Aerobic performance of young rowers

The purpose is to identify the aerobic performance of the rower organisms aged 16-18 years during specific exercise stress testing. Materials and methods. The study was carried out among rowers with sport qualifications varying from 1st category to Master of sports experiencing a stepwise increasing exercise stress on the Ergometer Concept 2 in the transitional preparation period. The authors used Metalyzer 3B (Germany) gas analyzer to register absolute and relative indicators of maximum oxygen uptake (VO2 max); period of ventilatory threshold achievement 1 (VT) as one of indicators of aerobic-anaerobic transition; oxygen uptake at the moment of ventilatory threshold achievement; respiratory exchange ratio (RER); the depth and frequency of respiratory minute volume. Circulatory system dynamics was recorded at rest in a lying position with the use of MARG 10-01 monitoring system (Mikrolyuks company, Chelyabinsk). Results. The study revealed that the chronotropic function of the heart of the majority of athletes was within normal limits, but in some cases bradycardia was recorded. The balance between sympathetic and parasympathetic nervous system is common for the studied group. Concerning the average values of aerobic performance of athletes, it was noted that the rowers achieved the ventilatory threshold on average at the fourth exercise stress stage (190 watts), and maximal aerobic power was achieved at the 5th stage (220 watts). The indicators of the maximum oxygen uptake of the majority of athletes were at an average level, compared with the indicators of adult athletes, except for two athletes whose maximum oxygen uptake exceeded 70 ml/kg/min. Conclusion. Indicators of the cardiovascular system of rowers turned to be normal both at rest, and during stepwise increasing exercise stress. It can be explained, on the one hand by different functional fitness of athletes, and on the other hand by inaccurate definition of the ventilation threshold when experiencing a stepwise increasing exercise stress.

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