Influence of prior load on the kinetics of cardiorespiratory parameters during cycling exercise of different intensity

The aim of the study was to determine the influence of prior load on cardiorespiratory parameters’ kinetics during cycling exercise of different intensity. Methods: pulmonary gas exchange analysis, heart rate analysis, blood lactate analysis, continuous or intermittent increasing cycling exercise tests, determination of maximal oxygen uptake and lactate threshold, mathematical analysis of cardiorespiratory parameters’ (oxygen uptake, pulmonary ventilation, heart rate) kinetics, mathematical statistics. Main results: it was estimated for the first time that prior eccentric-concentric exercise, consisting of 100 drop jumps with 20 s of rest after each jump, increased the absolute values of oxygen uptake at steady state, i. e. decreased the aerobic work efficiency, during both moderate and heavy aerobic cycling exercise, but had no effect on the kinetics of cardiorespiratory system parameters at the onset of exercise, and did not change the slow component of the oxygen uptake kinetics. The prior incremental cycling exercise increased the absolute values of oxygen uptake during both moderate and heavy exercise, had no effect on the fast component, but decreased slow component of the oxygen uptake kinetics