PHYSIOLOGY: ANDERSON AND LUSK 
387 
glucose had been administered immediately before the experiment 
began. These facts appear in the following table: 
The interrelation between diet and body condition and the energy production during mechanical 
work in the dog 
CONDITIONS 
NUMBER OF EX- 
PERIMENTS 
WEIGHT IN KtLO- 
GRAMS 
CALORIES OF 
METABOLISM 
RESPIRATORY 
QUOTIENT 
WORK I 
PER ] 
N DIS- 
lOUR 
CALORIES ABOVE 
THE BASAL PER 
1000 METERS 
ENERGY IN KILO- 
GRAMS TO MOVE 
1 KGM. 1 METER 
1 
8.0 
17.6 
0.84 
1 
8.3 
60.7 
0.78 
2 .48 
3925 
11.0 
0.585 
Work, glucose 70 grams 
2 
8.4 
63.4 
1.00 
2.51 
4170 
11.2 
0.566 
4 
9.1 
17.2 
0.85 
Work, no food 
4 
9.2 
76.8 
0.80 
2.95 
4760 
12.4 
0.578 
Work + glucose, 70 grams 
2 
9.6 
76.6 
0.94 
2.95 
4750 
12.5 
0.550 
Work + glucose, 100 grams .... 
1 
9.7 
76.4 
0.95 
2.94 
4740 
12.5 
0.550 
Rest + glucose, 70 grams 
2 
9.3 
20.7 
1.05 
Work + meat, 750 grams 
1 
9.6 
92.4 
0.80 
2 .91 
4700 
16.0 
0.708 
Rest + meat, 750 grams 
1 
9.6 
29.7 
0.83 
Work + alanin, 20 grams 
1 
9.3 
82.0 
0.78 
2.96 
4780 
13.6 
0.620 
Rest + alanin, 20 grams 
1 
9.4 
21.1 
0.84 
Fasting 
Day 3 + work 
8.75 
72.4 
0.72 
2.97 
4800 
11.7 
0.569 
4 
8.6 
16.1 
0.73 
8.55 
70.1 
0.73 
2.94 
4750 
11.4 
0.567 
7 
8.35 
15.2 
0.74 
8 
8.10 
14.2 
0.71 
8.10 
70.6 
0.72 
3.11 
5020 
11.2 
0.588 
13 
7.60 
12.4 
0.74 
7.60 
62.5 
0.72 
2.92 
4710 
10.6 
0.595 
15 
7.45 
13.0 
0.73 
In a second series of experiments begun after an interval of six weeks, 
during which time the dog had added a kilogram to his body weight, 
it was found that when he moved at the rate of 2.95 miles (4.75 km.) 
per hour 12.4 calories were required to propel his body 1000 meters if 
the dog had been given no food in the morning, and 12.5 calories were 
required when 70 or even 100 grams of glucose had been administered. 
The rise in the respiratory quotient demonstrates the influx of glucose 
molecules for use in the cells for the production of power, and yet this 
influx caused no increase whatever in the heat production. 
On the eighth day of fasting, when the body weight had fallen to 8.1 
