在经济快速增长的“亚洲虎”经济国家，走路速度增长最快。
The most dramatic increases were found in Asia among the fast-growing "tiger" economies.
以前认为，老年人走路速度快慢与心脏健康与否有关，例如跌倒或送进医院。
Walking speed has previously been linked to other health problems in older people, such as falls or being admitted to hospital.
匹兹堡大学医学中心的一项研究发现，超过65岁走路速度至少为每小时2.5英里的老人，比那些没有走路没这么快的人更长寿。
A University of Pittsburgh Medical Center researcher found that people over 65 who walk at a pace of at least 2.5 miles per hour live longer than those who don't.
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