HINTS:

十以上數(shù)字、年份、百分率、金額等都用阿拉伯數(shù)字表示，數(shù)字采用千位逗號隔斷


None of the volunteers had a weekly exercise routine and all were considered to have low fitness levels, but were otherwise healthy. Each volunteer underwent five hours of tests to measure their blood pressure and the performance of their heart while at rest and while they exercised on a treadmill. The researchers found that the large arteries in the body became stiffer and less elastic with age, causing increased blood pressure. Blood flow to the muscles and skin of the limbs was also found progressively to decrease. These changes were found to occur earlier in men, but women caught up soon after the menopause.
這些志愿者中無人進行每周固定的體育鍛煉，健康狀況一般。每位志愿者都進行了5小時的測試，期間檢查他們在休息或在跑步機上時的血壓和心臟狀況。 研究者們發(fā)現(xiàn)人體內的大動脈血管隨著年齡增長而逐漸僵硬缺少彈性，從而導致血壓上升。人體肌肉和四肢皮膚的血液循環(huán)也日益減少。這些情況首先出現(xiàn)在男性身上，但女性在絕經后不久也會發(fā)生。