To increase young ski racers' sports skills, it is necessary to enhance the functional reserves of their cardiovascular system, their physical performance and special endurance, which is important for sports activities. Research aim is to test an improved training program for enhancing of ski racers' aged 15-16 physical performance, special endurance and functional reserves of the body. Research materials and methods. 24 young men (juniors) aged 15-16 took part in the research project. They were engaged in the «ski racing» group of sports improvement on the basis of the sports school in the Altai region (Russia) 4 times a week for 2 hours. Two groups of young men were examined: control (CG) and experimental (EG). The high-stakes testing of special endurance, physical performance and tolerance of the cardiovascular system to physical activity was carried out at the beginning of the preparatory period of the annual macrocycle and after the end of each training stage: stage I (May-June), stage II (July- September) and stage III (October-December). In both groups, the training program of the federal standard for this sport was used. In EG, training was carried out mainly by a variable method, at the third stage loads with high intensity (3-4 intensity zones) were performed, unlike in CG, where a uniform method was used and loads at the third stage were carried out in 1 and 2 intensity zones. Research results. The high-stakes testing results indicate a significantly high increase in the indicators of skiers-racers of EG group physical performance, special endurance and activity of the cardiovascular system, compared with the CG skiers' indicators. Conclusions. The program proposed by us to improve ski racers' aged 15-16 special endurance and functional capabilities of the cardiovascular system has shown its effectiveness.
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