V.G. Dvoenosov - Dr.Sc. (Med.), Head of Department of Health Prevention and Psychological Care, Kazan (Volga region) Federal University. E-mail: dvoenosovvg@yandex.ru
R.A. Yusupov - Dr.Sc. (Med.), Head Department of Physical Education and Sports, Kazan National Research Technical University n.a. A.N. Tupolev. E-mail: rinatbox@rambler.ru
V.I. Torshin - Dr.Sc. (Biol.), Professor, Academician REA, Head of Department of Normal Physiology, Peoples Friendship University of Russia, Moscow. E-mail: vtorshin@mail.ru
Yu.P. Starshinov - Ph.D. (Med.), Associate Professor, Department Normal Physiology, Peoples Friendship University of Russia, Moscow. E-mail: 1345301@mail.ru
I. V. Radysh - Dr.Sc. (Med.), Professor, Academician REA, Head of the Department Management of nursing activities, Peoples Friendship University of Russia, Moscow. E-mail: iradysh@mail.ru

The results of studying the physiological reactions of the cardiorespiratory system in students with different levels of pulmonary ventilation in the conditions of hyperventilation. We examined 38 healthy female students aged 18-20 years in the follicular phase of 6-8 days of the menstrual cycle. As the functional load used 2-minute, dosage hyperventilation feedback. Found that in hyperventilation mode is used, leads to significant changes on the part of the cardiovascular system, respiratory gas exchange and heart rate variability in students associated with the decrease in the efficiency of pulmonary ventilation, gas exchange and heart activity, an increase in the degree of activity of sympathetic nervous system, decrease activity of an independent regulatory circuit and voltage regulation mechanisms of heart rhythm. Revealed that an individual's level of relative pulmonary ventilation influenced the adaptive responses of the cardiorespiratory system and the mechanisms of regulation of cardiac activity in the conditions of hyperventilation. The connection between the initial level of pulmonary ventilation with indicators of external respiration during hyperventilation test. In students with initially high relative increase in pulmonary ventilation was associated with an increase in tidal volume, respiratory rate as they have decreased significantly (p <0.001). At the same time they noted the significant increase in oxygen consumption and carbon dioxide emissions. Students with initially low breathing index are more resistant to hypocapnia than high breathing index, all of whom had symptoms of the condition of testifying about the depletion mechanisms of regulation.

 

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