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Screen time leads to bigger waistlines

中國(guó)日?qǐng)?bào)網(wǎng) 2013-11-27 10:18

 

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Children and teenagers who spend lots of time in front of screens - especially TVs - tend to gain more weight as they age, according to a new study.

The findings are consistent with research suggesting all that idle sitting and exposure to advertisements may fuel poor eating habits.

Many parents believe their children are getting a reasonable amount of recreational screen time, says Mark Tremblay, director of Healthy Active Living and Obesity Research at the Children's Hospital of Eastern Ontario Research Institute in Ottawa, Canada, who was not involved in the new study.

"We don't pay attention to the fact that it's half an hour here, half an hour there, an hour here, an hour there," Tremblay says.

Researchers used data from a long-term study of children who took surveys every other year.

Children were between ages 9 and 16 when the study started.

Out of about 4,300 girls in the study, 17 percent were overweight or obese. Twenty-four percent of the 3,500 boys were also above a healthy weight.

From one survey to the next, each one-hour increase in children's daily TV watching was tied to an increase of about 0.1 points on a body mass index (BMI) scale, which measures weight in relation to height. That's a difference of approximately half a pound per extra hour of TV.

"The weight of the evidence is pretty strong that television viewing is related to unhealthy changes in weight among youth," says Jennifer Falbe, who led the study while at the Harvard School of Public Health in Boston. She is now at the University of California, Berkeley School of Public Health.

"It's important for parents to be aware of all the potentially obesogenic screens that they should really be limiting in their children's lives," Falbe says.

(中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津 Helen 編輯)

Screen time leads to bigger waistlines

About the broadcaster:

Screen time leads to bigger waistlines

Anne Ruisi is an editor at China Daily online with more than 30 years of experience as a newspaper editor and reporter. She has worked at newspapers in the U.S., including The Birmingham News in Alabama and City Newspaper of Rochester, N.Y.

 
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