On the Variation of DLCO with Increasing Oxygen Uptake during Exercise in Healthy Ordinarily Untrained Young Men and Women

Abstract Freyschuss, U. and A. Holmgren. On the variation of Dl co with increasing oxygen uptake in healthy, ordinarily untrained young men and women . Acta physiol scand. 1965. 65 , 193–206. ‐ Dl co , was measured at rest in supine position and during steady state exercise in sitting position at increasing oxygen uptake in 9 women and 9 men using the steady state technique. Dl CO , was found to increase on transition from supine rest to sitting work increase in 4 of 5 men and 1 of 8 women. In 7 women there were only minor changes. On increasing the work load, Dl CO , was found to reach an approximately constant level at a heart rate of 120 beats per minute. This value for Dl CO may be called a true “maximal” Dl CO and was found to be significantly correlated to various measures of body size, the size of the cardiovascular system and the size of the lungs.