64 
MUSCULAR WORK 
Table 74. — 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. 
Mar. 6, 1912. 
Lying : « 
8M7™ a.m 
9 25 a.m 
9 47 a.m 
Work: 
10b 14m a . m .I 
10 54 a.m.« 
Lying: 
Ilk 15-" a.m.' 
11 37 a.m 
11 58 a.m 
12 20 p.m 
min. sec. 
13 05 
13 42 
13 48 
10 22 
10 12 
14 07 
14 10 
14 45 
15 46 
c.c. 
235 
229 
225 
2,751 
2,537 
251 
225 
220 
224 
c.c. 
261 
257 
258 
2,976 
2,685 
333 
316 
298 
293 
0.90 
.89 
.87 
.93 
.95 
.76 
.71 
.74 
.77 
64 
64 
62 
160 
177 
95 
88 
88 
81 
*21 
*21 
J 22 
36 
40 
»28 
2 24 
J 24 
*22 
amp. 
1.5 
1.5 
127.8 
113.3 
1 The "lying" periods were run on another respiration apparatus located on the third floor of the laboratory. 
The ventilation of the lungs was measured in these periods. After the first three periods the subject 
went downstairs to the first floor for the work experiment. He returned to the third floor at the com- 
pletion of the work periods. 
2 The respiration rate while the subject was on the couch was for the full period, as recorded by the spirometer. 
3 Work was begun at 10 h 04 m a.m. Between 10 h 04 m a.m. and 10 h 14™ a.m. the average speed was 105 revo- 
lutions per minute. There was very much perspiration and flushing. The plan was for the subject 
to work as rapidly and as hard as he could. 
4 Between the two work-periods the average speed was 115 revolutions per minute. During the second period 
the work went well. At the end of 7.5 minutes, however, the subject was somewhat exhausted and 
had to ride more slowly. He increased his speed again later, however. He was very much flushed 
and perspired profusely. 
6 Work was finished at ll h 05 m a.m. He immediately changed to the apparatus on the third floor. He was 
later reported as having a "jump" in his leg, i. e., a "tonic spasm." 
Table 75. — Results with subject M. A.M. {without food). {Ergometer II.) 
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. 
Mar. 11, 1912.1 
Lying: 
gh 44m a .m. 2 
9 06 a.m 
Sitting: « 
9 h 45™ a.m. 4 
10 23 a.m 
No load with motor: 
10 h 55™ a.m.* 
11 14 a.m.« 
Work: 
Hh 46m a.m. 7 
12 05 p.m.» 
min. sec. 
14 46 
16 14 
13 26 
10 25 
10 04 
11 45 
10 23 
10 51 
c.c. 
218 
212 
306 
258 
703 
634 
2,066 
2,057 
c.c. 
245 
248 
395 
376 
742 
744 
2,299 
2,220 
0.89 
.85 
.78 
.69 
.95 
.85 
.90 
.93 
60 
60 
84 
81 
8 156 
"150 
20 
21 
20 
20 
amp. 
1.5 
1.5 
103.7 
101.0 
102.2 
100.7 
1 See table 77 for experiment on March 8, 1912. 
2 The subject lay down at 8 h 05™ a.m. The pulse-rate at 8 h 25™ a.m. was 62; at 8 b 28™ a.m., 60; at 8 h 40™ 
a.m., 60. 
s The subject sat on the ordinary seat with his feet on unsupported pedals, l. e., with the disk perfectly free. 
* From 9 h 27™ a.m. to 9 h 39™ a.m. the subject sat with feet resting on the forks. He then lowered his feet 
to the pedals. He found that sitting still in this position wa3 a constant strain. 
5 The subject began riding at 10 h 37™ a.m., the machine being driven by a motor. The belt slipped at 10 h 
52™ a.m. The pulse-rate 15 seconds after the stopping of work due to the slipping of the belt was 
only 84. • .. 
« Between the two "no-load" periods the average speed was 72 (?) revolutions per minute. Soon after the 
start of the period (75 seconds) the belt slipped off. The machine was stopped completely, the belt was 
replaced and the machine restarted. 
7 Work was begun at ll h 32™ a.m. with the current at 1.5 amperes. Between ll h 32™ a.m. and ll h 46™ a.m 
the average speed was 97 revolutions per minute. 
8 Pulse-rate at the end of the period. 
» In the interval before this period the subject rode at the average rate of 96 revolutions per minute. 
