The purpose of the article was to determine the functional state of the cardiorespiratory system and the vegetative regulation of the heart rhythm of male students engaged in the sports-pedagogical perfection groups on boxing when performing the dose-related physical exertion. To implement the goal, the following research methods were used: photoplethysmography, heart rate variability (HRV), cardiointervalography, spirography, tonometry, veloergometry, methods of mathematical statistics. Thus, with comparatively the same relative values of the results of the PWC170 sample, the boxer students of all weight categories, the sympathetic regulation of cardiovascular activity is dominant, which indicates the same tropic support for performing physical exertion. During the restitution period, there is a decrease in the frequency-volume parameters of the respiratory system, to a greater extent, due to the frequency of the respiratory cycles. The centralization index (according to R. M. Baievskyi) remains unrefined in comparison with the results of the sample, while maintaining a tendency to dominate the “heavyweights” of sympathicotonia balance. In this case, the ratio of low-wave to high-wave components of HRV (LF) indicates the dominance of sympathetic regulation of cardiovascular activity of boxer students of all weight categories. It is typical that students-boxers of heavy weight categories have a fairly low overall absolute level of regulatory systems activity, the LF/HF ratio is in the low-wave range, which indicates a low adaptation of the regulation of cardiac activity of boxer heavy students to submaximal load. Since the PWC170 sample is performed mainly in submaximal mode, which is characteristic for lightweight boxers and is non-specific for heavyweights, it is logical that the under-recovery of the trophic (oxygen) function in boxing students in heavy categories is due to the low functionality of the organism to the glycolytic regime of power supply.
The purpose of the research was to determine the functional state of the cardiopulmonary resection system of male students engaged in the group of sports and pedagogical improvement in boxing, while performing metered physical loads of different orientations. Methods:pulsometry, tonometry, photoplethysmography, spirography, ergometry, methods of mathematical statistics. The results of the conducted research indicate that the volume of work performed directly depends on the weight category. The dynamics of changes in intensity and impact strengths with increasing durability depending on the weight category is different, namely: “light weight” perform a much larger amount of work than “heavy weight”.The biggest differences in the relative strength of a single strike are observed in the left-hand side, which is sufficiently complex for protection and effective for the attack being realized in the melee battle at the most vulnerable place of the enemy-the head. Obviously, this pattern can be determined by the dominant style of duel inherent in “heavy weight”, and/or genetically determined factors, in particular the peculiarities of temperament. This assumption is confirmed by the possibility of heavyweighters to carry out a series of strikes with significant frequency and effort in the shortest possible time, namely: when performing alactatic work, heavy-duty boxers carry a greater number of strokes, indicating a relatively higher ability to generate excitation in the cerebral cortex which is a determinant of temperament, which, in turn, determines the genetic component of readiness for the realization of activity. In boxers of heavy categories, the duel continues at a relatively low pace with a minimum “price” of work; achievement of victory takes place due to a series of bumps in the unprotected areas of the enemy in the alactatious and glycolytic modes of work. For lightweight players, it is inherent in a duel at a fast pace with a correspondingly high “price” of work, exhausting the enemy through the implementation of shock techniques of moderate strength, which ensures the corresponding outcome of the duel. “Heavy weights” take active attacking actions not so often, realizing the potential of stroke with active protective actions. The final effort is carried out with active protection, which causes the victory in the fight.
The article contains the results of the researches devoted to a solution of the problem of program and methodical ensuring physical training of the pupils of the first level of education in the extended-day groups. The theoretical justification and the results of experimental approbation of the author's program which has shown the high efficiency in a long pedagogical experiment is defined for the first time. The author’s program of sports and improving occupations during sports hour for the pupils of the first level of education is introduced in row establishments of the general secondary education of Republic of Belarus, the Russian Federation and Ukraine. The researches were conducted within an implementation of the master’s thesis «The content and direction of sports and recreation classes with the pupils of the first level of education in the extended-day groups» and the innovative project «Introduction of the Model of Formation of Physical Health of the Pupils of Establishments of the General Secondary Education by Means of Improving Physical Culture». The research objective is to develop a theoretically and experimentally proved program of sports and recreation classes during the sports hour with the pupils of the first level of education in the extended-day groups. The research methods are the following: an analysis of special scientific and methodical literature and standard legal documentation; the pedagogical supervision; an anthropometry; a pedagogical experiment; the control and pedagogical tests (tests); the physiological methods (the methods of an assessment of cardiovascular system); the methods of mathematical statistics. The author’s program of sports and recreation classes during the sports hours for the pupils of the first level of education visiting the extended-day groups is an effective remedy for increasing physical working capacity and a level of the development of physical qualities – aerobic endurance, force and power endurance, high-speed and power manifestations, and also improvement of a condition of health, has experimentally confirmed the productivity and can be recommended for purposeful use in the educational process of children aged 8–9 years. The prospect of further researches assumes the development of effective complexes of physical exercises for independent performance with the pupils who don't visit the extended-day groups in the establishments of the general secondary education.
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