In a study of the effects of exercise on longevity, medical researchers tracked 500 middle-aged men over a 20-year period.

在一项有关运动对长寿的影响的研究中，医疗研究人员在为期20年的时间中跟踪调查了500名中年男性。

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About a fifth of the participants had developed dementia by the end of the study, but the onset of memory decline appeared to vary based on the amount of mental exercise they had gotten.

到研究结束时，约有五分之一的老人患上了老年痴呆。不过锻炼大脑的频率却决定了记忆力减退的早晚。

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A study conducted by Arizona State University also recently found similar results when they studied the effects of aerobic exercise on overweight women.

近日，亚利桑那州立大学也进行了关于有氧运动对超重女性有何效果的研究，该研究结果与之相似。

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On a more positive note, the study team also revealed that exercise did make children nimbler, making them more likely to engage in sport in the future.

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The focus was on their exercise habits and eye health rather than being a scientific study of eye cells.

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In the study, participants had a one-on-one session, in which they discussed diet and exercise strategies, with a dietitian, and then were on their own.

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