Studies of Lung Capacities and Intrapulmonary Mixing: Normal Lung Capacities

Abstract

Two modified open-circuit methods have been used in measurements of total lung capacity and its subdivisions. Lung capacities are given for 12 normal men and 7 normal women. The data exhibit correlations between the components of lung capacity and body height, expressed by the coeff., b, in the equation, capacity = b (body height). A convenient graphic method is given for presenting both absolute and relative values of lung capacity and its subdivisions. By the use of such a diagram the relation of any set of observations to standard data can be perceived at once.