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(单词翻译:双击或拖选)
STEVE INSKEEP, HOST:
We know that exercise benefits health - kind of obvious. And we're learning more about that. Researchers find people who exercise regularly throughout their lifetimes may be able to keep their hearts and muscles decades younger. NPR's Patti Neighmond reports on the study published in the Journal of Applied1 Physiology2.
PATTI NEIGHMOND, BYLINE3: It started in the '70s - running, aerobics4 - an exercise boon5 that produced today's 70-somethings who've exercised most of their adult life like 74-year-old Susan Magrath, a retired6 nurse practitioner7 who started running as a young mother.
SUSAN MAGRATH: And have spent about 45 years running. I still run.
NEIGHMOND: It's addictive8, she says, because no matter how the day goes, she can always run and feel better.
MAGRATH: I ran today actually. There was little snowflakes coming down, and it was down by the river. And it's just wonderful. I think it's also become more of a contemplative meditative9 process for me.
NEIGHMOND: And it turns out an important boost for her physical health as well. Magrath was part of a study at Ball State University in Muncie, Indiana, headed by exercise physiologist10 Scott Trappe, who divided 70 people into three groups - those in their mid-70s who exercised on average for over 52 years, those in their mid-70s who didn't do structured exercise, and those in their mid-20s who did. Trappe compared the three groups with the goal of answering these questions.
SCOTT TRAPPE: One, what was their cardiovascular health? Number two, what was their skeletal muscle health?
NEIGHMOND: To measure cardiovascular health, all participants cycled on a stationary11 bike for increasingly challenging sessions and exhaled12 into a mouthpiece that measured oxygen levels, an indicator13 of cardiovascular strength.
TRAPPE: Lifelong exercisers did very well. Their cardiovascular system looked more like that of 40- to 45-year-olds.
NEIGHMOND: And when it came to muscles, the news was even better.
TRAPPE: Well, if I showed you the muscle data that we have, you wouldn't know that it was from an older individual.
NEIGHMOND: Because it looks more like the muscles of a 25-year-old. Trappe took pea-sized biopsies of muscles and examined capillaries14 that produce blood flow and a number of enzymes15.
TRAPPE: The capillaries and enzymes we're talking about were maintained relative to the young individuals. So it looks like full preservation16 with the lifelong exercise.
NEIGHMOND: So Trappe says if you want to maintain health in later years, exercise routinely. Walking 30 to 45 minutes most days of the week can be highly beneficial. Patti Neighmond, NPR News.
(SOUNDBITE OF KHURANGBIN'S "PEOPLE EVERYWHERE (STILL ALIVE)")
1 applied | |
adj.应用的;v.应用,适用 | |
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2 physiology | |
n.生理学,生理机能 | |
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3 byline | |
n.署名;v.署名 | |
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4 aerobics | |
n.健身操,健美操,韵律操 | |
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5 boon | |
n.恩赐,恩物,恩惠 | |
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6 retired | |
adj.隐退的,退休的,退役的 | |
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7 practitioner | |
n.实践者,从事者;(医生或律师等)开业者 | |
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8 addictive | |
adj.(吸毒等)使成瘾的,成为习惯的 | |
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9 meditative | |
adj.沉思的,冥想的 | |
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10 physiologist | |
n.生理学家 | |
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11 stationary | |
adj.固定的,静止不动的 | |
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12 exhaled | |
v.呼出,发散出( exhale的过去式和过去分词 );吐出(肺中的空气、烟等),呼气 | |
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13 indicator | |
n.指标;指示物,指示者;指示器 | |
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14 capillaries | |
毛细管,毛细血管( capillary的名词复数 ) | |
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15 enzymes | |
n. 酶,酵素 | |
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16 preservation | |
n.保护,维护,保存,保留,保持 | |
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