242 



Metabolism of Healthy Max. 



asleep. As a matter of fact, from frequent observations of the pulse-rate when 

 the subject is lying awake and when lying asleep, we find an increased heart-beat 

 and a somewhat higher respiration-rate. It is to be expected, therefore, that the 

 metabolism would be higher. Unfortunately, in the experiments of Johansson 1 

 no information whatever is given in regard to the pulse-rate, and we have no 



Table 101. Metabolism in experiments while lying awake compared with 



metabolism while lying asleep. 



1 A. H. M., C. R. Y., and J. H. K. were not included in the averages. 



means of comparing it. It would seem, however, that with increased pulse and 

 respiration rates, there would be an accompanying increase in muscular tonus 

 which would of necessity result in an increased metabolism. In general, then, 

 we may state that the metabolism when lying awake is from 8 to 10 per cent 

 greater than with the same subject lying asleep. This is obviously of special im- 

 portance in considering the calorific requirement of bedridden patients. 



1 Johansson, loc. cit. 



