70 
MUSCULAR WORK 
Table 89. — 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. 
Apr. 9, 1912. 
Work: 
8 h 56 m a.m.i 
9 18 a.m.2 
9 42 a.m.' 
10 21 a.m.« 
10 49 a.m.« 
min. sec. 
11 35 
11 29 
11 43 
10 06 
10 07 
c.c. 
1,198 
1,216 
1,241 
2,774 
2,200 
c.c. 
1,362 
1,378 
1,387 
2!252 
0.88 
.88 
.90 
"98 
110 
112 
116 
U70 
176 
20 
24 
24 
48 
36 
amp. 
1.1 
1.1 
1.1 
1.1 
1.1 
71.4 
71.4 
71.8 
128.9 
108.4 
1 Work was begun at 8 h 18 m a.m. Between 8 h 18 m a.m. and 8 h 56 m a.m. the subject rode at the average rate 
of 70 revolutions per minute. During the period the work was very easily done, in fact it could hardly 
be considered work. There was no perspiration. 
2 In the interval before this period the average speed was 71 revolutions per minute. There was slight perspira- 
tion during the period. 
8 In the interval before this period the average speed was 71 revolutions per minute. The perspiration was 
somewhat increased. 
* At 9 h 55 m a.m. the speed was increased so that between 9 h 55 m a.m. and 10 h 21 m a.m. the average rate was 
97 revolutions per minute. At the beginning of the period itself the subject lost the pedals, otherwise 
the speed during the period would have been greater. The work was hard and perspiration was profuse. 
6 Pulse-rate at the end of the period. 
6 In the interval before this period the average speed was 74 revolutions per minute. During the period 
perspiration was very profuse. The subject was practically "all in" at the end of 8 minutes, but kept 
at work. He looked very tired and exhausted. He was so tired that for about the first time sines he 
had worked here he could not go on and asked to be relieved from doing a third period at this resistance. 
He said that the rapid pace of the first high speed period had killed him. 
Table 90. — Results with t 
ubject 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. 
Apr. 16, 1912.1 
Lying: 2 
8 58 a.m 
9 20 a.m.* 
Work: 
10 h 08 m a.m. 6 
Lying: 
lib 22™ a.m.' 
12 23 p.m 
1 17 p.m 
2 23 p.m.' 
3 21 p.m 
4 20 p.m 
min. sec. 
10 38 
13 43 
14 27 
10 12 
10 11 
14 58 
15 59 
16 42 
16 52 
17 06 
16 20 
c.c. 
234 
207 
212 
2,382 
2,748 
213 
203 
203 
201 
208 
218 
c.c. 
249 
238 
250 
2,650 
2,857 
296 
248 
247 
255 
278 
268 
0.94 
.87 
.85 
.90 
.96 
.72 
.82 
.82 
.79 
.75 
.81 
66 
63 
64 
160 
162 
88 
76 
79 
70 
68 
70 
«20 
3 20 
»21 
36 
38 
«22 
'20 
'19 
'18 
»21 
»23 
am 
1. 
1. 
5 
5 
108.4 
116.6. 
1 This experiment was to a certain extent an attempt to learn the after-effect of work on the respiratory 
metabolism. 
2 The "lying" periods were carried out on another respiration apparatus located on the third floor of the 
laboratory. The work periods were as usual with the apparatus on the first floor. 
3 The respiration rate while the subject was on the couch was for the full period, as recorded by the spirometer. 
* The subject had considerable trouble just at the end of this period. He said that he had pain in his throat 
and difficulty in breathing. The kymograph record shows disturbance, the respiration becoming 
very irregular. 
5 Work was begun at 9 h 48 m a.m. Between 9 h 48 m a.m. and 10 h 08 m a.m. the average speed was 99 revolu- 
tions per minute. During the period the work wa3 easily done, except that the subject was troubled 
by a tendency for his feet to slip from the pedals, a3 just after starting he broke his toe-clips. He looked 
very well. 
6 Between the periods the average speed was 84 revolutions per minute. During the second period the work 
was still readily done. 
7 Work was finished at ll h 03 ra a.m. and the subject immediately went upstairs to the third floor and lay down 
on the couch. 
8 The subject said he was becoming very tired and stiff with lying. He was also very hungry. He moved 
his legs freely before the period started. 
