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  3. Losing weight is hard enough. Keeping it off is even harder. Now a new study by researchers at Penn State suggests that the tech

Losing weight is hard enough. Keeping it off is even harder. Now a new study by researchers at Penn State suggests that the tech

admin2013-08-22  72
问题     Losing weight is hard enough. Keeping it off is even harder. Now a new study by researchers at Penn State suggests that the techniques that work for losing weight aren’t necessarily the same as those that help keep you slim.
    The survey conducted by the researchers found that people who lost weight successfully did so by participating in weight loss programs, cutting back on sugar and carbs(碳水化合物), eating healthy snacks(零食), not missing meals and participating in different types of exercise.
    Not all techniques that led to initial weight loss were associated with weight maintenance, however. Continually switching up an exercise program helped people lose weight, for instance, but those who kept weight off tended to stick with a consistent exercise program. That may be because experimenting with a variety of exercise routines may help people as they’re trying to lose weight, but once they’ve found what works for them, they tend to stick with it for maintenance.
    "It seems somewhat similar to love and marriage, " study author Dr.Christopher Sciamanna, a professor of medicine and public health sciences at Penn State College of Medicine said. "What gets you to the altar(神坛)is likely to be quite different from what keeps you married in the long-term. And not recognizing this change and adapting with different practices will also get you in trouble."
    Still, say many nutrition(营养)experts, the basic underlying principles of weight loss and maintenance are the same: you have to eat a healthy diet and increase your exercise. People who lose weight and keep it off tend to eat significantly healthier foods and do a lot more exercise than the average American.
    But what may shift between weight-loss and maintenance phases is a person’s mind：rather than focusing on actively losing weight in the short term, people have to start focusing on long-term, permanent lifestyle changes and behaviors, if they want to maintain the weight that’s been lost. The key to success, experts agree, is motivation, not necessarily the particulars of your weight-loss program.
What do nutrition experts say about weight loss and weight maintenance?
选项 A、Exercise is useful only for losing weight.
B、Weight loss itself means weight maintenance.
C、Special foods are needed for weight maintenance.
D、Their basic principles have something in common.
答案D
解析 根据题干关键词nutrition experts定位到第五段：Still，say many nutrition experts，the basic underlying principles of weight loss and maintenance are the same：you have to eat a healthy diet and increase your exercise．不少营养专家表示，减肥和保持的基本原则还是相同的；你必须健康饮食，同时增加体育运动。D)项是原文的同义转述，故为答案。
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