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Minerva Ortopedica e Traumatologica 2018 September;69(3 Suppl 1):7-10

DOI: 10.23736/S0394-3410.17.03854-1

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English

Assessment of the functional capacity of the heart in hurdlers within the system of training-competitive conditioning

Anton SEMCHENKO, Anna NENASHEVA

Institute of Sports, Tourism, and Service, South Ural State University, Chelyabinsk, Russia


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BACKGROUND: Hurdling is an Olympic sport, which means that it is socially important for the country. For this reason, it is necessary to perform a fundamental medical-biological study of parameters of the functional state adaptation in hurdlers in order to find objective criteria of the preparedness for the successful performance during the large and elite competitions. The assessment of the functional capacity of the heart determining the level of physiological adaptation of regulatory systems of muscle activity is crucial task in the context of medical-biological support of sport conditioning in hurdling. The objective is to determine electrocardiographic criteria of adaptation of the functional state in hurdlers at different stages of training-competitive conditioning.
METHODS: Twelve highly-skilled hurdlers took part in the research. The control group included 30 master’s degree students (first year) not engaged in professional sport. Mean age of the participants was 22.8±0.25. The functional capacity of the heart was assessed with the help of ECG recording by 12-channel diagnostic system CARDIOVIT AT-104РС (Switzerland).
RESULTS: It was found that highly-skilled hurdlers had the following peculiarities: prevailing semivertical electrical heart position; functionally shorter duration of atrioventricular conduction during the basic conditioning period; sinus bradycardia, and non-specific changes of isoelectric interval ST at the special conditioning phase; and decreased duration of QRS complex from basic to competitive mesocycles. The formation of stable adaptation of atrioventricular part of the cardiac conductive system to hurdling-specific loads was observed.
CONCLUSIONS: The electrophysiological data on the functional capacity of the heart in hurdlers were obtained at the key stages of training-competitive conditioning; these data allowed the researchers to determine the main criteria reflecting the specifics of hurdlers’ physiological adaptation to specific loads and to recommend using electrocardiogram as means of medical-biological monitoring of the functional state of a hurdler’s body.


KEY WORDS: Electrocardiography - Heart function tests - Sport - Human physical conditioning - Physiological adaptation

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