The Respiratory Gaseous Exchange After a Short Burst of Exercise.

Summary. Spirometric investigations of the respiratory gaseous exchange during resting, not basal, conditions and the recovery after a 70 yard sprint are reported. It is shown that around 10 minutes after connection with the spirometer fairly constant values for oxygen uptake and carbon dioxide output were obtained. These resting values were regained shortly after the exercise. The time used for elimination of excess carbon dioxide was longer and more constant, and showed greater interindividual differences than the time required for covering the oxygen debt. Well trained subjects with good results in track competitions showed the shortest recovery times. Trained subjects with fair to poor results had recovery times overlapping the recovery times of untrained subjects in good physical condition.