42 METABOLISM DURING WALKING. 



T. H. H. Born September 2, 1886; age 29 years; height 171 cm.; nude 

 weight 54.5 kg.; body-surface 1.63 sq. meters. Occupation, gardener. An 

 Englishman, but recently arrived in this country, and without a situation. 

 Served as subject but a few weeks, as he secured permanent work at his 

 regular occupation. Slow and awkward in movements, but showed a desire 

 to cooperate in the experiments. 



W. K. Born December 24, 1885; age 29 years; height 162 cm.; nude weight 

 49.2 kg.; body-surface 1.51 sq. meters. No trade, but had served as waiter 

 in a restaurant. Satisfactory and reliable; during a part of the research the 

 experiments were made with this subject only, as it was difficult to find 

 suitable men. Stocky, well-built, easy walker, possessed a considerable 

 amount of grit, and fulfilled each requirement to the best of his ability. 



E. D. B Born October 23, 1892; age 23 years; height 173 cm.; nude weight 

 57 kg.; body-surface 1.68 sq. meters. 1 Quiet and phlegmatic. Had lived in a 

 country town, and though not athletic, was well-built and accustomed to 

 walking. After a few months' service, he suffered from a strained tendon in his 

 foot; his use as a subject was accordingly discontinued until the lameness 

 disappeared (January 6 to 30, 1916, inclusive). Examined on May 2, 1916, 

 by a physician, who reported that "the heart sounds were of good quality; 

 no murmurs heard; heart entirely normal." 



While E. D. B. was incapacitated, the standing and walking tests 

 were continued by using volunteer subjects from the Laboratory staff, 

 all of whom had assisted in the experiments. These men were : 



J. H. G. Born April 21, 1895; age 20 years; height 185 cm.; nude weight 

 68.0 kg.; body-surface 1.89 sq. meters. 



E. L. F. Born November 27, 1892; age 23 years; height 171 cm.; nude 

 weight 70.4 kg.; body-surface 1.82 sq. meters. 



H. M. S. Born August 31, 1868; age 48 years; height 180 cm.; nude weight 

 60.4 kg.; body-surface 1.78 sq. meters. 



STATISTICS OF EXPERIMENTS. 



The statistical data obtained in this study appear in chronological 

 order for each subject in tables 3 to 16a. Metabolism measurements 

 were made on some 225 days in all, with a total of approximately 1,300 

 experimental periods. These experiments were all carried out in the 

 forenoon, with the subject in the post-absorptive condition, i. e., ap- 

 proximately 12 hours after the last meal. The experimental periods 

 were usually about 12 minutes in duration, except for the severer 

 grades of walking, when the time was reduced to 10 minutes and, in a 

 few instances, to 8 minutes. 



All of the results secured are given in the tables and represent the 

 gross outlay in the energy output. With the exception of one day when 

 the subject was psychically stimulated, no figures were excluded from 

 the averages except in case of manifest error. Such exclusions have 

 been indicated by inclosing the figures in parentheses. The averages 

 for the different days are the averages of the results obtained for the 



J For additional data regarding surface area, see paper by Benedict (Am. Journ. Physiol., 1916, 

 41, p. 275) in which photograph, silhouettes, and measurements are given of E. D. B. as Sub- 

 ject 7. 



