DISCUSSION OF RESULTS. 75 



the results obtained for the four groups of experiments in the relaxed 

 position, i. e., one group with an uncontrolled diet and three with con- 

 trolled diets, and state that after the midday meal our subject showed 

 with considerable constancy an average heat-output of 1.45 calories 

 per minute. 



From the values obtained in the experiments with the subject stand- 

 ing after a heavy meal, basal values were computed for use in calculat- 

 ing the increment due to walking under the same conditions of diet. 

 Considering first the results obtained with an uncontrolled diet, we 

 averaged the values determined with the subject standing in the four 

 positions, i. e., relaxed and unsupported, relaxed with the hands resting 

 upon a staff, relaxed and leaning against a support, and the position of 

 "attention." The averages found were 274 c.c. for the carbon-dioxide 

 production, 317 c.c. for the oxygen consumption, and 1.55 calories for 

 the heat-output. These averages were used for basal values in calculat- 

 ing the increase in the metabolism due to walking for all of the experi- 

 ments following a heavy meal with an uncontrolled diet. 



The average value found on the days with a diet rich in protein, 

 namely, 1.36 calories, was used as a base-line for the walking experi- 

 ments on May 5 and 10, as the standing metabolism was not determined 

 on those days after the protein meal. A heavy protein meal was also 

 taken on April 6, 7, 23, and 24, and both the standing metabolism and 

 the metabolism during walking were determined. The standing values 

 for the individual days were therefore used as the basal values for com- 

 puting the increment due to walking. 



The average value for the carbohydrate days was not used as a basal 

 value for any of the walking experiments. For the walking experi- 

 ments following the midday meal on May 4, 6, and 11, an average of 

 the values obtained on April 25 and 27, i. e., 1.59 calories, was used as 

 a base-line in the computations, as the diets were considered to be more 

 nearly comparable on those days. As has previously been stated, this 

 basal value was also used for the walking experiment following the 

 carbohydrate breakfast on April 29. For the experiments on April 9, 

 10, 14, 15, 25, and 27, the standing metabolism determined for that 

 day was used as a basal value for the respective walking experiments 

 which were subsequently made on that day. 



On days when the diet was excessively rich in fat, the standing 

 metabolism was always determined before the walking experiment and 

 the values found were used as base-lines for the individual days, no use 

 being made of the average value. 



CONCLUSIONS REGARDING INFLUENCE OF FOOD UPON THE STANDING METABOLISM. 



The average value for the metabolism in the standing experiments 

 without food, as shown in table 10, was approximately 1.25 calories. 

 After the light morning meal, the metabolism was 1.43 calories (see 



