| Abstract: | The dynamics of regulation of the pulmonary ventilation during the transition from rest to exertion of different power (from 200 to 1000 kg·m/min) was analyzed by means of a mathematical model in experiments on healthy subjects who varied in their standard of training. The half-period of the transition process for ventilation was found to increase initially with an increase in the power of exertion. Later, when the  critical power was reached, it began to fall. In healthy untrained subjects the critical point was at the level of approximately 500 kg·m/min, whereas in trained athletes the point was shifted to the region of more strenuous exertion.Department of Experimental and Clinical Physiology, A. V. Vishnevskii Institute of Surgery, Academy of Medical Sciences of the USSR, Moscow. (Presented by Academician of the Academy of Medical Sciences of the USSR V. N. Chernigovskii.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 88, No. 8, pp. 131–133, August, 1979. |
