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  3. If you sit all day at an office and worry about its effect on your weight

If you sit all day at an office and worry about its effect on your weight

游客2023-06-22  5
问题        If you sit all day at an office and worry about its effect on your weight and health, take a few breaks.
       That’s the advice from a new study that finds that people who sit for extended periods of time without taking short breaks are at higher risk for heart disease than those who take more frequent timeouts to stand up and walk around.
       The cardiovascular （心脏血管的） risk that stems from remaining sedentary for prolonged periods of time （at the office, for example） manifests itself in the form of larger waists, higher blood pressure, increased body inflammation and lower levels of "good" cholesterol （胆固醇）, the authors noted. What’s more, the negative impact of such lengthy bouts （一阵） of inactivity seems to apply even to those who routinely go to the gym.
       "These findings are not surprising," said Dr. Murray A. Mittleman, director of the cardiovascular epidemiology research unit at Beth Israel Deaconess Medical Center and an associate professor in the department of epidemiology at the Harvard School of Public Health in Boston.
       "In fact, the Surgeon General report recommends that individuals should accumulate activity incrementally throughout the day," noted Mittleman, who was not a member of the Australian research team. "And this is really consistent with that."
       The team, led by Genevieve N. Healy, of the Cancer Prevention Research Center in the School of Population Health at the University of Queensland in Herston, Australia, reported their findings in the Jan. 12 online edition of the European Heart Journal.
       "Even if you exercise for 30 to 60 minutes a day, what you do for the rest of the day may also be important for your cardiovascular health," Healy explained. "This research suggests that even small changes to a person’s activity levels （as little as standing up regularly） might help to lower cardiovascular risk. These changes can be readily incorporated into the person’s day-to-day life （including the work environment）. Stand up, move more, more often, could be used as a slogan to help get this message across." [br] What do we learn from the last paragraph?
选项 A、What people do for the rest of the day may be unimportant for their health.
B、People should exercise more often to lower cardiovascular risk.
C、Small changes to a person’s work environment might help to lower cardiovascular risk.
D、People should exercise for a long time every day to keep healthy.
答案 B
解析 推理判断题。定位段第二句指出，研究表明即使个人运动量的细微变化也有可能帮助降低患心血管疾病的风险。因此推出B）“人们应该经常锻炼以降低患心血管疾病的风险”为正确答案。
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