Circulatory dynamics during exercise

Abstract

Physical activity is accompanied by one of the most natural for the body's adaptive responses, which requires a good interaction of all parts of the circulatory system. The fact that skeletal muscles make up to 40 % of body weight, and the intensity of their activity may vary within very wide limits, puts them in a special position compared with other organs. Therefore, in the process of evolution close relationship of muscle contraction and cardiovascular system has been developed creating, as far as possible, the conditions for maximal muscle blood flow, even at the expense of decreased blood flow in other organs and systems which is regulated by neural and humoral mechanisms.