研究发现每天走8500步或可防体重反弹
LearnAndRecord约 12 分钟🤔️小作业：
1. What is the primary purpose of the passage?
A. To argue that walking 8,500 steps daily guarantees permanent weight loss.
B. To report preliminary findings linking daily step counts to weight maintenance.
C. To criticize the methodology of the systematic review and meta-analysis.
D. To recommend replacing all sedentary activities with walking for health.
无注释原文：
Scientists Find a Daily Step Count Linked to Keeping Weight Off
From: Newsweek
Most people who lose weight struggle to keep it off long term, with weight regain common once dieting efforts ease and normal routines resume.
Researchers are still trying to understand what separates the small group who maintain weight loss from those who regain it—and a growing body of evidence suggests daily movement may be part of the answer.
A preliminary systematic review and meta-analysis of 14 trials suggests that walking around 8,500 steps a day is linked to maintaining weight loss after dieting.
The analysis, published in the International Journal of Environmental Research and Public Health, examined how daily step counts changed during both weight-loss and weight-maintenance phases of lifestyle-based obesity interventions.
Across the trials included in the review, participants averaged about 7,200 steps per day at baseline. During the weight-loss phase, daily step counts increased to roughly 8,400-8,500 steps, alongside an average weight loss of around 4 percent.
However, baseline activity levels did not reliably predict the amount of weight participants lost.
The key finding emerged later. During the weight-maintenance phase, participants who successfully kept weight off continued walking around 8,500 steps per day or more, while lower step counts were associated with weight regain.
Professor Marwan El Ghoch, of the Department of Biomedical, Metabolic and Neural Sciences, University of Modena, told Newsweek that aiming for around 8,500 steps a day is really about building more movement into your everyday routine—essentially adding small bursts of activity to things you're already doing.
"Some examples of how that target looks… through real-life constraints [are] parking at the back of the lot or getting off the bus one stop early, choosing the stairs over the elevator [and] if one is at a kid's soccer practice or dance class, walk the perimeter instead of sitting on the bench."
He also advised never to sit down when on the phone. "A 10-minute call can easily net you 800–1,000 steps just by pacing your office or living room," El Ghoch added.
The review's findings are preliminary and observational, based on pooled data from multiple trials with differing designs, and do not establish cause and effect. The analysis was peer‑reviewed and published in an open‑access journal, and the authors reported no conflicts of interest.
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注：完整题目见本文开头；中文文本为AI翻译，仅供参考
含注释全文：
Scientists Find a Daily Step Count Linked to Keeping Weight Off
From: Newsweek
Most people who lose weight struggle to keep it off long term, with weight regain common once dieting efforts ease and normal routines resume.
大多数减肥者都难以长期维持减重成果，一旦节食松懈、生活回归常态，体重反弹便屡见不鲜。
resume
résumé /ˈrez.ə.meɪ/ 表示“简历，履历”，英文解释为“a short written description of your education, qualifications, previous jobs, and sometimes also your personal interests, that you send to an employer when you are trying to get a job”
resume /rɪˈzjuːm/ 1）表示“（中断后）继续，重新开始”，英文解释为“If an activity resumes, or if you resume it, it starts again after a pause.”举个🌰：Normal services will be resumed in the spring. 春天将恢复正常服务。
2）表示“恢复；重新回到，重返（某地或某位置）”，英文解释为“If you resume a place or position that you have left for a period of time, you return to it.”如：to resume your post/job 重返工作岗位，举个🌰：Please resume your seats, as the performance will continue in two minutes. 请大家回到自己的座位上去，两分钟后演出继续。
📍《经济学人》（The Economist）一篇讲述疫情之下学生上课问题的文章中提到复课就用的resume classes：As well as letting final-year secondary-school students facing exams resume classes, Denmark has also begun to reopen crèches and primary schools. 丹麦除了让面临毕业考试的中学毕业班复课外，还开始逐步重开幼儿园和小学。
Researchers are still trying to understand what separates the small group who maintain weight loss from those who regain it—and a growing body of evidence suggests daily movement may be part of the answer.
