446 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. 



under these conditions. It may be said, however, that for the 7 cases 

 where the rates are given at both 30 and 120 seconds, the average at 

 30 seconds is 9 beats below the average for the same seven subjects at 

 their last walking rate, and that the rate at 30 seconds is already at a 

 level which is unchanged by standing 120 seconds. Two minutes of 

 sitting, which was a total of 4 minutes after the walking ceased, was 

 sufficient to bring the pulse down to the original sitting rate. 



The pulse records for Squad A in the walking test of February 3 

 appear in table 100. The details of this test were carried out in the 

 'same manner as those for the experiment on January 28. The sitting 

 and standing pulses were the averages of 2 to 5 counts, except for Moy 

 and Pea while sitting, and Gar, Moy, and Pea while standing in the 

 chamber, when only 1 count was made. The sitting pulse of Tom was 

 relatively high as compared with that for other members of the squad, 

 but this is in keeping with his sitting pulse for the evening previous as 

 shown in table 86. 



The average sitting pulse for the 11 members of the squad was 52. 

 With the subject standing outside the chamber, the pulse-rate was 

 greater in every instance except for Gar, with whom there was a drop 

 of 2 beats. The sitting pulse in his case is the average of counts taken 

 after 2, 3, 8, and 9 minutes and the standing pulse was counted after 

 1, 3, and 5 minutes of standing. This seems a very definite case of not 

 only an absence of increased rate for standing over that for sitting but 

 an actual, though small, drop in the pulse-rate. In the 8 observations 

 available for comparison the average pulse-rate rose 11 beats with 

 standing to a rate of 63 or 21 per cent above the sitting rate. The rate 

 with the subject standing on the treadmill varies somewhat from the 

 rate when he was standing outside the chamber, as was the case with 

 Squad B on January 28. In 4 cases there was an increase, but the 

 average fell to 60, a change similar to that observed for Squad B on 

 January 28. 



After 1 minute of walking, we find that, except for Can, the pulse- 

 rates all increased as compared to the rate while standing outside the 

 chamber. This would seem to indicate that Can's high pulse-rate 

 of 81, although an average of three counts, was due to some unusual 

 stimulus. The average pulse-rate for all of the subjects at the end of 

 one minute of walking was 72. This was an increase of 20 beats or 

 38 per cent above the sitting rate, and 12 beats or 20 per cent above 

 the standing rate inside the chamber. As was found with Squad B 

 on January 28, the pulse-rate fell after the initial rise due to the 

 stimulus of walking, and at the end of the second minute had dropped 

 by an average of 4 beats, and 5 beats by the end of the fourth minute. 

 The sixth minute showed a recovery of 2 beats. Subsequently, the 

 rate varied slightly, reaching at the close of 12 minutes an average of 

 72 for 9 subjects, and 73 at the end of 24 minutes for 8 subjects. This 



