TABLE XII
Rations Varied for Sex and Age
| VARIATIONS OF SEX AND AGE | Proteins | Fats | Carbohydrates | Energy in Calories | ||
| Low | High | Low | High | |||
| Children, two to six | 36 | 70 | 40 | 250 | 325 | 1520-1956 |
| Children, six to fifteen | 50 | 75 | 45 | 325 | 350 | 1923-2123 |
| Women with light exercise | 50 | 80 | 80 | 300 | 330 | 2272 |
| Women at moderate work | 60 | 92 | 80 | 400 | 432 | 2720 |
| Aged women | 50 | 80 | 50 | 270 | 300 | 1870 |
| Aged men | 50 | 100 | 400 | 300 | 350 | 2258 |
The unit of measurement for the calories of energy is the amount of heat required to raise the temperature of one kilogram of water from zero to 1° centigrade or 4° Fahrenheit.
In estimating the number of calories of energy given off by the different foods, Dr. Hall represents
| 1 | gram of | carbohydrates | as | 4.0 | calories |
| 1 | ” ” | fats | ” | 9.4 | ” |
| 1 | ” ” | proteins | ” | 4.0 | ” |
To determine the relative energy which a food represents, it is only necessary to multiply the number of grams of protein in that food by 4, the fat by 9.4, and the carbohydrates by 4, and add the results.
Thus according to the food required for the average man at light work given on page [225]:
| 106.80 | grams of | proteins | × | 4 = | 427.20 calories of energy |
| 57.97 | ” ” | fat | × | 9.4 = | 544.94 ” ” ” |
| 398.84 | ” ” | carbohydrates | × | 4 = | 1595.36 ” ” ” |
| 2567.51 = the calories of energy required for the average man at light work. |
TABLE XIII
The following gives a balanced supply for a day according to the preceding tabulation: