Workingat a desk all day may not be as bad for your health as sitting in front o-组卷网

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Working at a desk all day may not be as bad for your health as sitting in front of a television after work. That is a finding of a new study done in the United States. It also suggests that not all forms of sitting are equally bad.

Jeanette Garcia led the study. Garcia works as a researcher at the University of Central Florida in Orlando. "We've been hearing more and more about how sitting is the new smoking," she said. She added that other evidence suggests a relationship between health problems and time spent sitting. "However, it's been unclear whether all sitting is created equal, suggesting that as long as you reduce any type of sitting, then that's helpful in improving health," she added. "This study suggests that this may not be the case, and that we should focus more on leisure（休闲）time siting, mainly television viewing time, rather than sitting, in general.”

The study followed close to 3,600 African-American adults. Almost one-third of them watched television, or TV, for more than four hours a day. A little more than one-third of the subjects spent between two and four hours a day sitting in front of the TV. The remaining third watched TV for less than two hours a day. Researchers followed the group for an average of 8.4 years. During the study, 205 of the subjects died and 129 others suffered a heart attack or stroke.

Compared to people who watched less than two hours of television daily, those who spent more than four hours in front of the TV were 49 percent more likely to die or have a heart attack or stroke. But the undesirable health effects of TV appeared to be limited to adults who failed to get the recommended amount of weekly exercise. That is around 150 minutes of moderate（普通的）physical activity or 75 minutes of vigorous exercise every week.

Lin Yang is a researcher at the University of Calgary in Canada. She says it is possible that sitting in front of the TV might be worse than sitting at a desk because people snack while they are watching TV. Yang explained that “the evidence on TV viewing and health risks is strong," even if the exact biological causes are unclear.

【小题1】What does Garcia probably agree with?

A．Less sitting，better health.

B．All kinds of sitting create the equal effects.

C．We should focus more on time sitting.

D．Sitting is as harmful as the new smoking.

【小题2】What can you know about the participants in the study?

A．205 participants died of a heart attack or stroke.

B．3,600American-Afican adults were followed closely.

C．Participants were followed for an average of more than 8 years.

D．Over 1200 participants watched TV for more than 4 hours a day.

【小题3】Who were more likely affected by undesirable health effects of TV?

A．Those who watched less than two hours of television daily.