Scientists from the University of Zurich in Switzerland, as part of a research team, have developed a new method of stimulating the heart using sound signals. The results of the study were as follows: published In European Heart Journal (EHJ).
18 healthy men between the ages of 30 and 57 participated in the study. They spent three consecutive nights in the laboratory. While the subjects slept, the scientists continuously monitored their brain activity, blood pressure, and heart activity. After the participants fell into deep sleep, the computer emitted a series of very short beeps at specific frequencies called pink noise. Such signals sound like static noise. Ten seconds of sound was followed by 10 seconds of silence, and then the process was repeated.
This experiment allowed researchers to monitor how pink noise affected sleep, heart rate, and blood pressure. It turns out that sound signals stimulate the heart, especially the left ventricle, to contract and relax more strongly. As a result, the pumping function of the heart improved and the left ventricle became able to supply oxygen-enriched arterial blood to the organs, limbs and brain. This has a positive effect on the cardiovascular system.
In addition to preventing cardiovascular diseases, the new technology can also be used for rapid and high-quality recovery after intense training in sports.
Researchers state that the positive effect was achieved after one night of sound stimulation. The authors now plan to begin additional studies involving women.
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