喵哥新知 · 英语站This Hormone May Explain Why Exercise Helps the Brain
CEFR 等级: A1
英文原文 A1
Exercise is good for our body and brain. Scientists are studying why. They are looking at a hormone called irisin, which muscles make when we exercise. An Australian study watched older adults do strength training. They watched 24 adults over 65 during a 12-week strength training program. They measured irisin in their blood before, during, and after exercise. They also tested their memory and how quickly they could say words. After the first workout, the irisin levels went up a lot. But after 12 weeks, the levels didn't change. But the memory of the participants got better, and their words were faster at the end. This means that even a little bit of exercise can help our brain stay healthy.
📄 显示中文翻译
运动有益于我们的身体和大脑。科学家们正在研究其中的原因。他们关注一种名为irisin的激素，这是我们运动时肌肉产生的。一项澳大利亚的研究观察了老年人进行力量训练。
研究人员观察了24位65岁以上的成年人，在为期12周的力量训练项目中。他们在运动前后以及运动期间测量了他们血液中的irisin水平。他们还测试了他们的记忆力和说单词的速度。
第一次锻炼后，irisin水平显著上升。但经过12周后，水平并没有变化。然而，参与者的记忆力有所提高，到项目结束时，他们的单词反应速度更快。
这意味着即使是少量的运动也能帮助我们的大脑保持健康。
📚 词汇
| 词 | 词性 | 音标 | 英文释义 | 中文 | 例句 |
|---|---|---|---|---|---|
| Exercise | noun | /ˈɛksərsaɪz/ | Physical activity that maintains physical fitness and health. | 保持身体健壮和健康的活动。 | Regular exercise is important for maintaining a healthy lifestyle. |
| Scientists | noun | /ˈsaɪəntrɪst/ | People who study science. | 研究科学的人。 | Many scientists are working to find a cure for cancer. |
| Hormone | noun | /ˈhɔːrmoʊn/ | A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. | 由身体产生，控制并调节某些细胞或器官活动的化学物质。 | Insulin is a hormone that helps regulate blood sugar levels. |
| Muscles | noun | /ˈmʌslz/ | The tissues in the body that enable movement. | 使身体能够运动的组织。 | The muscles in your legs help you walk. |
| Strength | noun | /ˈstɚŋkθ/ | The quality of being strong. | 强壮的品质。 | The athlete developed great strength through years of training. |
💬 短语
| 短语 | 含义 | 例句 |
|---|---|---|
| Exercise is good for our body and brain. | 锻炼对我们的身体和大脑都有好处。 | Running in the park every morning is good for my body and brain. |
| Scientists are studying why. | 科学家们正在研究原因。 | Scientists are studying why some people are taller than others. |
| They are looking at a hormone called irisin. | 他们正在研究一种叫做irisin的激素。 | The researchers are looking at a hormone called serotonin. |
| They measured irisin in their blood. | 他们测量了他们血液中的irisin。 | The doctor measured my blood pressure and blood sugar. |
| The memory of the participants got better. | 参与者的记忆力变好了。 | With regular exercise, her memory got better. |
📝 语法点
Present Perfect Tense
现在完成时表示过去发生的动作对现在造成的影响或结果，通常与“already”、“just”等副词连用。
- Scientists are studying why.
- After the first workout, the irisin levels went up a lot.
Present Continuous Tense
现在进行时表示正在进行的动作或状态，通常与“now”、“at the moment”等时间状语连用。
- They are looking at a hormone called irisin...
- They measured irisin in their blood before, during, and after exercise.
Present Simple Tense
现在简单时表示经常性或习惯性的动作，或者客观事实。
- Exercise is good for our body and brain.
- This means that even a little bit of exercise can help our brain stay healthy.
Present Perfect Continuous Tense
现在完成进行时表示从过去某一时间开始一直持续到现在的动作，并可能继续进行。
- They measured irisin in their blood before, during, and after exercise.
Comparative and Superlative Adjectives
比较级和最高级形容词用来表示两个或多个事物之间的比较，比较级表示两者之间的比较，最高级表示三者或三者以上的比较。
- But after 12 weeks, the levels didn't change. But the memory of the participants got better, and their words were faster at the end.
🎯 测验 (5 题 · 选答案立即判对错)
1. What is 'irisin' in the context of the text?
2. How long did the Australian study observe the adults?
3. What was one of the outcomes of the 12-week strength training program?
4. Which of the following is an inference that can be made from the text?
5. What grammar structure is used in the sentence 'This means that even a little bit of exercise can help our brain stay healthy'?
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