Pogodina
S.V., Yuferev
V.S., Aleksanyants G.D., Borodina K.A.
Crimean Federal University of V.I. Vernadsky,
Simferopol, Republic of Crimea, Russia
Physiological changes in the
cardiovascular system in the organism of the male athletes in the age range
17-46 years.
Functional
capabilities of cardiovascular system are determined by the peculiarities of
autonomic regulatory influences in various periods of ontogenesis and vary widely both in relation to
endogenous mediators and to the nature of the vascular responses to physical
stimuli [2, 3, 4]. The study of functional changes in the cardiovascular system
during ontogenesis, is an important task of developmental physiology. The most
commonly used methodological approach to solve this problem in a sports
activity was to study the functional changes in the cardiovascular system (CVS)
of athletes in the direction from the unstable stage of adaptation to reserve
stage of the long-term adaptation against the background of the age
development. This problem was viewed extremely rare [6] and has not been
studied purposefully in the direction from the reserve stage of long-term
adaptation to the stage of loss of functional reserves against the background
of involutional processes in the
organism of the athletes. In this connection, the main purpose of this work is to study
the functional changes in the cardiovascular system of the male athletes in the
age range 17-46 years. Also to study the degree of influence
of physical activity on age-related changes in the СVS of athletes was investigate the
untrained males of 17-46 years.
Methods: The study involved
athletes, who are engaged in kinds
of sports aimed at the development of strength and endurance, as well as
untrained males from three age groups: 17-18 years (boys), 22-26 years (the
first period of mature age) and 40-46 years (the second period of mature
age).Total were examined 180 people. Kardioritmogramm analysis was used to
study heart rate variability and the method of reography was used to study hemodynamic
responses [1, 4]. Statistically significant differences were determined by
Student t-test. Also the Spearman correlation analysis was used. The results of
studies have shown that athletes of the second period of mature age have
changes in the functions of the cardiovascular system compared with athletes
boys and athletes of the first period of mature age, which is manifested in the
reduction of regulatory and cardiovascular hemodynamic mechanisms in relation
to age and adaptation processes. The detected functional changes that are
common to all athletes of the second period of mature age are expressed in
lowering of heart rate variability, in an increase of vagosympathetic index and in a high degree
of inertia intraorganic regulation of the heart muscle. Analogous changes are typical for untrained persons of
the second period of mature age. The functional changes that associated with
the specifics of long-term adaptation in athletes of the second period of
mature age are manifested in hyperkinetic reaction to dosed load from arterial
pressure, in inadequately for metabolic demand increase in left ventricular in
athletes who are engaged in kinds of sports, aimed at the development of
strength and in non-reactivity of vascular and cardiac components in athletes,
who exercise endurance. Vascular response to standard load in untrained persons
of the second period of mature age are associated with decrease in diastolic
blood pressure. The cardiac responses are associated with the fall of left
ventricular working capacity with increasing the intensity of the blood flow.
There is a direct interrelation of index LF / HF and minute volume of blood
flow, at runtime the dosed physical loads by athletes of the second period of
mature age, who are engaged in kinds of sports, aimed at the development of
endurance. This indicates a
close direct correlation vagosympathetic index dependence on the intensity of
blood circulation in athletes of 40-46 years, who exercise
endurance. There is a dependence of the hemodynamic parameters on variability
indices in the group of athletes, who are engaged in kinds of sports, aimed at
the development of strength. The strong interrelation of autonomic regulation
mechanisms with a degree of relaxation of the myocardium was marked in untrained
persons of the second period of mature age.
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