"Predicted years of remaining life for each sex and age increased as gait speed increased, with a gait speed of about 0.8 meters [2.6 feet]/second at the median [midpoint] life expectancy at most ages for both sexes. Gait speeds of 1.0 meter [3.3 feet]/second or higher consistently demonstrated survival that was longer than expected by age and sex alone. In this older adult population the relationship of gait speed with remaining years of life was consistent across age groups, but the absolute number of expected remaining years of life was larger at younger ages," the authors write.

在大多数年龄段中，寿命为预期寿命中值的老年人，其步速约为0.8米/秒，男女皆是如此;而在性别与年龄一致的前提下，步行速度越快，其预期寿命越长。步速达1米/秒以上的老年人，其预期寿命会比只考虑年龄与性别时的预期要长。在多个年龄组别中，老年人的步速与剩余寿命均成正比关系，而且年纪越小，其预期剩余寿命的绝对值越大。

The authors suggest there are several reasons why gait speed may predict survival. "Walking requires energy, movement control, and support and places demands on multiple organ systems, including the heart, lungs, circulatory, nervous, and musculoskeletal systems. Slowing gait may reflect both damaged systems and a high energy cost of walking."

为什么步速能预测寿命呢?这是由于步行需要耗费身体能量并对肢体动作进行有效的控制，同时还需要包括心肺系统、循环系统、神经系统以及肌肉骨骼系统在内的多个器官系统的支持与配合。步行速度慢一方面反映出老人的身体系统已经受损，另一方面也表明他/她步行时需要耗费较多的能量，所以步速能对老人的寿命起到预示的作用。

【步行速度越快的人寿命越长?】相关文章：

★ 生活像杯中的咖啡

★ 只言片语谈恋爱

★ 爱的颂歌

★ Broken Wings,Flying Heart

★ 爱，催人奋进的力量

★ 26个英文字母蕴含的人生哲理

★ 美国人的肢体语言

★ How Small People Make A Big Difference

★ 飘忽的云

★ 飞翔的梦想与现实