怀玉公主

科技日报北京9月13日电 （实习记者张佳欣）近日发表在《美国医学会内科杂志》和《美国医学会神经病学》上的两项研究，监测了78500名使用可穿戴跟踪器的成年人，证实每天走1万步是实现最佳健康效果的理想步数。此外研究还发现，重要的不仅仅是走多少步，还有走多快。    The IRS deleted a job listing seeking “new special agents” who are “willing to use deadly force, if necessary” from their website, following a fierce backlash on social media Wednesday–only to reupload it within a day with the offending portion removed.,The IRS has removed the line "Carry a firearm and be willing to use deadly force, if necessary" from their IRS Criminal Investigation Special Agent listing following the fiasco yesterday.Archived here: https://t.co/vBy6lB841RActive link: https://t.co/uvwbrAkIit pic.twitter.com/vNmcSXuD7w— Ford Fischer (@FordFischer) August 11, 2022,Per the now-updated page on the IRS website, “IRS Special Agents are considered the premier financial investigators for the Federal government.”,“Special Agents are duly sworn law enforcement officers who are trained to ‘follow the money,’” the listing says, warning that “no matter what the source, all income earned, both legal and illegal, has the potential of becoming involved in crimes which fall within the investigative jurisdiction of the IRS Criminal Investigation.”,The posting sparked a wave of condemnation from ordinary citizens and influential politicians alike, including Sen. Ted Cruz (R-TX), who took to Twitter to express his opposition to the proposed new IRS jobs:,“HELL NO. Every Republican should pledge we WILL NOT FUND these 87k armed new IRS agents who will target the American people.”,HELL NO.Every Republican should pledge we WILL NOT FUND these 87k armed new IRS agents who will target the American people. https://t.co/BmKZVjVdNx— Ted Cruz (@tedcruz) August 10, 2022,Funding for the special agents in question is likely to be drawn from a huge budget boost the IRS anticipates, with Democrats in the House set to approve the so-called “Inflation Reduction Act.”,Along with around $430 billion the Biden administration says will address climate change and extend Affordable Care Act subsidies, the new spending bill promises to pump $80 billion into the IRS over the next ten years - more than doubling the size of the agency with over 87,000 new positions. According to the now-updated job listing, many of them will be armed; one of the “key requirements” is that applicants “be legally allowed to carry a firearm.”,The ad in question was first noticed by documentarian Ford Fischer, who pointed out in a subsequent post on Twitter that, by June, the criminal division of the IRS had spent more on ammunition in the previous three months than they typically spent in an entire year in the recent past.,Fischer told Sputnik News he finds it “fascinating” that “following the attention [he] brought to this job listing, the page went down for a while, and now with it back online, the ‘willingness to engage in deadly force' line has been removed.”,“The reality is that while perhaps finding some renewed relevance in today's news cycle about the IRS, this listing isn't particularly unusual,” Fischer notes. “The agency has been spending more than $600,000 annually on ammunition, which has been charted out for at least the past three administrations.”,“What's new is that while the left (to be clear, I mean real leftists - not Democrats) have been fairly adamant in their opposition to law enforcement at all levels, the Republicans seem to find opposition when the politics line up. For example, they currently are deeply critical of the FBI, and IRS.”,Opposition to the spending bill authorizing the IRS expansion has come almost entirely from the GOP. A recent analysis by House Republicans found that 60% of new audits expected to be unleashed by the doubling in IRS personnel will fall on those making $75,000 or less a year. But Democrats claim those making less than $400,000 will not be targeted by the new IRS agents.,The IRS reportedly did not respond to inquiries by Fox News or the National Review about its removal of the job posting.。这两项研究也是迄今最大规模的关于行走步数对健康影响的研究。研究发现，每天走1万步可以降低患痴呆症、心脏病、癌症和死亡的风险。

B | 然而，更快的步速表现出的好处超过了所达到的步数。研究论文合著者、悉尼大学查尔斯·珀金斯中心和医学与健康学院研究员马修·艾哈迈迪博士说：“这一研究的结论是，为了保护健康，人们不仅可以把每天走1万步作为理想目标，还可以走得更快些。”研究人员称，每走2000步到1万步，过早死亡的风险就会降低8%—11%。心血管疾病和癌症发病率也有类似的关联。每天走的步数越多，患全因痴呆症的风险就越低。每天走3800步，风险就降低了25%。

C | 9800步是降低50%痴呆症风险的最佳步数。研究还表明，步频强度或较快的步速显示出与所有结果（痴呆症、心脏病、癌症和死亡）的有益关联，超过了每天的总步数带来的益处。这些发现可能会为基于步速的体育运动指南提供参考，并有助于制定旨在预防慢性病的有效公共卫生计划。