研究人员仍在探究，为何少数人能成功维持减重，而多数人却会反弹——越来越多的证据表明，日常活动量或许是其中的关键因素。
A preliminary systematic review and meta-analysis of 14 trials suggests that walking around 8,500 steps a day is linked to maintaining weight loss after dieting.
一项涵盖14项试验的初步系统综述与荟萃分析表明，每天步行约8500步，与减肥后体重的长期维持密切相关。
preliminary
preliminary /prɪˈlɪm.ɪ.nər.i/ 表示“预备性的；初步的；开始的”，英文解释为“happening before a more important action or event”如：preliminary results / findings / enquiries 初步结果 / 发现 / 调查，举个🌰：After a few preliminary remarks he announced the winners. 说了几句开场白之后，他即宣布优胜者名单。
meta-analysis
A meta-analysis is a statistical analysis that combines the results of multiple scientific studies. Meta-analysis can be performed when there are multiple scientific studies addressing the same question, with each individual study reporting measurements that are expected to have some degree of error.（Wikipedia）
📍荟萃分析，又称“Meta分析”、“元分析”，是一种统计方法，它结合了多项独立的研究的结果，以得到一个整体的结论。通过这种方法，研究者可以更精确地估计某种因素或治疗的效果，因为它合并了大量的数据，从而增加了统计的效力。简单说，元分析就是“对研究进行的研究”。
trial
trial /traɪəl/ 可以作动词，也可以作名词，1）表示“审讯，审理，审判”，英文解释为“A trial is a formal meeting in a law court, at which a judge and jury listen to evidence and decide whether a person is guilty of a crime.”举个🌰：I have the right to a trial with a jury of my peers. 我有权要求由和我一样的平民组成的陪审团参加审判。
2）表示“（对能力、质量、性能等的）试验，试用”，英文解释为“the process of testing the ability, quality or performance of sb/sth, especially before you make a final decision about them”
区分：
📍trail作名词则表示“小路，小径”，如：a forest/mountain trail 林间/山间小道，以及“臭迹；踪迹；痕迹；蛛丝马迹，线索”等意思（the smell or series of marks left by a person, animal, or thing as it moves along；various pieces of information that together show where someone you are searching for has gone）举个🌰：The dogs are trained to follow the trail left by the fox. 这些狗经过特别的训练，能够追踪狐狸留下的气味。
The analysis, published in the International Journal of Environmental Research and Public Health, examined how daily step counts changed during both weight-loss and weight-maintenance phases of lifestyle-based obesity interventions.
这项发表于《国际环境研究与公共卫生杂志》的分析，考察了在以生活方式干预为基础的肥胖治疗中，参与者在减重阶段和体重维持阶段的每日步数变化。
obesity
obesity /oʊˈbiːsəti/ 表示“肥胖”，英文解释为“the fact of being extremely fat, in a way that is dangerous for health”
📍词根“obes-”来自拉丁语“obesus”，意味着“肥胖的”。近义词：overweight（超重），同根词：obese（肥胖的），常用短语：combat obesity（对抗肥胖症）
intervention
intervention /ˌɪn.təˈven.ʃən/ 表示“干涉，介入；（由家庭成员、朋友或医护人员共同开会劝导有酗酒或毒瘾问题者接受现实并开始治疗的）干预活动”，英文解释为“Intervention is the act of intervening in a situation. A meeting at which someone with a drug or alcohol problem is asked by family members, friends, or health workers to accept the fact that they have a problem and is encouraged to get treatment”
Across the trials included in the review, participants averaged about 7,200 steps per day at baseline. During the weight-loss phase, daily step counts increased to roughly 8,400-8,500 steps, alongside an average weight loss of around 4 percent.
在综述纳入的各项试验中，参与者在起始阶段平均每天步行约7200步。到了减重阶段，每日步数增加至大约8400至8500步，同时平均体重下降了约4%左右。
baseline
baseline /ˈbeɪs.laɪn/ 1）表示“（网球场等的）底线”，英文解释为“a line on a sports field, such as the one in tennis, that marks the end of the playing area, or the one in baseball that marks the path along which players run”举个🌰：She delivered a final serve from the baseline to win the match. 她从底线发出了致胜的一球。
2）表示“（进行比较时用作起点的）基线”，英文解释为“an imaginary line used as a starting point for making comparisons”如：a baseline assessment 基线评估；摸底评估。
However, baseline activity levels did not reliably predict the amount of weight participants lost.
