Moderate physical activity — even an unhurried 30-minute stroll a day — may diminish the risk for vascular dementia among the elderly, according to a new study published this week in the online journal Neurology.

　　Researchers from the University Hospital S. Orsola-Malpighi in Bologna analyzed the exercise habits of 749 rural Italians over age 65 during a period of four years. At the beginning of the study, none had memory problems; by the last check up, 85 participants had developed some form of dementia — including Alzheimer's and vascular dementia, which is associated with decreased blood flow to the brain.

　　根据本周发表在《神经学》在线期刊上的一项新的研究报告，适度锻炼，即使是每天30分钟的缓慢散步，都可能降低老年人得脉管性痴呆症的风险。

　　来自博洛尼亚的圣-奥索拉-马勒比齐大学医院的研究人员在4年时间里分析了749名65岁以上、生活在农村的意大利人的运动习惯。在研究的开始阶段，没有人有记忆问题。但到最后一次检查时，85名参与者出现了某些形态的痴呆症，包括阿尔兹海默氏症和脉管性痴呆症。这些病症和大脑供血减少有关。