[Mitochondrial aspects of fatigue in sports].

National literature on fatigue in sports related to mitochondrial activity and possible drug and non-drug correction approaches over the past 5 years was reviewed. The significance of acidosis as a factor limiting muscle activity, energy production, adenosine triphosphate utilization, and activation of lipid peroxidation was shown. The results of ultrastructure studies in the modulation of gene expression related to the characteristics of tonic and phasic muscles and a histochemical method of assessing the types of these muscle fibers are presented.

[Transcranial electrostimulation and serotonin laser phoresis in the athletes experiencing a combined effect of fatigue and psycho-emotional stress].

Rationale: At sports submaximal loads accompanied by muscle fatigue due to metabolic transformations, the conditions are created for the development of combined endogenous and exogenous emotional stresses. An important role in the development of stress is played by the state of adaptation mechanisms, in which sintoxic and catatoxic programs are involved, as well as the GABA-dopaminergic system. There is insufficient information on the possibilities for reducing the manifestations of stress.

[The application of electrolaser myostimulation and laserophoresis of biologically active compounds in sports medicine (a review)].

This scientific review highlights peculiarities of the delivery of laser radiation to the tissues of the athlete's body by means of laser electrophoresis of biologically active substances and the possibilities for electrolaser myostimulation. The main features of electrical myostimulation based on the application of laser-generated radiation are described. The authors emphasize the necessity of taking into account the neurophysiological dependence of active and passive contractile muscular activity during training.

[Relationship between the Parameters of Muscular and Cardiovascular Systems in Graded Exercise Testing in Subjects Doing Regular Exercises and Sports].

We analyzed the relationship between EMG and ECG parameters during graded step-dosed exercises with the use of bicycle ergometer in subjects doing regular exercises and sports. We observed the dynamics of EMG and ECG parameters in graded exercise testing. During physical activity of low intensity, muscular effort is mainly due to an increase in the heart rate; during activity of high intensity, the electrophysiological processes of the whole myocardium are involved.

[Assessment of cardiorespiratory functions in patients receiving suggestive psychotherapy].

It is shown that suggestive psychotherapy based on verbal suggestions provides a tool for individual correction of the patient's functional state. It reduces sympathetic and promotes parasympathetic influences, decreases high initial level of psychoemotional tension, and normalizes relationship between cardiac and respiratory rhythms. Also, suggestive psychotherapy has beneficial effect on the psychological sphere and subjective feeling of well-being, reduces anxiety, strengthens the sense of confidence and hope for a cure.