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CARDIORESPIRATORY DETERMINANTS OF FUNCTIONAL CAPACITY OF CROSS COUNTRY SKIERS

V. A. KURASHVILI FSBI FEDERAL SCIENCES CENTER FOR PHYSICAL CULTURE AND SPORT, MOSCOW, RUSSIA

Objective: overtraining prevention, control over the process of urgent recovery, the timely detection of potentially dangerous changes in the organism of athletes.
Materials and Methods: 20 elite cross country skiers (male n = 10; female n = 10) were involved in the study. For the non-invasive measurement of various physiological parameters (central and peripheral hemodynamics, lung function) test system “Simona 111” was used. The most informative indicators included the adaptation reserve (AR), the integral balance (IB) and the cardiac reserve (CR), which showed a high validity for the athletes in endurance sports.
Results: high parameters of hemodynamics, respiration and metabolism were observed in all skiers. The values of selected indicators were: CR = 5-10, IB = 180-450, and AR = 800-1500. The increase in the level of sport's performance correlates with an increase in the CR, the IB and AR.
Conclusions: after an intense workout or competition a decrease in CR was observed. AR after exercise decreases to normal values (500 ± 100).
Keywords: 
cross country skiers; annual training macrocycle; general and individual physical efficiency; functional reserves of the cardiovascular system.