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(1) We know the physical benefits exercise has on our bodies, but the wonders it can do for your brain aren’t limited either. "I
(1) We know the physical benefits exercise has on our bodies, but the wonders it can do for your brain aren’t limited either. "I
admin
2023-01-09
59
问题
(1) We know the physical benefits exercise has on our bodies, but the wonders it can do for your brain aren’t limited either. "If exercise were a pill, it would be one of the most cost-effective drugs ever invented," says Dr. Nick Cavill, a health promotion consultant. Aside from its ability to perhaps halve your risk of major illnesses such as heart disease and cancer, exercise also extends benefits to the mind, improving mental health and wellbeing.
(2) In the early 80s, exercise was shown to increase endorphin (内啡肽) levels in the blood. Through triggering a positive feeling, these brain chemicals play a part in the brain-boosting effects of exercise, but the complete story is more complicated and still far from understood. Scientists at the Cochrane Library have asked whether a daily dose of exercise might help everything from schizophrenia (精神分裂症) to sleep disorders, tobacco addiction to anxiety, and have offered explanations as to how it might bring about its benefits. Here’s what they (and others) have found.
(3) " Individuals with schizophrenia can improve components of mental health by participating in regular exercise," write the authors of a review into exercise therapy for schizophrenia. Whether it’s regular walking or specific strength training, it’s thought that, aside from endorphin release, exercise might help by increasing social support and sense of autonomy, improving perceptions of competence, enhancing body image and by providing distraction. Definitive conclusions cannot yet be drawn though; more research is needed. The review included only 96 participants, with more men than women.
(4) Mice are commonly used in medical research (but are not always the best fit since what works or doesn’t work in mice does not necessarily translate to humans). In one study in the British Journal of Pharmacology, nicotine-treated, wheel-running mice displayed fewer signs of withdrawal (such as tremor) when compared with a sedentary group.
(5) Exercise also seems to help people quit smoking, by reducing cravings and helping to manage weight gain. It’s hard though to prove this with science, with results from more than 20 clinical trials finding no evidence that adding exercise to smoking cessation programs improves abstinence. An absence of scientific evidence is though just that, and it does not prove absence of effect. Real-life success stories abound.
(6) Focusing especially on older people (since insomnia increases with age), one small study showed that people slept for about 42 minutes longer, and fell asleep about 11 minutes more quickly, when they had participated in a 16-week exercise program, consisting mainly of walking and low impact aerobics. Hard work, it seems, can pay off.
(7) When scientists gathered data from more than 2,000 people in 39 small clinical trials, they found exercise perhaps to be as effective as drugs or talking therapy in reducing depression. Whilst awaiting results of larger, more robust studies they wonder whether the effects seen are down to elevation of brain chemicals or enhancement of self-image when mastering a new skill. Increased social contact and distraction can also help. In one case study, cold water swimming helped one woman with depression become medication-free. It is though important to realize that exercise alone is not enough to treat someone with severe depression.
(8) "Whether wine is a food, a medicine or a poison depends on the dosage," stated Paracelsus, a philosopher in the 16th century, and the same is true for exercise. Writing in the British Journal of Pharmacology, Professor Jose Vina from the University of Valencia says that " dosing is extremely important to get the beneficial effects of exercise. In moderate doses, it causes very pronounced relaxing effects, but some may even become addicted to exercise".
(9) In mild to moderate chronic fatigue syndrome, an individualized, person-centered program of exercise is needed; unsupervised or unstructured exercise may worsen symptoms. The National Institute for Health and Care Excellence is to publish new guidelines on this, stressing that different combinations of approaches are helpful for different people.
What’s the author’s attitude to the part that exercise plays in helping people quit smoking?
选项
A、Positive.
B、Negative.
C、Skeptical.
D、Neutral.
答案
A
解析
态度题。由题干定位至原文第五段。第五段解释了锻炼对帮助人们戒烟所起的作用。原文提到,虽然研究并没有发现锻炼与帮助戒烟之间的关系,但是这并不能说明锻炼对戒烟没有效果。本段最后一句话指出,现实生活中的成功案例比比皆是。由此可以看出,作者认为锻炼是有助于人们戒烟的,因此本题答案为A“积极的”。B“消极的”、C“怀疑的”和D“中立的”均不符合原文意思,因此排除。
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0
专业英语四级
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