Abstract
Research background and hypothesis. The synergy of central and peripheral changes while performing easy exercises in repetitive manner should show central or peripheral changes which start increasing and become a trigger for functional mobilization.Research aim. The aim of this study was to determine the mobilization peculiarities of central and peripheral cardiovascular function in Greco-Roman wrestlers cohort while performing a dosed exercise test in repetitive manner.Research methods. Greco-Roman wrestlers, sprinters, endurance runners and non-athletes underwent three Roufier tests (30 squats per 45s) with 2 minutes of recovery between them. The changes in the heart rate (HR) and JT interval taken from 12-lead ECG and O 2 desaturation (StO 2 ) registered by near-infrared spectroscopy were analyzed.Research results. HR increased and JT interval decreased more and more in both non-athlete cohorts while there were no significant changes in all three athlete cohorts, i. e. we did not find any summing effects of the repetition of workloads. The tendency of increase in StO 2 at the second minute after the dosed workload was greater and greater with each consequent repetition of the testing workload in all cohorts.Discussion and conclusions. We have proved our hypothesis that peripheral changes during repetitive exercising start increasing earlier than the central ones. The dynamics of central and peripheral cardiovascular indices in non-athlete cohorts while repeating a dosed aerobic exercise test every two minutes demonstrates the cumulative effect of physical exertion whereas in elite Greco-Roman wrestlers as well as in other individuals adapted to physical loads functional indices reiterated.Keywords: electrocardiogram, dosed exercise test, oxygen saturation.
Highlights
One of the substantial peculiarities of competitive performance and predominant training loads in combat sports is the fluctuating load intensity which can not be planned precisely in advance
The dynamics of central and peripheral cardiovascular indices in nonathlete cohorts while repeating a dosed aerobic exercise test every two minutes demonstrates the cumulative effect of physical exertion whereas in elite Greco-Roman wrestlers as well as in other individuals adapted to physical loads functional indices reiterated
The results obtained during the study showed that values of heart rate (HR) and their dynamics in non-athletes women cohort differed from the ones in other cohorts during the rest and during the performance of all three testing workloads
Summary
One of the substantial peculiarities of competitive performance and predominant training loads in combat sports is the fluctuating load intensity which can not be planned precisely in advance. The peculiarities of mobilization of body functions and fast recovery is an important factor influencing sports performance, so training these peculiarities is a basic principle in athlete’s physical and functional training. The mechanism for exercise hyperemia is a century old enigma (Clifford, 2007) and interrelation between central and peripheral changes still remain of interest in physiology. Since the cardiovascular system is one of the constituent part and a holistic system of the body, the reactions of cardiovascular system to constant-load tests allow assessing the functional capabilities and functional peculiarities of the body (Vainoras, 2002; Perkiomaki, 2003; Van Schuylenbergh et al, 2004). Muscular activity is the trigger of various functional changes and with
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