108 METABOLISM DURING WALKING. 



experience, the average rates of 95 and 91 obtained on the other two 

 days indicate that the subject had a normally high pulse-rate for the 

 standing position. It was also noted that the pulse-rate of this subject 

 while he was in the lying position was much higher than that of the other 

 subjects. (See table 17, p. 91.) The average rate for three days of 

 experimenting with him was 98. Excluding the high pulse-rate of the 

 first day, it was 93. The change in the rate during the succeeding 

 periods of the day is, on the whole, the reverse of that shown by T. H. H. 

 and indicates that the psychical effect passed away more rapidly than 

 the physical effort of standing increased the heart-rate, if, indeed, there 

 were such an effect. This may be questioned in view of the decrease 

 in the pulse-rate. H. R. R. was of a nervous type, while T. H. H. 

 was phlegmatic. 



The first record with W. K. was made on March 11, 1915, when an 

 average pulse-rate of 79 was obtained. This man had acted as subject 

 for several days previous to this date. Consequently, if there had 

 been any unusual stimulation on earlier days due to the novelty of the 

 test, it had all disappeared when the first pulse-record was made, 

 since the subsequent measurements with the subject standing, even 

 to the close of experimenting with this subject in June, 1915, approxi- 

 mated this figure. This approximate uniformity may be seen by the 

 detailed pulse-rate records given for W. K. in table 27, page 111. 

 From table 5, we see that the highest period rate found during the 

 standing experiments was 87 in the first period on March 17 and the 

 fourth period of June 1 ; the lowest value was 73 in the second period 

 on May 29. The daily average varied from 74 on May 29 and June 

 4 to 85 on June 1. There is no clear-cut evidence that the pulse-rate 

 increased as the standing continued. On March 17 it tended to fall; 

 on March 18 it had a tendency to increase; on the other days the 

 changes were irregular and insignificant. The average standing pulse 

 for this subject was 79 beats. 



Owing to our difficulties with the oscillograph, records were not 

 obtained with E. D. B. until November 29, 1915. At that time he had 

 become fairly accustomed to the conditions, so that the novelty of the 

 exercise played no role. The illustrative pulse-records in figure 8 

 (p. 34) are all for this man. Electro-cardiograms were obtained with 

 E. D. B., standing, on 43 days. (See fig. 9, p. 98, and table 6, p. 46.) 

 These records show pulse-rates ranging from 52 on February 19 to 96 

 in the first period on February 1. The low rate of February 19 is the 

 average of three 1-mimite records, taken four minutes apart, of 50, 

 52, and 53. It seems evident, therefore, that the value of 52 correctly 

 represents the average standing pulse for this day and that the rate 

 was lower on this date than on others. This is the lowest average 

 pulse-rate of a man standing that we have observed, save in the case 

 of a few subjects on prolonged low diet. 1 The high rate of 96 in the 



Benedict, Miles, Roth, and Smith, Carnegie Inat. Wash. Pub. No. 280, 1919, p. 413. 



