Conjugated changes in indicators of oxygen consumption and arterial pressure at athletes in response to various ergometric loads
Introduction. Blood pressure, as a complex indicator of the circulatory system in some cases can be a limiting factor that determines the level of oxygen consumption during physical activity. This can be reflected in the coupled changes in pressure and oxygen consumption in response to various kinds of ergometric loads. At the same time, the values of blood pressure will increase not only adequately to the performed load (power), but also adequately to the nature of the performed ergometric locomotion, in connection with which it is necessary to conduct a separate analysis of the data depending on the nature of the method of ergometry used. The aim of the study was to analyze the associated changes in oxygen consumption and blood pressure in athletes in response to various ergometric loads. Methodology and organization of research. The following ergometers were used during the load testing: Cosmos quasar treadmill (group 1,216 people), e-Bike ergometer (group 2, 28 people), concept 2 rowing ergometer (group 3, 36 people). The sports qualification of the subjects was from 3 category to the Master of Sports of the Russian Federation. Using the Metalyzer 3B gas analyzer (Germany), absolute and relative indicators of maximum oxygen consumption (l/min, ml/kg), time to reach maximum oxygen consumption, and also fan threshold 1 and oxygen consumption at the time of reaching the fan threshold were recorded. Research results and discussion. As a result of the correlation analysis, it was found that statistically significant correlations of blood pressure in group 3, both before and after exercise, with oxygen consumption were not observed. In group 2, statistically significant weak and average correlations of oxygen consumption with some indicators of blood pressure are recorded, both at rest and when performing an ergometric load. In group 1, there were statistically significant, but very weak relationships between maximum oxygen consumption and resting blood pressure, and weak with pulse pressure after exercise. Conclusions. The correlation dependences of blood pressure and oxygen consumption during exercise are dependent on the type of locomotion. Moreover, the greatest number of them, of the three types of loads used, is observed with a bicycle ergometric load performed by the legs, and the smallest - with the use of a rowing ergometer.