166 



METABOLISM DURING WALKING. 



J. H. G., E. L. F., and H. M. S., at similar speeds, the pulse-rate during 

 walking was lower than in the standing periods. The difference is in 

 many cases pronounced and implies that even with a trained subject 

 like E. D. B. it is possible to have a lower pulse during moderate walk- 

 ing than when standing. If, instead of using the average group values, 

 the pulse-rates on the days when both standing and horizontal walking 

 experiments were successively made are compared by plotting the con- 



10 



FIG. 12. Typical pulse-rate curves for E. D. B. and W. K. during standing and horizontal- 

 walking experiments. (Values per minute.) 



Speed of walking indicated in meters. Change of conditions shown by arrows and numbers: 1, 

 subject sitting; 2, standing; 3, walking. Records made in the experimental periods 

 represented by black points. Curve A, April 13; B, April 5; C, March 30; D, March 31; 

 E, April 4, 1916; F, March 18; G, March 17, 1915. 



tinuous pulse-readings during the forenoon, the relationship between 

 standing and walking values will be more clearly shown. A few curves 

 for W. K. and E. D. B. have been plotted in figure 12. Here it is 

 seen that whereas the pulse-rate tended to increase during the walking 

 periods, during the standing periods there was considerable variation ; 

 also, that as a rule the increase was marked when the subject changed 



