Scientists have uncovered the effect of aerobic exercise on the nervous system of the heart
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- Scientists have uncovered the effect of aerobic exercise on the nervous system of the heart
Regular aerobic exercise can change the nerve nodes that regulate the work of the heart on the left and right sides of the body in different ways. This is the conclusion reached by scientists at the University of Bristol. This was reported on July 13 in the journal Science Daily.
The scientists studied stellate ganglia, paired clusters of nerve cells located in the lower neck and upper chest. They belong to the sympathetic nervous system and transmit signals to the heart that can increase the frequency and strength of contractions.
After ten weeks of moderate aerobic training, the researchers found pronounced asymmetry. In trained animals, the number of neurons in the right nerve node relative to the left was about four times higher than in untrained rats.
At the same time, the neurons in the left ganglion almost doubled in size, while the cells on the right side became slightly smaller. The results show that physical activity not only strengthens the cardiovascular system, but also rebuilds the nervous network that controls it.
"These nerve clusters act as a brightness regulator for the heart. We have shown that regular moderate exercise rebuilds this mechanism differently on each side of the body," said Augusto Coppi, senior lecturer in veterinary anatomy at the University of Bristol.
Stellate ganglia can become overly active in arrhythmias, some forms of chest pain, and takotsubo syndrome, which is also called broken heart syndrome. To treat such conditions, doctors can use blockages of nerve nodes or partial destruction of the pathways.
According to the authors, understanding the left-hand and right-hand differences in perspective will help to choose the area of influence more accurately. However, the study was conducted only on rats and does not yet allow us to conclude that similar changes occur in humans.
On June 10, Medical Xpress magazine reported on the ability of sports to compensate for the harm of sedentary work. According to scientists, a course of high-intensity interval training lasting 12 weeks significantly improves aerobic performance. At the same time, the researchers emphasized that this does not protect the leg vessels from deterioration of function caused by two hours of continuous sitting.
Переведено сервисом «Яндекс Переводчик»
