MECHANICAL EFFICIENCY OF THE HUMAN BODY 
129 
Table 119. — Efficiency of M. A. M.in respiration experiments with bicycle ergometer. 1 
[Basal values obtained in no-load experiments, without motor.] 
Oxygen intake per 
minute. 
Heat output per minute. 
Revolu- 
(a) 
Heat 
GO 
Effi- 
(«) 
Increase 
Date. 
Current. 
(a) 
(6) 
(c) 
(d) 
tions 
per 
equivalent 
of external 
ciency. 
g X100 
Work. 
No load 
Work. 
No load 
over no 
load 
without 
motor. 
minute. 
work per 
e 
without 
motor. 
without 
motor. 
minute. 
(c-J) 
1911. 
amp. 
e.c. 
c.c. 
cals. 
cals. 
cals. 
cals. 
p. ct. 
Dec. 14 
0.9 
1,332 
453 
6.57 
2.22 
4.35 
65 
1.16 
26.7 
1,150 
453 
5.74 
2.22 
3.52 
57 
.99 
28.1 
15 
0.9 
1,338 
453 
6.52 
2.22 
4.30 
62 
1.08 
25.1 
1,439 
453 
6.91 
2.22 
4.69 
60 
1.06 
22.6 
1,444 
453 
6.92 
2.22 
4.70 
62 
1.10 
23.4 
19 
0.9 
1,206 
453 
5.85 
2.22 
3.63 
60 
1.06 
29.2 
1,246 
453 
6.06 
2.22 
3.84 
60 
1.06 
27.6 
20 
0.9 
1,316 
453 
6.39 
2.22 
4.17 
60 
1.06 
25.4 
1,276 
453 
6.14 
2.22 
3.92 
58 
1.02 
26.0 
1,344 
453 
6.48 
2.22 
4.26 
59 
1.04 
24.4 
21 
0.9 
1,245 
453 
6.04 
2.22 
3.82 
60 
1.06 
27.8 
1,256 
453 
5.97 
2.22 
3.75 
60 
1.06 
28.3 
22 
0.9 
1,326 
453 
6.32 
2.22 
4.10 
58 
1.02 
24.9 
1,355 
453 
6.49 
2.22 
4.27 
58 
1.02 
23.9 
1912 
Jan. 1 
0.9 
1,160 
453 
5.71 
2.22 
3.49 
60 
1.06 
30.4 
1,162 
453 
5.75 
2.22 
3.53 
60 
1.06 
30.0 
2 
0.9 
1,254 
453 
6.05 
2.22 
3.83 
60 
1.06 
27.7 
1,244 
453 
6.04 
2.22 
3.82 
60 
1.06 
27.8 
3 
0.9 
1,356 
453 
6.37 
2.22 
4.15 
60 
1.06 
25.5 
1,283 
453 
6.17 
2.22 
3.95 
60 
1.06 
26.8 
1,248 
453 
5.99 
2.22 
3.77 
60 
1.06 
28.1 
8 
0.9 
1,959 
744 
9.60 
3.59 
6.01 
86 
1.44 
24.0 
1,989 
904 
9.91 
4.34 
5.57 
95 
1.55 
27.8 
9 
0.9 
1.877 
744 
9.04 
3.59 
5.45 
86 
1.45 
26.6 
1,976 
817 
9.63 
3.89 
5.74 
89 
1.50 
26.1 
10 
0.9 
2,092 
904 
10.18 
4.34 
5.84 
96 
1.56 
26.7 
2,034 
904 
10.04 
4.34 
5.70 
95 
1.56 
27.4 
12 
0.9 
2,210 
963 
10.88 
4.61 
6.27 
102 
1.63 
26.0 
2,293 
963 
11.21 
4.61 
6.60 
103 
1.64 
24.9 
15 
0.9 
2,091 
904 
10.30 
4.34 
5.96 
94 
