A) To decide if it is too late to change to exercise daily
(B) To get data on how long US citizens watch TV daily
(C) To discover the effect of sitting all day on mortality rates
(D) To determine what kinds of physical activities people should do on a daily basis
Voca
3. Why do some offices have standing desks and treadmill desks?
(A) Because research has shown that working while standing improves performance
(B) Because standing desks are cheaper and take up less office space
(C) Because Katzmarzyk inspired the employers
(D) Because research shows that sitting less daily is healthier for humans
(E
2. H
3.
F

Answer 1

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