每天步行多少步能防止发胖？

How many daily steps can help keep weight off?

常速 | 五级（偏难） | 443词 | 2min59s

刘立军供稿

Part I. QUESTIONS

Listen to the passage and choose the best answer to each question you hear.

Q1. What daily step goal does the study suggest may help people maintain weight loss?

A. Around 6,000 steps each day.

B. Around 7,000 steps each day.

C. Around 8,500 steps each day.

D. Around 10,000 steps each day.

Q2. What kind of data did the researchers analyze in the study?

A. Medical records from several health institutions.

B. Data collected from eighteen earlier studies.

C. Survey responses from daily fitness users.

D. Interviews with doctors at obesity clinics.

Q3. According to the study, what did researchers discover about walking during weight loss programs?

A. It immediately improved participants’ overall health.

B. It replaced the need for diet changes.

C. It helped people lose weight much faster.

D. It showed limited effect on additional weight loss.

Q4. What can be inferred about the role of physical activity in weight management?

A. It works best when combined with medical treatment.

B. It is more helpful for keeping weight off long term.

C. It is mainly useful for people with severe obesity.

D. It is more effective than diet control at first.

Q5. What does Dr. Tara Narula mainly suggest about the study findings?

A. They should be considered a useful but preliminary result.

B. They should guide people to exercise exactly 8,500 steps.

C. They should replace traditional weight loss advice.

D. They should be applied to every adult immediately.

Part II. TRANSCRIPT

How many daily steps can help keep weight off?

(Q1) A new study suggests that increasing daily step counts may help people maintain weight loss in the long term, and a goal to shoot for may be around 8,500 steps a day.

(Q2) The research, published in the International Journal of Environmental Research and Public Health and presented last week at the European Obesity Conference, analyzed data from 18 previous studies looking at weight loss and physical activity.

(Q3) Researchers found that walking more was not strongly linked to losing additional weight during active weight loss programs. However, people who continued taking more steps each day were more likely to keep the weight off over time.

Over an average follow-up period of about 1.5 years, researchers found participants maintained roughly 1% of weight loss for every additional 1,000 steps they walked daily, with the average participant starting at about 7,400 steps per day at baseline.

The study noted that an average of 8,500 daily steps appeared to help participants maintain weight loss the longest, though researchers stressed that it is not a strict target or prescription for everyone.

prescription n. 处方；建议；规定

The increased activity happened as part of structured lifestyle programs that also included diet changes and behavioral counseling.

“This was a lifestyle modification program, and it really is a multifactorial approach when it comes to weight loss. So these individuals got diet and behavioral counseling in addition to really moving more. And so you really need all of that,” ABC News medical contributor Dr. Tara Narula said on “Good Morning America” Monday.

multifactorial adj. 多因素的；由多种因素造成的

(Q5) Narula noted that researchers described the findings as “hypothesis-generating” and said more research is needed.

“The researchers say, look, this is really hypothesis-generating; it should push us to do more research,” she explained. “It is not a prescription that everyone should go out and now do 8,500 steps. But it is helpful information.”

(Q4) Researchers concluded that calorie restriction was likely more impactful during the weight loss phase, while higher levels of physical activity were more closely tied to long-term weight loss maintenance.

The study also had several limitations. The analysis only included adults who were overweight or obese and relied on pooled population data, meaning the findings show correlation rather than direct cause and effect.

correlation n. 相互关系；关联

“Certainly if you’re planning to do a weight loss program, talk to your doctor about what is right for you in terms of your movement and goals overall,” Narula said. “And healthy habits build on each other. The more you lose weight, the more you want to exercise, and you feel better. But it really is helpful to know that just that little bit of increase might be all you need.”

Part III. KEY

Q1.C.【解析】细节题。题目出处为：“A new study suggests that increasing daily step counts may help people maintain weight loss in the long term, and a goal to shoot for may be around 8,500 steps a day.” 意为：“一项新的研究表明，增加每日步数或许有助于长期保持减重效果，建议将每日步数目标设置为每天8500步左右。”该句直接给出了研究所建议的步数目标，因此正确答案为C。

Q2.B.【解析】细节题。题目出处为：“The research, published in the International Journal of Environmental Research and Public Health and presented last week at the European Obesity Conference, analyzed data from 18 previous studies looking at weight loss and physical activity.” 意为：“这项研究发表在《国际环境研究与公共健康期刊》上，并于上周在欧洲肥胖大会上做了报告。研究分析了此前18项探讨减重和身体活动关系的相关数据。”该句明确说明研究的数据来源，因此正确答案为B。

Q3.D.【解析】细节题。题目出处为：“Researchers found that walking more was not strongly linked to losing additional weight during active weight loss programs.” 意为：“研究人员发现，在减重计划进行阶段，多走路与进一步减轻体重之间并没有很强的联系。”由此可知，在减重过程中增加步数并不会显著带来额外的减重效果，因此正确答案为D。

Q4.B.【解析】推理题。题目出处为：“Researchers concluded that calorie restriction was likely more impactful during the weight loss phase, while higher levels of physical activity were more closely tied to long-term weight loss maintenance.” 意为：“研究人员得出结论，在减重阶段限制热量摄入的作用可能更为显著，而更高强度的运动则与长期维持减重成果关系更为密切。”由此可以推断，运动对于维持长期减重更为有效，因此正确答案为B。

Q5.A.【解析】观点题。题目出处为：“Narula noted that researchers described the findings as ‘hypothesis generating’ and said more research is needed.” 意为：“纳鲁拉指出，研究人员将这些发现定性为‘生成假说’性质，并强调仍需要进一步研究。” 该句表明研究结果具有一定参考价值，但仍属于初步发现，需要进一步研究验证，因此正确答案为A。

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