Concatenation between cardiovascular parameters during low intensity of exercising at constantly changing conditions

Abstract

Introduction. Cardiovascular system is a vital body system and plays an important role in long-term adaptation to workloads. There are relatively small cardiovascular changes at onset of low intensity exercising and thus could be a good situation to vary by exercising tasks and compare dynamical concatenation between cardiovascular parameters. A lot of studies have showed the Differential Training (DT) is more effective than the traditional training based on repetition at constant conditions. Research aim. The aim of this study was to compare the changes in dynamical concatenation during the DT tasks between ECG parameters what according to the integral model represents the metabolic changes in myocardium and commands of systemic or organ level. Research methods and organization. 13 healthy adult male volunteers take part in this study. After adaptation to the laboratory environmental all participants performed two balance tests by standing on LIBRA balance board. The first balance task was without additional disturbances and during the second balance task the participant was asked to perform squats, i.e. this task while each next squat should be performed at constantly changing conditions, what means this situation was more close to the methodology of DT. The continuous 12-lead ECG registration was done before and after each balance task. Continuous ECG registration during both balance tests and during the rest was 3 minutes. In this study the changeable parametric interactions and its dynamics during exercise tasks ECG parameters monitoring and its data sequences analysis based on mathematical method founded upon matrix theory were applied (1). According to the model of integral evaluation of body functioning during exercising (2) the concatenation between ECG parameters representing commands of systemic level (RR intervals) commands of organ level (QRS) and metabolic changes in myocardium (JT intervals) wer[...].