A study by the School of Public Health and Tropical Medicine at the University of Tulane, in New Orleans (USA) has revealed a new benefit that exercise brings to the body: the greater the physical activity, the lower the rise in blood pressure in response to a diet high in salt.
The director of this work, Casey M. Rebholz, warns that patients should be advised to increase their physical activity and ingest a smaller amount of sodium. Restricting sodium is especially necessary to reduce the blood pressure of more sedentary people.
Questionnaires were used to determine the level of physical activity of the participants and to divide them into four groups, from the one that included the most sedentary to the most active. The authors of the study compared the blood pressure of these volunteers, who followed two different diets for a week, one of them low in sodium (3,000 mg / day), and another high in sodium (18,000 mg / day). The American Heart Association advises a consumption of less than 1,500 mg of sodium per day. In the event that a person's average systolic blood pressure increased 5% or more of the low-sodium diet compared to the high-sodium diet, the researchers considered this person very sensitive to salt.
The study revealed that, when compared with the more sedentary group, the chances of being sensitive to sodium, according to the age and gender of the participants, were 10% in those people belonging to the group most similar to the group with the least activity, a 17 % in the closest to the group with more activity, and 38% in the case of the most active.