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题型:阅读理解-阅读单选 难度:0.65 引用次数:143 题号:18334354

Running has long been considered one of the most efficient, convenient, and beneficial workouts. But some claim you get more out of the classic way of exercising with a new technique—or rather a 180-degree about-face.

A study led by Dr. Gardner published in 2016 in the Journal of Strength and Conditioning backs this up. Researchers found that running backwards benefited athletes by improving their running economy; by running backwards over time the athletes became better runners overall.

Unlike forward running, which generally uses the muscles in the front of the leg, running backwards primarily uses the muscles of the bottom chain, especially the calf(腓)muscles and glutes. Dr. Gardner adds, “Within just a minute or two of running backwards, you’ll start to feel the burning in your calves!”

Frankie Ruiz, a longtime cross-country running coach and chief running officer explains that aside from moving in reverse, running backwards differs from regular running because it requires an entirely different combination of things to do correctly.

Running backwards may be easier on the knees. “In a backwards movement, the set of muscles involved in absorbing the impact in the lower level are opposite. Your lower leg muscles are doing most of the absorbing, thereby placing less stress on the knees. Running backwards will recruit lesser utilized muscles resulting in muscle growth and toning,” says Ruiz.

In addition to using different muscles than running forwards, running backwards enhances balance and posture, “as it forces you to stay in a more upright position,” Gardner says.

As to claims that running backwards can burn more calories than forward running, Gardner says it’s not so black and white. Lots of factors (including heart rate, age, and others) affect how many calories you burn during any particular activity. “Different muscle pattern usage doesn’t necessarily burn more calories. It is the intensity(强度)that matters most,” she points out.

Because running backwards causes more muscle activity than running forwards, however, Gardner notes it makes sense that one might burn more calories, but there’s not conclusive data on exact calorie consumption differences.

1. What is the benefit of running backwards?
A.It combines various muscles.
B.It can better athletes’ performance.
C.It frees the front muscles of the leg.
D.It gets calf muscles and glutes burned.
2. Why is Ruiz’s opinion on running backwards mentioned?
A.To state more of its advantages.
B.To share his personal preference.
C.To show its promising development.
D.To introduce detailed guidance on it.
3. What can we learn from the last two paragraphs?
A.Calories consumption is difficult to measure.
B.Using different muscles can burn more calories.
C.The amount of calories burning depends on many aspects.
D.Running backwards burns more calories than running forwards.
4. Who would benefit most from this passage?
A.Nutritionists pursuing a balanced diet.
B.Patients hoping to cure their injured knees.
C.Coaches intending to better their training methods.
D.Runners seeking to improve their economical situation.

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【推荐1】A study has found that a lifetime of regular exercise and activity can slow down the aging process (衰老过程). Researchers say that getting older should not necessarily mean becoming more weak or sick. Their research shows that a devotion to a life of movement and exercise may help us live not only longer, but also healthier.

For their study, the researchers looked at two groups. The first group was made up of 125 non-professional cyclists between the ages of 55 to 79. This group included 84 healthy men and 41 healthy women. We will call this group the “cyclists”.

Researchers then found 130 people to make up a second group. Within this group, 75 people were aged from 57 to 80. The other 55 were between the ages of 20 and 36. The people in this group were also healthy, but they did not exercise regularly. We will call this group the “non-exercisers”. Smokers, heavy drinkers of alcohol and people with other health issues were not included in the study.

Then, researchers gave both groups a series of tests. They tested their muscle mass (肌肉质量), muscular strength, percentage of body fat and the strength of their immune (免疫的) systems. Then the researchers compared the results of the two groups.

Results showed that the cyclists did not experience body changes usually regarded as a normal aging process. For example, they did not lose muscle mass or muscular strength. Also, their body fat did not increase with age.

The researchers also found something they had not expected. The study showed that the immune systems of the cyclists did not age either.

The researchers advise us all to find an exercise that we like in our lives.

1. How did the researchers carry out the study?
A.By comparing.B.By discussing.
C.By imagining.D.By reasoning.
2. Which of the following is a result of the research?
A.The cyclists kept a thin body shape.
B.The non-exercisers gained weight easily.
C.The cyclists’ muscles remained strong with age.
D.The non-exercisers usually had health problems.
3. Which is an unexpected result for the researchers?
A.The cyclists had normal aging process.
B.The cyclists’ immune systems didn’t age.
C.The cyclists lost nearly all their fat.
D.Everyone needed an exercise in their lives.
4. Which of the following can be the best title for the text?
A.Healthy People Need More Exercise
B.Take an Exercise, the Harder, the Better
C.Cycling Is the Best Way to Prevent Aging
D.A Lifetime of Exercise Slows Aging Process
2019-03-24更新 | 617次组卷
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【推荐2】Try This at Home!

