Key result
Standing position induces a hyperkinetic state of cardiac output compared to the supine position, reflecting adaptation to gravitational factors and centralization of blood circulation.
Why the study?
The study was conducted to evaluate the dynamics of cardiac output in standing and lying positions across postnatal ontogenesis.
Does standing position alter cardiac output dynamics compared to lying position across different age groups?
Observational (n=1,944)
Does standing position alter cardiac output dynamics compared to lying position across different age groups?
The study demonstrates that standing induces a hyperkinetic state of cardiac output as an adaptation to gravity, which may limit functional reserve and associate with circulatory problems.
The aim of the work was to show the dynamics of cardiac output (CO) in standing and lying positions in postnatal ontogenesis. Material and methods. The data were obtained on the basis of an observational study in 1944 people (1308 men and 636 women). The following age groups were: up to 8 years (n=55), 9-14 years (n=68), 15-21 years (n=226), 22-35 years (n=326), 36-55 years for women and 36-60 years for men (n=658), up to 70 years (n=413) and over 70 years (n=198). The study was performed standing up and after 15-20 minutes in the supine position on the complex of the expert diagnostic system “ANTHROPOS-CAVASCREEN” based on rheography. Results. Our data justify the identification of the type of dynamic organization of blood circulation in humans by the anthropo-physiological ratio of CO in standing/lying positions. The transition to a hyperkinetic state in orthostatics is a manifestation of adaptation to the gravitational (hydrostatic) factor of blood circulation to ensure the circulatory state of the cardiovascular system in the most constant and relevant for human life conditions of upright walking. The obvious direction of such adaptation is the centralization of blood circulation in the standing position and the formation of a hyperkinetic state of the pumping function of the heart. This orientation reflects the strained state of the cardiovascular system in the anti-gravity support mode, which not only limits the functional reserve for cardiac output in the standing position, but also clearly associated with the growth of both problematic circulatory conditions and nosological states formed on this basis.
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Dilenyan et al. (2021) reported an observational. Standing position vs. Supine position was evaluated on Cardiac output (CO) dynamics. Standing position induces a hyperkinetic state of cardiac output compared to the supine position, reflecting adaptation to gravitational factors and centralization of blood circulation.
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