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  3. Seated Exercise Series: Chair Aerobics When most people think of exercise, they usually think of things like running, jogging, j

Seated Exercise Series: Chair Aerobics When most people think of exercise, they usually think of things like running, jogging, j

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问题                     Seated Exercise Series: Chair Aerobics
When most people think of exercise, they usually think of things like running, jogging, jumping rope, lifting heavy weights, and so on. And all of these weight-bearing exercises involve the bones and muscles working against gravity. If you have problems standing for long periods of time, Chair Aerobics is the exercise for you.
Chair Aerobics lets you exercise your body while sitting in a chair. Consider the following:
    Chair aerobics is performed for about 20-30 minutes and consists of rhythmic movements.
    It is a low-impact exercise with almost no potential for damage to joints and enables you to perform your daily routine activities effectively.
    It lets you move your arms and legs to music while taking the weight off your feet.
    You don’t need special clothes, shoes, or space.
    No equipment other than a chair is required.
    Like any other physical exercise, it can improve your muscle tone, flexibility, and posture.
Chair Aerobics for Everyone is a great exercise video for men and women of all ages.
    Included in the training video: Upper Body Workout Lower Body Workout Abdominal Toning Cool-down
Newington Health & Wellness Co.
Newington Town Hall 131 Cedar St,
Newington, CT 06111
Phone: (860) 665-8500 / M-F 8:30 a.m.-4:30 p.m.
                          Total Health Magazine
                              Fall 2007
Which machine is your favorite?
People do not always burn the same number of calories on one exercise machine as on another.
A recent study was conducted on the number of calories expended by healthy men and women in their twenties while they exercised on four different machines. The intensity of their exercise was categorized as "fairly light" , "somewhat hard" , or "hard"  and showed the following results:
    Both men and women burned the most calories on the treadmill and the least on the stationary bicycles.
    The stair climber and the rowing machine were in the middle for both men and women.
Whatever the equipment is, that men burned more calories than women did is the physiological fact that pound for pound, men have more muscle than women, and muscles burn more calories than fat does. In addition, it takes more calories to move a larger person and men are usually bigger than women.
Be sure to consult a trainer before starting any of these exercise programs as they involve impact pressure, which is often associated with physical injury.
How is chair aerobics different from the exercise described in the article?
选项 A、It burns more calories.
B、It takes less time to learn.
C、It involves less risk of injury.
D、It improves posture.
答案C
解析 (第一篇文章+第二篇文章)本题需要结合两篇文章把握椅子健美操的特点。第二篇文章中提到的运动有treadmill(跑步机)、stationary bicycles(固定自行车)、stair climber(爬楼梯)、rowing machine(划船机)、这些运动的特点是impactpressure，which is often associated with physical injury(经常伴随有导致受伤的冲击压力)。但椅子健美操广告中宣传It is a low—impact exercise with almost no potential for damage to joints(椅子健美操为低冲击运动，不会造成关节损伤)，故(C)It involves less risk of injury．(它的受伤风险较小。)为正确答案。
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