The article presents the study of skilled athletes in the dynamics phase of immediate competition preparation to estimate the impact of drugs pharmacopoeia based on plant adaptogens Schisandra chinensis and Eleutherococcus senticocus. In the studies conducted in the dynamics of the 21-day precompetitive mesocycle, participated 24 qualified weightlifters (among whom were 5 Candidates for Masters and 14 Masters of Sports of Ukraine) with the average age 20.0 ± 1.5 years. All the athletes were included in the second group of weight categories for the distribution of weightlifters for scientific research (75-100 kg). The athletes were divided into 2 groups as follows: 14 athletes entered the main group, and 10 others made up the control group. The groups were representative according to age and morphometric characteristics. The athletes received a common pharmacological support (plastic and energy substrates, vitamin-mineral complexes, immunomodulators, etc.). The main group athletes got phytoadaptogens and placebo (0.02% glucose solution, 25 drops twice a day) . The athletes of the main group were further divided into two subgroups (I subgroup ‒ 7 athletes who took lemongrass, II ‒ 7 athletes who took Eleutherococcus). Statistical processing of the results was carried out using the licensed computer program GraphPadInStat (USA). During the data processing, the arithmetic mean and the standard deviation S (standard deviation) were calculated. The compliance of the indicators with the normal distribution law was checked using the Shapiro-Wilk test. To determine the statistical significance of the differences between the sample indices, the Student's test (t) was used provided that the sample distribution was in accordance with the normal law. If the sample did not comply with the normal distribution law, Wilcoxon's criteria (for coupled samples) and Mann-Whitney (for unrelated samples) were applied. Research of prooxidant-antioxidant balance in the level of cell membranes showed that durable ultra-intense stress was inherent in power sports, accompanied by the accumulation of lipid peroxidation products and decrease in antioxidant status of the organism. Using plant adaptogens gave athletes positive changes of these indices in parallel with the improvement of the parameters in power fitness. The positive effect of using plant adaptogens on the performance of weightlifters is confirmed by the data of the correlation analysis and serves as a basis for the use of these non-toxic substances as one of the components of the formation of a health-preserving technology of stimulation of working capacity. Besides non-toxicity these plant adaptogens are absent in WADA Forbidden list which brings us to conclusion that adaptogens can be one of the components forming of health technology stimulation of athlete's performance.
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