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Well now, just how little exercise do you think you need to do? Not very much, it would seem. 现在，你觉得自己需要多少运动量呢？看起来并不是很多。 Less than 10 minutes of brisk walking a day could counteract disability in older people leading to safer walking and less difficulty with daily activities such as bathing and dressing. 每天快走10分钟可缓解老年人的行动障碍，使他们走路更安全、更容易进行洗澡和穿衣等日常活动。 A new study shows just a little bit of fast-paced activity each day for those with osteoarthritis (OA) can keep them fit enough to cross the street safely. 一项新研究表明，对于骨关节炎患者而言，每天快走几分钟即可使他们保持健康，安全过马路。 The study looked at more than 1,500 adults from the National Osteoarthritis Initiative between 2008 and 2017. OA occurs when the cartilage becomes worn out. More than 8.75 million Brits suffer from it, mostly over 65, and it's a top cause of disability in senior citizens. 这项研究调查了2008至2017年参加国家骨关节炎计划的1500多名成年人。骨关节炎是由软骨退化损伤导致的。英国大约有875万名骨关节炎患者，大多数患者都年逾65，这也是老年人行动障碍的首要原因。 Around two in five people with OA will become disabled due to arthritis of the hips, knees, ankles and feet. It turns out, however, that it's easier for older adults to perform daily tasks with less than 10 minutes a day of moderate to vigorous activity - only about an hour in total each week. | 
