Abstract

Oxygen intake, pulmonary diffusing capacity (DL), pulmonary membrane diffusing capacity (DM) and pulmonary capillary blood volume (Vc) were measured at rest and during maximal and submaximal work, with Filleys steady technique on 3 athletes (middle distance runners) and 5 non - athletes. The results in this study were as follows: (1) At rest, DL,DM, Vc in athletes were 28.3 +/- 3.7 ml/min/mmHg, 52.2 +/- 5.3 ml/min/mmHg, 124.1 +/- 41.8 ml respectively, and in non - athletes were 25.6 +/- 1.oml/min/mmHg, 47.5+7,5 ml/min/mmHg, 114.7+/-25.9 ml respectively. (2) During submaximal works, DL,DM and Vc increased together with oxygen intake. At the same level of VO2 athletes showed greater DL,DM and Vc than those of non - athletes. Contact time exponentially decreased as oxygen intake increased. (3) At maximal work, athletes showed significantly greater max VO2 Dl, DM and Vc than those of non athletes. But, contavt time of athletes was not significantly greater than of non - athletes. (4) The results demonstrate that a higher DL,DM and Vc is accrompanied by a higher aerobic capacity, a larger ventilatory capacity, and a larger cardias output. Verf.-Referat