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People who love to swim in the pool to be good for blood pressure. Within 3 months, swimming can lower blood pressure by an average of nine points.
Normal blood pressure is defined by the average readings exceeding 120/80 mm. Figures 140/90 mm or higher are categorized in high blood pressure, and reading between these two numbers are considered "pre-hypertension."
"Swimming is often promoted as a good sport for people who have aged. The reason is because they do not overload the joints and may cause the body to overheat, swimming is also the most popular sport both among parents after a walk," said the researcher, Hirofumi Tanaka from the University of Texas at Austin.
In a research report published in the American Journal of Cardiology, swim shown to improve blood vessel function of older adults and restrain the rate of blood pressure.
"Swimming is a great form of exercise that is very interesting because it is easy to do and inexpensive. And for not making weight-bearing body being held by the buoyancy of the water, this sport is friendly to knee and ankle," added Tanaka as reported by Reuters.
The study involved 43 adults with an average age of 60 who have high blood pressure or pre-hypertension but still in a healthy condition. The researchers asked the participants to swim or do relaxation exercises randomly.
Over 12 weeks, an outdoor swimming group did three or four times a week, gradually, to be able to achieve a 45-minute swim at a time. At the end of the study, the swimmers managed to reduce systolic blood pressure by an average of nine points. Systolic blood pressure is the top number in blood pressure readings. In contrast, the rate of blood pressure in the relaxation group did not change.
Similar results were found when the researchers asked participants wore portable monitors to track their blood pressure over 24 hours. On average, the swimming group had a systolic blood pressure of 119 mm Hg. This figure is down from 128 mm Hg at baseline.
Tanaka's team also used ultrasound tests to measure how far the participants blood vessel dilation in response to blood flow changes. Again, researchers again found improvements in the swimming group, but to no avail in the relaxation group.
Tanaka said that as long as the elderly can be a good workout, swim certainly can be a safe activity. Indeed there was a time when swimming can be risky because it is in cold water can cause changes in the heart and vascular system. However, most studies have shown that swimming safe as well as a walk.
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