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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2012; 58(3): 60-71

To the question of the heart rate fluctuations during submaximal work load by bicycle ergometry test

O.P. Yelisyeyeva, D.V. Kaminskyy, K.O. Semen, O.H. Mysakovets, I.V. Сhelpanova, A.K. Kurkevych

    Danylo Halytsky Lviv National Medical University, Lviv,Ukraine;Ukrainian Children’s Cardiac Center, Kyiv, Ukraine.
DOI: https://doi.org/10.15407/fz58.03.060


Abstract

The effect of oscillatory decrease in the heart rate and hemoglobin oxygen saturation (SaO2) during the submaximal workload (bicycle ergometry test) was demonstrated in high-performance athletes and volunteers practicing healthy life style. The obtained parameters (heart rate, SaO2, amplitude of oscillation, and recovery time) were analyzed taking into account modern notions about the mechanisms of pO2 maintenance during activation of aerobic metabolism in high-resistance organisms under extreme conditions. It is concluded that optimal functioning of cardio-respiratory system can be achieved only when its labile oscillatory parameters are synchronized at the various levels of functional hierarchy, which are maintained by the higher intensity of redox reactions, improved utilization of oxidative destruction products, more intensive fuctuations of endogenous oxygen, and fne regulation of hemoproteins’ role in the free radical reactions. This, in turn, promotes long-term adaptive activation reaction at the higher levels of reactivity. Further studies of the described oscillations could facilitate their use as the new functional diagnostic criteria for the estimation of reactivity and adaptive reserve mechanisms in sports and preventive medicine. Key words: submaximal workload, bicecle ergometry, heart rate, hemoglobin oxygen saturation, athletes, volunteers, functional reserve, new diagnostic criteria.

Keywords: submaximal workload, bicecle ergometry, heartrate, hemoglobin oxygen saturation, athletes, volunteers,functional reserve, new diagnostic criteria.

Full text: (PDF, in Ukrainian)

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