IMPACT OF VARIOUS SPORTS ON ATHLETES’ PHYSICAL PERFORMANCE IN BICYCLE ERGOMETER TEST
In comparison with ski runners Taekwondo practitioners had higher body mass index, power parameters but at the same time lower ventilation parameters (vital capacity, vital index) and higher strain of hemodynamics regulation at rest. In ski runners we observed significant bradycardia at rest; Skibinskaya index values indicated higher levels of cardiorespiratory system training in ski run- ners. In predetermined staged bicycle ergometer tests (up to 150 Watt) Taekwondo practitioners showed higher cardiorespiratory reactions (oxygen consumption about 58% of maximum), and lower “oxygen ceiling” in comparison with ski runners. In maximal tests ski runners showed higher power, achieved higher functional levels (oxygen consumption at 97.5% of maximum), displayed more effective work of cardiorespiratory system (by parameters of oxygen pulse, specific physiological cost of work and efficiency). They also had lower specific cost of work unit in bicycle ergometer tests: lower pulse (cardiac), pressure, respiratory, oxygen and energy cost - with higher work efficiency. Our data suggest that ski runners have more optimized and cost-effective energy expenditure and physiological functions, they are more trained and have higher endurance. Ski runners work more effectively when performing maximal load ergometer test than when performing staged test up to 150 Watt.