48 
MUSCULAR WORK 
Table 37. — Results with subject M. A. M. {without food) . 
Date and time. 
Duration. 
Carbon 
dioxide 
eliminated 
per minute. 
Oxygen 
absorbed 
per 
minute. 
Respira- 
tory 
quotient. 
Aver- 
age 
pulse- 
rate. 
Average 
respira- 
tion-rate. 
Cur- 
rent. 
Revolu- 
tions per 
minute. 
Dec. 14, 1911. 
Lying: 
8 h 50" a.m. 1 
9 14 a.m 
9 37 a.m 
Work: 
10 h 29" a.m.2 
10 55 a.m.' 
min. sec. 
14 42 
14 43 
14 50 
9 52 
10 05 
10 04 
ex. 
217 
214 
216 
1,088 
1,224 
1,112 
c.c. 
241 
237 
235 
1,332 
1,149 
0.90 
.91 
.92 
.92 
.97 
64 
63 
64 
134 
122 
122 
24 
24 
24 
23 
23 
23 
amp. 
0.9 
0.9 
0.9 
68 
65 
57 
1 The subject lay for 40 minutes before the period. 
2 The metronome was used to keep the speed at about 60 per minute. Work was begun at 10 h 07 m a.m. The 
subject put his mouth to the mouthpiece at 10 h 22 m a.m. The pulse-rate without the mouthpiece was 
at 10 h 14" a.m., 112; at 10 h 20" a.m. and 10 h 22m a . m-i H6. When the subject's mouth was on the 
mouthpiece, the pulse-rate was at 10 h 24 m a.m., 124; at 10 h 26" a.m., 120. During the preliminary 22 
minutes the average speed was about 63 revolutions per minute. The level of the mouthpiece was 
changed to suit subject's convenience. The subject had to stop at the end of 10 minutes. He was 
crouching in his seat. The oxygen measurement was lost. Perspiration was pouring from the sub- 
ject during the period. He felt that the stethoscope harness was pressing on him. 
3 The subject had changed to a more upright position and was therefore much more comfortable. He was 
cooler, and feeling better. His face was bathed in perspiration. 
* The subject stopped work for 2 minutes between periods. The average speed for the actual riding in the 
interval was about 62 revolutions per minute. 
Table 38. — Results with subject M. A. M. (without food) . 
Date and time. 
Duration. 
Carbon 
dioxide 
eliminated 
per minute. 
Oxygen 
absorbed 
per 
minute. 
Respira- 
tory 
quotient. 
Aver- 
age 
pulse- 
rate. 
Average 
respira- 
tion-rate. 
Cur- 
rent. 
Revolu- 
tions per 
minute. 
Dec. 16, 1911. 
Lying: 
8b 29" a.m.i 
8 53 a.m 
9 16 a.m 
Work: 
10>> 10" a.m.2 
10 29 a.m.* 
10 47 a.m.* 
Lying: 
ll h 15" a.m. 8 
11 39 a.m 
min. sec. 
14 30 
14 37 
14 57 
10 10 
10 09 
10 10 
14 21 
14 17 
c.c. 
202 
205 
194 
1,160 
1,163 
1,147 
215 
200 
c.c. 
254 
252 
245 
1,338 
1,439 
1,444 
255 
252 
0.80 
.81 
.80 
.87 
.81 
.80 
.84 
.80 
64 
64 
64 
122 
126 
130 
71 
04 
22 
24 
22 
19 
22 
27 
22 
19 
amp. 
0.9 
0.9 
0.9 
«62 
»60 
8 62 
1 The subject said at the beginning of the experiment that he did not feel very well. He had some gastric 
disturbance. He was lying on the couch 29 minutes before the period began. The pulse-rate at 
8 h 05" a.m., 8 h 10" a.m., 8 h 15" a.m., and 8 h 22" a.m. was 64. 
2 The subject was not physically inclined to work. He began work at 9 h 42" a.m. His pulse without the 
mouthpiece was 116; with the mouthpiece it was 110 and 112. Perspiration was profuse. Loosening 
of the subject's clothing gave him relief. Preliminary to the period the average speed was about 59 
revolutions per minute. 
3 Approximate. The metronome was used to regulate the speed. 
* The subject rode between periods at the average rate of about 59 revolutions per minute, sitting up to ride 
as is usual between periods. He found that this gave him relief. He volunteered the information 
that he sometimes found expiration difficult when the rubber cap on the tension-equalizer was too full. 
Perspiration began at 10 h 35" a.m. 
6 The average speed between periods was about 65 revolutions per minute. The subject's breathing was 
labored during work, and he looked exhausted when the period ended and breathed badly. Perspira- 
tion began at 10 h 53" a.m. 
• The subject's change to the couch was made as rapidly as possible. He took in saliva from the mouthpiece 
when the cock was again turned and made efforts to swallow. Respiration was less shallow than usual. 
The period began about 12 minutes after the work was finished. The subject was flushed but other- 
wise was normal in appearance. 
