NATURAL SCIENCES

Journal of fundamental
and
applied researches

Influence gravitational unloading of the spine on the rate and rhythm of the heart

2014. №4, pp. 35-39

Gorst Victor R. - D.Sc. (Biology), Professor, Astrakhan State Medical University, 121 Bakinskaya Str., Astrakhan, 414000, Russian Federation, horst1955@mail.ru

Polunin Ivan N. - D.Sc. (Medicine), Professor, Head of Chair, Astrakhan State Medical University, 121 Bakinskaya Str., Astrakhan, 414000, Russian Federation, prejama@yandex.ru

Gorst Nina A. - D.Sc. (Biology), Professor, Astrakhan State University, 1 Shaumyan Sq., Astrakhan, 414000, Russian Federation, nagorst@mail.ru

Polukova Maria V. - undegraduate student, Astrakhan State University, 1 Shaumyan Sq., Astrakhan, 414000, Russian Federation, marpolly@mail.ru

Lychagina Svetlana N. - post-graduate student, Astrakhan State University, 1 Shaumyan Sq., Astrakhan, 414000, Russian Federation, svetlishko@list.ru

Gravity has a significant effect on blood circulation. This is due to a direct effect on blood flow and indirect influence through the nervous system. The aim of this study was to investigate the state of the cardiovascular system and the processes of formation frequency and heart rhythm in conditions of vertical stretching of the spine at different activity of the autonomic nervous system. Investigations were carried out on 31 people whose age was 18-20 years. We measured the hemodynamic parameters, ECG, performed analysis of heart rate variability in normal conditions and during spinal traction. It was found that gravitational unloading of the spine leads to activation of the sympathetic division of the autonomic nervous system. The most pronounced hemodynamic changes were observed in subjects with high initial activity of the parasympathetic nervous system.

Key words: гравитация, позвоночник, ритмообразовательная функция сердца, вариабельность сердечного ритма, вегетативная регуляция, gravity, the spine, rhythm-formation function of heart, heart rate variability, autonomic regulation