104 A BIOMETRIC STUDY OF BASAL METABOLISM IN MAN. 



was about 10.5 as compared with 14 grams in a control group with 

 unrestricted diet. 



This lowering of the metabolism accompanying the assumption of 

 a thinner build is apparently opposed to the conclusions drawn above, 

 according to which thinner individuals show a higher metabolism. 

 Apparently, however, we have here, as in the fattening experiments of 

 Armsby and Fries and in the prolonged fast of 31 days, to do with the 

 special factor of rapid experimentally induced changes in the nutritional 

 level of the organism, and not with the relatively permanent differences 

 between fat and lean individuals. 



Determining the partial correlation between stature and total heat- 

 production in calories per day for constant body-weight and constant 

 age by the formula 



'aw ) ' as' ah """' ws' wh I ' aw\' as' wh~l ' ah' ws) 



aw 



and comparing the results with the gross correlations, r sk and the corre- 

 lation corrected for weight, ^r.*, and for age, a r th , we have the results 

 in table 35. 



TABLE 35. Comparison of gross correlation between stature and total heat-production and 

 partial correlations between stature and heat-production for constant weight, for constant 

 age, and for constant age and weight. 



The correlations for stature and heat-production are positive 

 throughout, even after correction has been made for both age and 

 weight. This fully substantiates the conclusion drawn above concern- 

 ing the existence of an independent physiological relationship between 

 stature and heat-production. The partial correlations for both age and 

 weight constant are in some cases higher and in some cases lower than 

 those in which weight only is corrected for. This shows the relatively 

 small influence of age on the correlation between stature and heat- 

 production. This influence is small, not because there is no relationship 



