The cardiorespiratory system of young taekwondo athletes of the Komi Republic in different seasons of the year

Environmental factors in the northern region make high demands on the physio- logical systems of an organism. Young athletes living permanently in the Komi Republic are under the influence of unfavorable ecological factors and intensive physical loads. The adaptation of the human organism to extreme conditions of environment largely depends on the condition of the cardiorespiratory system.In spring-summer and winter periods the functional condition of the cardiorespi- ratory system has been studied in boys aged 9-12 living permanently in Vorkuta and Syktyvkar (subarctic and temperate climatic zones, respectively), practicing Taekwondo. Heart rate, blood pressure, external respiratory function were measured before and after physical exercise.The analysis of the functional condition of the cardiorespiratory system when performing physical exercise and recovering from it showed that in Taekwondo athletes of Vorkuta compared with Taekwondo athletes of Syktyvkar the para- meters of heart rate, systolic and diastolic blood pressure were significantly higher in spring-summer time, the parameters of heart rate, diastolic blood pressure were significantly higher in wintertime. The more pronounced change in the patency of airway tracts was revealed in young Taekwondo athletes of Vorkuta compared with those of Syktyvkar in response to physical load in spring-summer and wintertime.Severe winter conditions of inhabitancy have additional negative influence on the organism of young Taekwondo athletes living permanently in Vorkuta, while short polar spring and summer cannot provide complete health recovery of children living beyond the Polar Circle.