Modern World 12
1 Next time you’re on a bus or train, holding on to a pole to avoid a fall, angry that another commuter has taken the last seat, consider the fact that standing up could help you live longer.
2 Not only do we need to get more exercise, but we also need to spend less of our time sitting down, Australian researchers say. Their study of more than 220,000 people found the longer you spend sitting down the greater your risk of poor health, even if you otherwise do regular exercise.
3 Professor David Dunstan, from the Baker IDI Heart and Diabetes Institute, says health workers usually focus on trying to increase people’s participation in sports, and trying to get them to do at least half an hour of exercise every day. “We need to think more about what we do with the fifteen hours of non-exercise waking time,” he said. Sitting can be bad for our health because when we sit down, there is an absence of muscle movements, explains Professor Dunstan. These movements are required for the body to clear blood sugar and blood fats from the blood stream.
4 Studies on animals have shown that when the body stops moving for long periods of time, it slows down one of the key enzymes needed to break down blood fats. The study, published in a magazine called the Archives of Internal Medicine, found adults who sat for more than eleven hours a day had a 40 per cent higher risk of dying within three years, compared with those who sat for fewer than four hours a day. People who sat for eight to eleven hours a day increased their risk of dying by fifteen per cent.
5 “We sit while eating our breakfast, we sit as we drive, we sit behind our desk all day, we’re always sitting down and this is a health risk.” Professor Dunstan said the modern, city environment encouraged sitting behaviours. “We need to take those opportunities to stand up, while on transport, at work, during our leisure time,” he said. He acknowledged that sitting for less than four hours a day was unusual. “It will require people to make big changes, which is hard,” he said. “But that’s the goal.” The findings were true for all age groups, sexes, weight groups and physical activity levels.
2 Not only do we need to get more exercise, but we also need to spend less of our time sitting down, Australian researchers say. Their study of more than 220,000 people found the longer you spend sitting down the greater your risk of poor health, even if you otherwise do regular exercise.
3 Professor David Dunstan, from the Baker IDI Heart and Diabetes Institute, says health workers usually focus on trying to increase people’s participation in sports, and trying to get them to do at least half an hour of exercise every day. “We need to think more about what we do with the fifteen hours of non-exercise waking time,” he said. Sitting can be bad for our health because when we sit down, there is an absence of muscle movements, explains Professor Dunstan. These movements are required for the body to clear blood sugar and blood fats from the blood stream.
4 Studies on animals have shown that when the body stops moving for long periods of time, it slows down one of the key enzymes needed to break down blood fats. The study, published in a magazine called the Archives of Internal Medicine, found adults who sat for more than eleven hours a day had a 40 per cent higher risk of dying within three years, compared with those who sat for fewer than four hours a day. People who sat for eight to eleven hours a day increased their risk of dying by fifteen per cent.
5 “We sit while eating our breakfast, we sit as we drive, we sit behind our desk all day, we’re always sitting down and this is a health risk.” Professor Dunstan said the modern, city environment encouraged sitting behaviours. “We need to take those opportunities to stand up, while on transport, at work, during our leisure time,” he said. He acknowledged that sitting for less than four hours a day was unusual. “It will require people to make big changes, which is hard,” he said. “But that’s the goal.” The findings were true for all age groups, sexes, weight groups and physical activity levels.
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