CARDIAC PUMP FUNCTION FEATURES IN WOMEN SYSTEMATICALLY ENGAGED IN FITNESS AND THOSE AT THE INITIAL STAGE OF MUSCULAR TRAINING.

As our research showed, women being systematically engaged in fitness for one year had lower indices of heart rate and higher indices of stroke blood volume at rest, compared with women just starting their muscle training. In women who start muscle training the performance of the standardized muscular exercise in the form of the Harvard step test during the first two minutes results in the stroke volume and heart rate reaching the maximum values, and during the third minute - in a decrease in these indices. During the recovery period after the completion of the muscular exercises, the stroke volume and heart rate in this group of women do not decrease to the initial values within five minutes. The women of the experimental group engaged in fitness for one year, when performing a standardized muscular exercise, show a significantly higher response of the systolic blood volume than in the women of control group, and the frequency of the heartbeats undergoes less changes. After completing the muscular exercise these women have a significant decrease observed in the cardiac pump function of the heart and reach the level of the initial values by the fifth minute. Keywords: fitness, women, cardiac pump function, stroke volume, heart rate, systematic training