1.54 
25.8 
16 
0.9 
2.131 
817 
10.32 
3.89 
6.43 
91 
1.52 
23.6 
17 
0.9 
2,055 
963 
10.15 
4.61 
5.54 
101 
1.62 
29.2 
2,143 
817 
10.32 
3.89 
6.43 
91 
1.52 
23.6 
18 
0.9 
1,977 
744 
9.32 
3.59 
5.73 
85 
1.44 
25.1 
»19 
0.9 
2,395 
963 
11.35 
4.61 
6.74 
104 
1.65 
24.5 
2,164 
744 
10.14 
3.59 
6.55 
88 
1.47 
22.4 
Feb. 23 
0.95 
1,595 
817 
8.03 
3.89 
4.14 
88 
1.24 
30.0 
26 
0.95 
1,485 
904 
7.49 
4.34 
3.15 
94 
1.29 
41.0 
1.589 
817 
7.61 
3.89 
3.72 
93 
1.28 
34.4 
1,535 
744 
7.48 
3.59 
3.89 
87 
1.24 
31.9 
27 
0.95 
1,490 
744 
7.17 
3.59 
3.58 
83 
1.20 
33.5 
1,418 
744 
6.86 
3.59 
3.27 
82 
1.18 
36.1 
1,444 
744 
7.08 
3.59 
3.49 
86 
1.22 
35.0 
29 
0.95 
1,785 
963 
8.72 
4.61 
4.11 
102 
1.35 
32.8 
1,907 
963 
9.20 
4.61 
4.59 
104 
1.35 
29.4 
Jan. 24 
1.5 
2,040 
817 
9.97 
3.89 
6.08 
90 
1.94 
31.9 
25 
1.5 
2,303 
963 
11.29 
4.61 
6.68 
102 
2.12 
31.7 
26 
1.5 
2,167 
817 
10.43 
3.89 
6.54 
91 
1.95 
29.8 
31 
1.5 
2,115 
744 
10.29 
3.59 
6.70 
87 
1.89 
28.2 
Feb. 1 
1.5 
2,010 
817 
9.85 
3.89 
5.96 
90 
1.94 
32.6 
2 
1.5 
2,433 
963 
11.83 
4.61 
7.22 
104 
2.16 
29.9 
2,283 
963 
11.30 
4.61 
6.69 
99 
2.06 
30.8 
7 
1.5 
1,976 
817 
9.80 
3.89 
5.91 
90 
1.94 
32.8 
8 
1.5 
2,146 
904 
10.40 
4.34 
6.06 
94 
1.99 
32.8 
9 
1.5 
2,342 
963 
11.19 
4.61 
6.58 
100 
2.08 
31.6 
2,073 
817 
10.03 
3.89 
6.14 
92 
1.97 
32.1 
14 
1.5 
2,009 
904 
9.99 
4.34 
5.65 
95 
2.02 
35.8 
15 
1.5 
2,004 
817 
9.91 
3.89 
6.02 
90 
1.93 
32.1 
16 
Li 
2,036 
963 
10.10 
4.61 
5.49 
97 
2.05 
37.3 
2,206 
904 
10.59 
4.34 
6.25 
95 
2.02 
32.3 
23 
1.5 
1,955 
817 
9.43 
3.89 
5.54 
88 
1.91 
34.5 
2,265 
963 
11.35 
4.61 
6.74 
102 
2.11 
31.3 
26 
1.5 
1,917 
817 
9.50 
3.89 
5.61 
91 
1.96 
34.9 
1,969 
817 
9.67 
3.89 
5.78 
88 
1.91 
33.0 
27 
1.5 
1,828 
817 
9.13 
3.89 
5.24 
88 
1.91 
36.5 
1,858 
744 
9.20 
3.59 
5.61 
87 
1.89 
33.7 
1,850 
817 
9.25 
3.89 
5.36 
89 
1.91 
35.6 
1 Ergometer I was used for all experiments up to Jan. 19, 1912, inclusive; ergometer II was used for the 
experiments subsequent to that date. 
