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医学
For three decades we’ve heard endlessly about the virtues of aerobic (increasing oxygen consumption) exercise. Medical authoriti
For three decades we’ve heard endlessly about the virtues of aerobic (increasing oxygen consumption) exercise. Medical authoriti
admin
2018-03-26
7
问题
For three decades we’ve heard endlessly about the virtues of aerobic (increasing oxygen consumption) exercise. Medical authorities have praised running and jumping as the key to good health, and millions of Americans have taken to the treadmill to reap the rewards. But the story is changing. Everyone from the American Heart Association to the surgeon general’s office has recently embraced strength training as a complement to aerobics. And as weight lifting has gone mainstream, so has the once obscure practice known as "Super Slow" training. Enthusiasts claim that by pumping iron at a snail’s pace — making each "rep" (repeat) last 14 seconds instead of the usual 7 — you can safely place extraordinary demands on your muscles, and call forth an extraordinary response. Slow lifting may not be the only exercise you need, as some advocates believe, but the benefits are often dramatic.
Almost anyone can handle this routine. The only requirements are complete focus and a tolerance for deep muscular burn. For each exercise — leg press, bench press, shoulder press and so on — you set the machine to provide only moderate resistance. But as you draw out each repeat, depriving yourself of impetus, the weight soon feels unbearable. Defying the impulse to stop, you kept going until you can’t complete a repeat. Then you sustain your vain effort for 10 more seconds while the weight sinks gradually toward its cradle. Intense? Uncomfortable? Totally. But once you embrace muscle failure as the goal of the workout, it can become almost pleasure.
The goal is not to burn calories while you’re exercising but to make your body burn them all the time. Running a few miles may make you sweat, but it expends only 100 calories per mile, and it doesn’t stimulate much bone or muscle development. Strength training doesn’t burn many calories, either. But when you push a muscle to failure, you set off a pour of physiological changes. As the muscle recovers over several days, it will thicken — and the new muscle tissue will demand sustenance. By the time you add three pounds of muscle, your body requires an extra 9, 000 calories a month just to break even. Hold your diet steady and, very quickly, you are vaporizing body fat.
One might have benefited from any strength-training program. But advocates insist the slow technique is safer and more effective than traditional methods.
While making each rep, one may suffer from______.
选项
A、impetus loss
B、weight loss
C、bearable iron weights
D、the feeling of successful workout
答案
A
解析
细节题。由题干中的信息词make each rep定位第二段第四句“但由于你每次重复动作时动量逐渐减少,重量很快就会显得无法承受”。由此可推知,慢速举重者可能会面临动量损失的情况,故选项A最符合题意。B文中未提;C与文中提到feel unbearable相反;D与文意相反。
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