PhD, Associate Professor R.G. Ardeev¹
PhD, Associate Professor T.I. Gornaya¹
PhD, Associate Professor E.A. Evsetsova¹
PhD, Associate Professor Yu.V. Sirenko²
PhD, Associate Professor R.R. Fattakhova^2
1Birsk branch of Bashkir State University, Birsk
²Eastern Academy of Economics, Law and Humanities (VEGU Academy), Ufa

The main role in the adaptation of the body to functional tests belongs to the cardiovascular system, which is an integral part of the adaptation problem. To preserve the optimal state of the body, the cardiovascular system is to adequately distribute the blood to the blood vessels. The article analyzes the cardiovascular system responses to the low-intensity functionality tests in the 22-29 year olds. The sample was tested by the cycle ergometer tests at 0.25 W/kg in the passive (motor-assisted) and non-resisted cycling modes. The cardiovascular system adaptation mechanisms were analyzed using the three-polar chest rheography. Every subject was tested in a quiescent state and then by passive cycling tests in the two work modes followed by the functionality tests.
The study showed significant differences in the cardiovascular system responses and central haemodynamics rates in the sample – that may be interpreted as differences in the cardiovascular system responses to the low-intensity physical workloads. Of special interest for the study purposes were the passive motor-assisted cycling tests rated at 60 rotations per min – free of serious muscle stresses in the adaptation process associated with reductions in the vascular tonus and blood pressure. These tested responses expand our knowledge of the natural physiological responses to the low-intensity physical workloads and may open up new opportunities for the rehabilitation service and special controlled physical training models.

Keywords: physical workload, heart rate, minute blood stroke, blood pressure.

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