[The use of a specialized food product based on fermented milk whey to enhance the adaptive potential of athletes (skiers-riders)].

Specialized sports nutrition is one of the most important factors in the extension of the functional potential of athletes, providing adaptive resistance to physical stress, which determines the high physical performance and prolongs athletic longevity of the athletes. The study involved 30 skiers-racers (the average age of 19.5±1.

Functional Features of Microcirculation System and its Possibilities of Oxygen Transport in Children and Youths of Bryansk Region in Conditions of Radioecological Pressure.

The questions of influence of low radiation doses on microcirculation of blood in ontogeny of males from 7 to 27 years are presented in the article. Using the method of laser Doppler ultrasounds, optical oximetry and laser fluorescent diagnostics, we studied the blood perfusion level in the microcirculation system of 315 schoolchildren and students, considered the regulation mechanisms of microcirculation, the level of oxygen saturation of hemoglobin both in the circulation system and mixed blood, the index of oxygen utilization in tissues and the value of fluorescent use of oxygen. We received the information about the changes in the frequency of occurrence of different microcirculation types associated with the age and region of residence.

Spectral Dependence of Chlorophyll Biosynthesis Pathways in Plant Leaves.

This review covers studies on the dependence of chlorophyll photobiosynthesis reactions from protochlorophyllide on the spectral composition of actinic light. A general scheme of the reaction sequence for the photochemical stage in chlorophyll biosynthesis for etiolated plant leaves is presented. Comparative analysis of the data shows that the use of light with varied wavelengths for etiolated plant illumination reveals parallel transformation pathways of different protochlorophyllide forms into chlorophyllide, including a pathway for early photosystem II reaction center P-680 pigment formation.

[The influence of fermented dairy whey on morphofunctional indices and physical training of sportsmen].

The aim of the study was to examine anthropometry, physical fitness, metabolism at the level of the microcirculation and adaptive processes of the organism as a whole under the inclusion of enzyme-hydrolyzed whey in the diet of 27 weightlifters 17-23 (21.7±2.7) years old, with the level of sports skills of 1 category of up to masters of sports.

Mechanisms of phototransformation of protochlorophyllide into chlorophyllide.

The purpose of this review is to summarize and discuss data obtained in studies on the mechanisms of the primary photophysical and photochemical reactions of protochlorophyllide photoreduction in plant materials (etiolated leaves and leaf homogenates) and in model systems. Based on the results of numerous studies, it can be stated that the reduction of active forms of the chlorophyll precursor is a multistep process comprising two or three short-lived intermediates characterized by a singlet ESR signal. The first intermediate is probably a complex with charge transfer between protochlorophyllide and the hydride ion donor NADPH.