Are you looking for a new pastime that will create a balance between physical activity and relaxation? Then yoga may be the perfect choice for you. Yoga can be practiced by people of all ages and levels of fitness.    1     It's a great way to strengthen your muscles and become more flexible.

In the 1930s, Indian Sri Tirumali and K. Pattabhi developed one of the most popular forms of yoga practised worldwide today. They worked together using an ancient Sansknt text called Yoga Korunta to create a set routine of yoga movements and breathing exercises.     2    

Ashtanga is different from other forms of yoga. It is a very powerful form of aerobic (有氧的)exercise which creates deep heat in the body.     3     In other forms of yoga, however, the routine can change each time and the stretching exercises aren't aerobic.

    4    As well as making you stronger and more flexible, it can also help you to stay calm. By focusing on your breathing while doing physical exercise, you are able to get a balance between mind and body. In addition, yoga helps to make us healthier so we are less likely to get common illnesses like colds.

Furthermore, yoga encourages you to think about what you're doing. Often you will close your eyes while doing certain movements.    5    After a few lessons you'll stop looking at what the others around you are doing. You will stop comparing yourself and start focusing on yourself.

A.It can also be done anywhere at any time.
B.The result of their co-operation was ashtanga yoga.
C.Whatever kind of yoga you choose, there are many long-term benefits.
D.This allows you to concentrate better and it makes you less competitive.
E.Every time someone practices ashtanga, he or she does exactly the same movements.
F.If you're interested in yoga, but can find a class near you, then it might be     an excuse to travel.
G.Recently, it has become extremely common for beginners as well as advanced yoga students to go on yoga holidays.
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文章大意:本文是篇说明文。运动员在高温下做剧烈运动很容易引起运动型中暑,严重时会危及生命,文中提供了正确的营救方法。

【推荐3】In 1985, 16-year-old Douglas Casa, ran the championship 10,000 meter track race at the Empire State Games. Suddenly, with just 200 meters to go, he collapsed, got back up and then collapsed again on the final straightaway, with his body temperature at dangerous levels. He had suffered an exertional heat stroke(运动型中暑). Fortunately, with immediate and proper treatment, he survived the potentially deadly stage.

Exertional heat stroke is caused by severe exercise in the heat, and is one of the top three killers of athletes and soldiers in training. When you exercise, nearly 80% of the energy you use is transformed into heat. In normal circumstances, your body can give off the heat as quickly as it’s generated through cooling methods like the evaporation(蒸发) of sweat. But with severe heat stress, your body is unable to lose enough heat due to too much exercise, which raises your corer temperature beyond normal levels. The cells no longer function properly and begin to leak their contents. If these leaky cells increase rapidly through the body, the results can be destructive.

So how do you judge an exertional heat stroke? The main criterion is a core body temperature greater than 40°C observed along with physical signs of central nervous system disorder such as very confusing behaviors or even loss of their sense of self.

As far as treatment goes, the most important thing to remember is cool first, transport second. It’s essential to start rapid cooling on site in order to lower it as quickly as possible. After any athletic or protective device has been removed from the victim, place them in an ice water container, cooling as much surface area as possible. But before you start anything. emergency services should be called.

The sun is known for giving life, but it can also take life away if we’re not careful. But although exertional heat stroke is one of the top three leading causes of death in sports, it has been 100% survivable with proper care.

1. What is the function of the first paragraph?
A.To tell a story.B.To present findings.
C.To put forward a theory.D.To lead to the main topic.
2. What will happen to over—exercise in extremely hot weather?
A.There will be minor physical and mental injury.
B.The heat in the body will be released with sweat.
C.Misfunctioning cells will damage the body seriously.
D.High body temperature will result in sweating more.
3. What is the first step to save a person suffering an exertional heal stroke?
A.Rush him to the hospital.
B.Call the emergency services.
C.Cool him down with cold water.
D.Take the equipment off the person.
4. Which of the following reflects the statement about the sun in the last paragraph?
A.Time tries all things.B.Every coin has two sides.
C.Never judge by appearances.D.Keep something for a rainy day.
2022-10-20更新 | 99次组卷
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