Abstract des Autors

The problem of change in cardiac rate at increasing intensity of run in view of various methods of variation of running loads is insufficiently studied. From this point of view it is advisable to study the dynamics of recovery of heart work to determine optimal rest pauses between reps at running load on long distances with varied speed. The present study is devoted to allocation of the optimal running speed and duration of rest pauses after loads. The purpose of the research was to study the dynamics of development and recovery of pulse responses during and after work depending on running loads of various characters. The research methods consisted of observation of the dynamics of intensity of running load and cardiac rate, determined by registration of heart biopotentials on a single channel ECG recorder of 0-63 type. Electrocardiograms were registered at rest, during muscle work and after finishing it at sitting position. Proceeding from the studies, effectiveness of recovery of heart work after run at various speed depends on the character of load. Statistically significant differences in the group indices were revealed on the 1st and 3rd minute of recovery after running at 5,5 m/s, proving that the processes of athletes' body adaptation for endurance muscle work by the principle of multi-directional variation of running distances occurred on the higher level compared to the testees using another regime of variation of length and speed of overcoming of distances. Verf.-Referat