然而，基准活动水平并不能有效地预测参与者减重的具体数值。
reliably
reliably /rɪˈlaɪ.ə.bli/ 表示“可信赖地；可靠地；真实可信地”，英文解释为“in a way that can be trusted or believed”举个🌰：I am reliably informed that you have been talking about resigning from the company. 我收到可靠的消息说你一直说要从公司辞职。
The key finding emerged later. During the weight-maintenance phase, participants who successfully kept weight off continued walking around 8,500 steps per day or more, while lower step counts were associated with weight regain.
关键发现随后浮现。在体重维持阶段，成功守住减重成果的参与者继续每天步行约8500步或更多，而步数减少则与体重反弹相关。
Professor Marwan El Ghoch, of the Department of Biomedical, Metabolic and Neural Sciences, University of Modena, told Newsweek that aiming for around 8,500 steps a day is really about building more movement into your everyday routine—essentially adding small bursts of activity to things you're already doing.
摩德纳大学生物医学、代谢与神经科学系的马尔万·埃尔·戈赫（Marwan El Ghoch,）教授告诉《新闻周刊》（Newsweek），每天走约8500步的目标，本质上是在日常生活中融入更多活动——在你已有的生活节奏里，见缝插针地加入短时间的运动。
metabolic
metabolic /ˌmɛtəˈbɒlɪk/ 表示“新陈代谢的”，英文解释为“Metabolic means relating to a person's or animal's metabolism.”举个🌰：People who have inherited a low metabolic rate will gain weight. 因遗传而新陈代谢速度慢的人会发胖。
"Some examples of how that target looks… through real-life constraints [are] parking at the back of the lot or getting off the bus one stop early, choosing the stairs over the elevator [and] if one is at a kid's soccer practice or dance class, walk the perimeter instead of sitting on the bench."
“在现实生活中，实现这个目标的方法有很多，”他举例说，“比如把车停在停车场最远的位置，或者提前一站下公交车；选择走楼梯而不是坐电梯；如果孩子在练足球或上舞蹈课，就在场地周围走动，而不是坐在长椅上。”
constraint
constraint /kənˈstreɪnt/ 表示“限制；束缚；约束”，英文解释为“something that controls what you do by keeping you within particular limits”举个🌰：The constraints of politeness wouldn't allow her to say what she really thought about his cooking. 出于礼貌，她不会说出自己对他的厨艺的真实看法。
perimeter
perimeter /pəˈrɪm.ɪ.tər/ 1）表示“周边，边缘”，英文解释为“the outer edge of an area of land or the border around it”举个🌰：A river runs along one side of the field's perimeter. 一条河沿这片田地的一侧流过。
2）表示“周，周长”，英文解释为“the length of the outer edge of a shape”
He also advised never to sit down when on the phone. "A 10-minute call can easily net you 800–1,000 steps just by pacing your office or living room," El Ghoch added.
他还建议，接打电话时千万不要坐下。“一个10分钟的电话，只要你在办公室或客厅里来回踱步，就能轻松增加800到1000步，”埃尔·戈赫补充道。
pace
pace /peɪs/ 表示“（通常因焦虑或担忧而）来回踱步，走来走去”，英文解释为“to walk with regular steps in one direction and then back again, usually because you are worried or nervous”举个🌰：He paced the room nervously. 他紧张地在房间里来回踱步。
The review's findings are preliminary and observational, based on pooled data from multiple trials with differing designs, and do not establish cause and effect. The analysis was peer‑reviewed and published in an open‑access journal, and the authors reported no conflicts of interest.
需要指出的是，这项综述的结论是初步的、基于观察的，它汇总了多个不同设计的试验数据，因此并不能确立因果关系。该研究经过了同行评议，发表在一本开放获取期刊上，作者声明不存在利益冲突。
cause and effect
cause-and-effect表示“因果关系”，指的是一件事（原因）导致另一件事（结果）发生的逻辑联系。
peer‑review
表示“同行评审，同行评议”，英文解释为“the evaluation by fellow specialists of research that someone has done in order to assess its suitability for publication or further development”
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