题型:阅读选择 题类:模拟题 难易度:普通
浙江省台州市椒江区2019年初中英语毕业升学模拟考试卷
Ever wonder what would happen if you stopped doing exercise? A new study on identical twins published in Exercise Explores and the results are dramatic(显著的).
In this study, Finnish researchers looked at ten pairs of identical twin men. Each set of twins was in their mid-30s, and each had been brought up in the same household. Since they were twins, they shared the same DNA. The only difference was that though they had the same level of physical activity for most of their lives, one twin had stopped exercising in the past few years due to work or family pressure; on average the active twin exercised at least twice a week, while the less active twin exercised less than twice a week.
The research team put each twin through several medical tests to get a sense of their overall health.
The results showed . While the more active twins had lower body fat percentage(20.7versus 24) and better endurance(耐力)levels. The less active twins had about seven more pounds of body fat and worse endurance that showed signs of early metabolic disease. Not only were their bodies different, their brains were different as well. The athletic twin had more gray matter(the information processing part of their brain), particularly in areas that control balance and motor function.
The study was small, but the conclusion is clear: Stopping your daily fitness activities can trigger body and brain changes, and even lead to some serious diseases like diabetes, says Jordan Meltzl, M.D., sports medicine physician and author of The Exercise Cure.
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