One of the main directions in the wrestlers training on the initial stage of sports training is the formation of the wrestler’s motion coordination abilities. Equilibrium function and anthropometric data including wrestler’s gender have essential differences in connection both with the child’s biological specialities and choosen athletic discipline special aspects. This research is focused on comparsion of variations in kinetic postural control affected by the lassitude among young athletes and non-athletes. 16 girl childs - freestyle wrestlers participates in this research. They are on initial stage of sports training. The control group consisted of 14 girl childs irrelevant to sports. There was made a hypothesis that the wrestlers lassitude can be measured subjectively (with the Borg scale) and objectively (with the stabilometrics), and that the wrestlers will better control their body position than the girls irrelevant to sports. Tecnobody Pro-Kin stabilometric platform was used to measure postural balance. There was determined statistically significant positive relationship of the investigated parameters changes between groups. As a result of the research we can make a conclusion that the offered method can provide reliable data concerning wrestler’s lassitude level. Analogues data are received with the rating of perceived exertion by Borg’s scale. As the result we can conclude that the offered postural balance research method is valid for the wrestler’s lassitude rating and can be used as a component of the complex athletes control system.

Annotation Research problem. It has been shown earlier that the physical training can reduce the resistance of the person to the vertical position of body. Simplifying the revealed regularities, it is possible to summarize that "highly trained athlete can run perfectly, but can't stand". It is known that at initially reduced orthostatic stability the growth of orthostatic tolerance is observed under the influence of the moderate training loadings. The task has been set: to study the hemodynamics indicators before and after the load tests, and not only in sitting position, but also in the standing one. Work hypothesis: orthostatic stability tends to decrease after long-term load among the insufficiently trained people, but to a lesser extent among the athletes that is connected with more adequate regulation of the peripheral blood-groove at orthoclase.

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Fluid and electrolyte imbalances can compromise physical performance of professional athletes. We have conducted a study to understand how aware athletes are of their hydration status and how they deal with dehydration. First, we surveyed 51 athletes (mean age of 20.4 years) specializing in different sports, including ice hockey, water polo, tennis and figure skating, using a questionnaire. Next, we analyzed the anonymized results of the laboratory tests run on the samples of 30 athletes specializing in futsal. We focused on hemotocrit and sodium levels and urine specific gravity as indirect indicators of hydration status. Survey results demonstrated that 86 % of the participants lacked knowledge of wise approaches to replenishing fluid or electrolytes after physical exercise, did not adequately control fluid intake and developed various degrees of dehydration. We noticed that awareness of hydration status negatively correlated with professional qualifications of the participants. Retrospective analysis of laboratory tests showed that hypohydration prevailed among high-class athletes: at least 73 % of them showed signs of dehydration. We emphasize the need for elaborating unified clinical recommendations on rehydration for Russian athletes that should be further approved by doctors and coaches.К ВОПРОСУ ОБ АКТУАЛИЗАЦИИ ПРОБЛЕМЫ ОБЕЗВОЖИВАНИЯ В СПОРТЕ AN UPDATE ON DEHYDRATION IN ATHLETESНарушение водно-солевого баланса -это фактор, лимитирущий физическую работоспособность профессиональных спортсменов. Нами было проведено исследование с целью определения степени информированности атлетов по проблеме дегидратации в спорте. На первом этапе было проведено с помощью разработанного авторами опросника анкетирование 51 спортсмена (средний возраст -20,4 года) со специализацией в различных видах спорта: хоккее на льду, водном поло, большом теннисе, фигурном катании. На втором этапе были проанализированы деперсонифицированные данные лабораторных исследований 30 спортсменов со специализацией в мини-футболе: оценивали косвенные признаки гидратационного статуса -гематокрит, содержание натрия в крови, удельную плотность мочи. По результатам анкетирования была констатирована низкая информированность 86 % спортсменов по вопросам рационального восполнения потерь жидкости и минералов вследствие физических нагрузок, что служит одной из важнейших причин неконтролируемого потребления жидкости и развития обезвоживания различной степени. Отмечена зависимость уровня информированности от спортивной квалификации атлета. При ретроспективном анализе данных лабораторного тестирования была ориентировочно установлена распространенность гипогидратации среди спортсменов высокой квалификации: вероятные признаки дегидратации имели место по меньшей мере в 73 % случаев. В России следует разработать и внедрить национальные клинические рекомендации по регидратации в спорте, которые были бы одобрены медицинским и тренерским сообществом.Ключевые слова: гидратационный статус, дегидратация, регидратация, спортсмены высокой квалификации, углеводно-электролит...