Couch-potatoes have short lives 久坐不动势必短命

更新时间 2012年 7月 26日, 星期四 - 格林尼治标准时间09:35

Vocabulary: physical activity 词汇:身体运动

Characters from a TV comedy about a family who spend all the time watching TV

Why do so many people prefer to watch TV rather than do exercise?

Lack of exercise could be causing as many deaths around the world as smoking, according to an article in the science magazine The Lancet.

As thousands of Olympic athletes prepare to push their bodies to the limit, most of us sit inactive for hours in front of a TV set.

But the scientists say they are not suggesting difficult gym sessions. As Pamela Das from The Lancet puts it: "It is not about running on a treadmill, whilst listening to your iPod."

The aim is to encourage everyone to think about fitness and build physical activity into their daily lives, such as brisk walking, gardening or any energetic pursuit.

Despite the familiarity of the message, one in three adults worldwide fails to do the recommended 150 minutes of moderate aerobic physical activity per week.

So, rather than stressing the health benefits of a good workout, The Lancet researchers have decided to show the harm caused by inactivity. They estimate lack of exercise is responsible for about 5.3m deaths a year: about the same number as smoking.

Sitting around doing nothing can lead to coronary heart disease, Type 2 diabetes, and breast and bowel cancers.

The data might lack muscle as scientists have had to rely on questionnaires sent out to 122 countries in which people report their own levels of activity. It must also be difficult to separate the impact of obesity from the figures.

But Dr I-Min Lee, from Harvard Medical School, says they were very cautious: "Our estimates of ill-health from lack of physical activity are on the low side."

The researchers say the problem of inactivity has reached pandemic levels, with far-reaching health and social consequences. They call for a radical re-think in how to deal with the issue.

Quiz 测验

1. According to the article, what are most people doing while Olympic athletes compete?

Sitting inactive in front of the TV.

2. What's the objective of this research?

To encourage people to be more active every day.

3. Is this true, false or not given? The researchers interviewed people from 122 countries.

False. The researchers had to send questionnaires to these countries.

4. What phrase in the article suggests that the results of the research aren't strong?

The data might lack muscle.

5. What phrasal verb means 'to depend on something or someone'?

To rely on (something or someone).

Glossary 词汇表 (点击单词收听发音)

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