PHYSIOLOGICAL CHANGES IN TRANSITION. 



293 



TABLE 84. Respiration-rate and pulmonary ventilation of E. D. B. in successive periods of transition from 

 grade walking to standing. (Values per minute.) Continued. 



CHANGES IN PULMONARY VENTILATION. 



The response to the lessened demands of the body indicated by 

 changes in the pulmonary ventilation on the cessation of walking is 

 very noticeable and different in this respect from the results found for 

 the respiration-rate. In the first 12 seconds of standing, the pulmo- 

 nary ventilation fell in all but three instances and in amounts from 1 

 to 23 liters. This decrease continued throughout the first and second 

 minutes, and usually longer. By the end of the first minute the fall 



