The association between steps per day and blood pressure in children

Lower levels of physical activity are associated with an increased overall cardiometabolic risk, as well as the risk or being overweight. It is difficult to determine the optimal level of physical activity that protects the needs of children and young people. Studies on the required number of steps, as well as approximating the daily volume of physical activity, are gaining increasing credibility in research and practice. Researchers propose a "rule" of ≥ 11,500 steps per day, for children and teenagers of both sexes. The aim of the study was to assess whether 11,500 steps a day is sufficient to maintain normal blood pressure among children and adolescents. 1002 children and adolescents aged 4–15 were included in the study. To assess physical activity, measured in the number of steps per day, the Actigraph accelerometer wGT3X-BT was used. The normal number of steps was defined as greater than or equal to 11,500 steps per day for children and teenagers, for both girls and boys. In the entire study group, a significantly lower risk of hypertension was observed when the number of steps was normal (OR is 0.45 and the upper confidence limit for OR is 0.71). The study confirmed the beneficial protective role of physical activity against hypertension in older children and adolescents. However, it should be emphasized that no such relationship has been demonstrated in the case of preschool children. The presented norms of the number of steps should be promoted to the wider community to make prevention of cardiovascular diseases even more effective.