Figure 1

Plot of base excess, lactate,${\mathbf{V}}^{\dot{}}{\mathbf{CO}}_{\mathbf{2}}$and${\mathbf{V}}^{\dot{}}{\mathbf{CO}}_{\mathbf{2}}$. Simultaneous plot of lactate, base excess and gas exchange. This was obtained from a man exercising on a cycle ergometer. Samples at one minute intervals. Note that the base excess falls very much as the reciprocal of the lactate rise. Data from author’s laboratory.