American researchers have found a correlation between the number of steps people walk per day and risk of death from all causes. For this, they have correlated the activity data 4840 Americans who for several days had worn fitness bracelet, with their mortality over the 12 years since the beginning of the study. Among those who were in the eight thousand steps a day, the mortality rate was 51 percent lower, and among those who walked 12 thousand steps is below 65 percent (compared with the group whose members took place at four thousand steps or less). The intensity of the walking connection is not affected, write the scientists in the JAMA Network.
The fact that physical activity is one of the most important factors in maintaining a healthy lifestyle and longevity, it is well known to all. However, it is not always clear exactly how much (at least minimally) you need to exercise to, on the one hand, in fact, extend their life, and with another — not to make things worse (e.g. not to increase the risk of injury). In addition, it is unclear whether the reduction in mortality is exercise or enough of the underlying activity — for example, walk.
For walk, it also can serve as an objective and rather just a calculated indicator of activity in the study of the effect of physical activity on mortality and health in General. San Pedro-Maurice (Pedro Saint-Maurice) from the National cancer Institute and his colleagues in their study focused on the number of steps people walk per day — and compared them with mortality rates since the beginning of the study in 2003 to its completion in 2015.
In total, the study involved 4840 people aged 40 years (mean age of 56.8 years). Within a few days (to a week, for an average of 5.7 per day) each of them was wearing a fitness bracelet with accelerometer: scientists have analyzed not only the number of steps per day, but the intensity of the walk, which was measured at the peak walking speed per minute, half hour and day. In addition, the participants also provided demographic data and information about health and habits (presence of chronic diseases and lifestyle) — all these data are considered as side variables.
During the study from different reasons; died 1165 participants, of which 406 are from diseases of the cardiovascular system, and 283 — of cancer. On average, each participant took place at the nine thousand steps a day, but this figure varied strongly and — as predicted by scientists — reflects the risk of mortality in each group. Thus, in comparison with those, who were held to four thousand steps, those who were held to eight, mortality was lower at 51 percent, and among those who passed on 12 thousand steps by 65 percent. The intensity of the walk did not affect the relationship between the number of steps and the risk of dying from all causes.
Scientists, therefore, concluded that increasing the number of steps per day in fact associated with a lower risk of death from all causes — no matter how fast a person walks. However, another study showsthat walking quickly to reduce the risk to die is also useful.
When that intensive physical activity, as shown by other studies, the mortality rate is also not increase — at least among men — despite the potentially dangerous calcium deposits in the arteries (also, incidentally, associated with intense physical exertion).