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。    (ECNS) -- China’s Consumer Price Index (CPI) rose 0.5% year on year in July, down 0.5 percentage points from June, the National Bureau of Statistics said Sunday.    Gasoline prices went up 1.0% year-on-year in July, a 16 percentage-point drop in growth from June. Its contribution to CPI growth fell by roughly 0.45 percentage points. Energy prices edged up 0.6%. Prices of industrial consumer goods increased 1.5% year-on-year, slipping 0.2 percentage points from the prior month.    Service prices increased 0.7% year on year, led by domestic services, catering and education, which rose 1.3%, 1% and 0.6% respectively. Food prices fell 1.5%, narrowing the decline slightly.        On a monthly basis, CPI dropped 0.1% in July, with gasoline down 10.7% and food prices below seasonal levels. Service prices rose 0.4%. Prices of tablet computers, computers and mobile phones jumped 11.3%, 5.5% and 1% respectively.    China’s core CPI, excluding food and energy prices, registered a 0.9% year-on-year increase and a 0.3% month-on-month rise in July. The sustained moderate growth of core CPI indicates that China’s consumption structure is shifting from food and energy driven growth toward services and experiences.    (By Helen Mo, intern Xu Wenda)                    。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。然而，更快的步速表现出的好处超过了所达到的步数。

二 | 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%。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。

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