Exercise 11 minutes a day for a longer life



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Some previous research had suggested that the answer was no. A 2016 study involving more than a million people found that men and women needed to exercise moderately for about 60-75 minutes a day to reduce the side effects of sitting.

That study, however, like most similar previous research, asked people to remember how much they moved or sat, which can be problematic. We tend to be unreliable storytellers of our lives, overestimating physical activity and underestimating how much we are sitting. But if a large number of people remember this wrongly, the paradoxical result is that exercise seems less powerful than it is, as the “active” people in the studies seem to have needed a lot of exercise to reap the health benefits. , when the objective amount of exercise actually completed was less, and this smaller amount produced the gains.

So for the new study, which was published last week in a special issue of the British Journal of Sports Medicine devoted to the World Health Organization’s updated physical activity guidelines and related research, many of the authors of the review 2016 decided to, in effect, repeat the previous research and analysis, but, this time, use data from people who had worn activity monitors to objectively track how much they moved and sat.

Scientists collected the results of nine recent studies in which nearly 50,000 men and women wore accelerometers. The volunteers in these studies were middle-aged or older and lived in Europe or the United States. Combining and collecting data from the nine studies, the scientists found that most of the volunteers sat a lot, averaging around 10 hours a day, and many barely moved, exercising moderately, usually walking, for just two or three hours. three minutes a day.

The researchers then checked the death logs for about a decade after people joined their respective studies and began comparing lifestyles and lifespans. By dividing people into thirds, based on how much they moved and sat, the researchers found, to no one’s surprise, that being extremely sedentary was dangerous, with people in the upper third for sitting and in the lower third for activities they had about the 260% more likely to die prematurely than men and women who moved more and sat less. (The researchers checked smoking, body mass, and other factors that may have influenced the results.)

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