Working out for 30 minutes every day “might not be enough” to fight against the health problems created by long time sitting, according to a sweeping new study.
The new study, unlike the past ones that examined sitting and formal exercise separately, paying little attention to light activities, involved 3702 people to find out how those all affected people’s health indices (指数).
With the data collected, researchers characterized people by how they moved. The first group dutifully exercised for a half-hour and then sat, almost nonstop, for more than 10 hours a day. Another group similarly worked out for 30 minutes and sat for long hours. But, in between, they rose often and took walks around, spending time in light activities like fetching another cup of coffee. The third group sat, without any stop, for up to 10 hours, but also collected an hour of exercise most days. The final group, which the researchers named “the movers,” exercised about an hour most days, while also moving lightly for about two hours more.
When the researchers cross-checked these groups against people’s current health data, the first group had the worst indices. Different from the first group, the other groups were all better off and to about the same extent, with relatively improved blood sugar control and cholesterol (胆固醇) levels and about 8 percent less body fat than the first group.
“A single 30-minute, daily workout ‘might not be enough’ to reduce the bad effects of long time sitting,” said Vahid Farrahi, the lead author of the new study. “In addition to a brisk (轻快的) workout, we need to move lightly and often, cleaning, taking the stairs, taking a walk in the halls or just not remaining still.”
32. What is the first paragraph mainly about?
A.The finding of a new study. |
B.Health problems caused by long sitting. |
C.The time of working out every day. |
D.Suggestions on how to work out. |
33. What do we learn from Paragraph 3 and 4?
A.The first group spent one hour on light activities after long sitting. |
B.The second group got similar improved health indices as the movers. |
C.The third group collected an hour’s exercise during 10 hours’ sitting. |
D.The movers got up every 30 minutes for formal exercise for four hours. |
34. What light activity is suggested to take in the last paragraph?
A.Reading while sitting. | B.Swimming in the pool. |
C.Working out in the gym. | D.Walking in the gym hall. |
35. What can we infer from Vahid’s words?
A.It’s better to exercise more often than half an hour every day. |
B.Moving lightly and often is more useful than we have thought. |
C.Working out harder and longer is better than just moving lightly. |
D.A 30-minute workout has little help for long time sitting problems. |