78 A BIOMETRIC STUDY OF BASAL METABOLISM IN MAN. 



Correction for age has not materially changed the values of the 

 constants. 



Summarizing the results of these various calculations we note that 

 in male and female infants and in our male adults taken as a class there 

 is a suggestion of positive correlation between stature and pulse-rate, 

 i.e., of an increase of pulse-rate with stature. In the adults this is, 

 however, largely due to the athletes and the vegetarians in the original 

 series. The Gephart and Du Bois selection of males and the female 

 series suggest a negative relationship between stature and pulse-rate. 

 Thus the results for infants and adults, if either are really biologically 

 significant, indicate a different relationship at the two ages. 



As far as the available data justify conclusions concerning the 

 problem, they seem to indicate that there is only a very slight, if any, 

 interdependence between stature and minimum or basal pulse-rate in 

 man. 



3. PULSE-RATE AND GASEOUS EXCHANGE. 



Since it is well known that pulse-rate and gaseous exchange are 

 closely related in the individual, it seems desirable to determine 

 whether in a series of individuals at complete muscular repose and in 

 the post-absorptive state a correlation between pulse-rate and gaseous 

 exchange and between pulse-rate and total heat-production will be 

 found to exist. 



TABLE 19. Correlation between puhe-rate and gaseous exchange. 



Table 19 gives the correlations between pulse-rate and oxygen con- 

 sumption and pulse-rate and carbon-dioxide production, and the differ- 

 ences in these correlations, for the various series with which we have 

 worked. The results are reasonably consistent in indicating a low but 

 significant positive correlation between pulse-rate and oxygen con- 

 sumption and pulse-rate and carbon-dioxide excretion, larger gaseous 

 exchange being associated with more rapid pulse-rate. 



