162 



METABOLISM DURING WALKING. 



TABLE 44. Increments in various physiological factors due to walking on a level in experiments 



without food. (Values per minute.) Continued. 



ured by the kymograph tracings, was increased to not far from 3 

 liters per respiration or approximately three times that of the average 

 for the other subjects. The respiration-rates in the last two days were 

 undoubtedly abnormal, although E. L. F. reported that he was uncon- 

 scious of making any effort and was not aware of breathing other than 

 normally. He thought that once during the experiment his throat felt 

 rather dry, and stated that at one time he had been troubled with 

 asthma. 



PULMONARY VENTILATION DURING HORIZONTAL WALKING. 



The data in tables 8 to 12 show that the pulmonary ventilation for a 

 given speed was fairly uniform, also that there was no marked change 

 from period to period during the day. The percentage increases over 

 the average standing rate for the various speed groups are given for 



