[The efficiency of branched chain aminoacids (BCAA) in the nutrition of combat sport athletes].

Balanced nutrition of athletes involves the usage of both ordinary products and complexes of functional food ingredients that contribute to improving the performance of athletes, strengthening the immune system. One of the main components of specialized foods that are widely used in sports' nutrition and food supplements are branched chain aminoacids (BCAA): valine, leucine, isoleucine. of the work was to study the effect of the BCAA intake on the parameters of body composition and the immune status of combat sport athletes during the training period.

[Content of some vitamins in food ration and blood serum of professional athletes].

The aim of the work was a comparative assessment of the vitamin status of athletes specializing in different kinds of sport (bobsleigh, dispersing and pilots, biathlon, bullet shooting) by means of assessment of the content of vitamins in the diet and blood serum. 159 professional athletes of both sexes were examined in the pre-competition period of the sport activity. The average age of the surveyed 92 men was 21.

[Consumption of carbohydratecontaining beverages and their contribution to the total calorie content of the diet].

The article presents data on the frequency of consumption of carbohydrate-containing sweet carbonated drinks by the population of the Russian Federation and their contribution to the overall caloric intake of the diet. Questioning 11 850 people of different ages (from 12 to 60 years) and sex in all eight Federal Districts of Russia has been conducted. The frequency of food consumption has been studied, and in parallel dietary intake has been assessed using 24-hour recall method.

[The structure of macronutrient consumption by the population of various regions of Russian Federation].

The article presents data on the consumption of macronutrients by the population of large cities of all eight Federal Districts of the Russian Federation. Dietary intake assessment was investigated using method of 24-hour recall. The analyzed sample consisted of 11 850 people.

[Sources of added sugar and their possible significance in the formation of obesity and overweight].

The results of a study on the frequency of consumption of added sugar by the population of the Central Federal District of the Russian Federation are presented obtained on the basis of a questioning of 2043 persons of both sexes (Moscow, Kaluga, Michurinsk, Tambov). The sample in each age group of the subjects (12-17, 18-30, 31-45, 46-60 years) was about 150 persons of each sex. The gender distribution within the sample was uniform with a slight predominance of females (53.

[Frequency of consumption of sweet carbonated drinks by the population of different age groups of the Russian Federation].

The article analyzes the frequency of consumption of sweet carbonated beverages by various age groups (from 12 to 60 years) of the population of all Federal districts of Russian Federation. The presence of general regularities in the frequency of consumption of these drinks, regardless of the region, was established. About 5-8% of the population of different age and sex groups consumed sweet carbonated drinks with a fairly high frequency (5-6 times a week).

[L-carnitine: properties and perspectives for use in sports practice].

The analysis of published data relating to the use in sports practice metabolic non-doping agent--L-carnitine. The review discusses some aspects of the mechanism of its action on the human body. The information is given about the role of carnitine in the energy processes, mechanisms of carnitine deficiency.

[Role of histaminergic system in the regulation of nutrition].

In the review modern data on a role of various humoral factors (neuromediators, hormones, adipocytokines etc.) in regulation of appetite, food consumption and obesity are presented. The special attention is paid to the role of histamine and histamine receptors of H3-type in processes of regulation of a food intake.

[Identification of genetic polymorphisms associated with overweight in athletes of winter sports].

The identification of polymorphisms rs9939609 gene FTO, Trp64Arg ADRB3 and gene -866G> A UCP2 gene using multiplex allele-specific PCR hybridization-fluorescence detection in real time has been carried out in highly skilled athletes under the age of 30 years engaged in biathlon (n = 25) and bobsleigh (n = 28). The data on the frequency of allele risk of obesity has been obtained. The study of polymorphism rs9939609 of the FTO gene in biathletes found that 30% of them are carriers of the risk allele of obesity (A).