Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man: an experimental studyChittenden, R. H. (Russell Henry)
Science
Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man: an experimental study
Chittenden, R. H. (Russell Henry)
Metabolism; Nutrition
| 10 | 69.7 | 1110 | 1015 | 6.36 | | |
| 11 | | 1410 | 1017 | 5.95 | | |
| 12 | 69.1 | 1510 | 1014 | 6.07 | | |
| 13 | | 1100 | 1016 | 5.94 | | |
| 14 | | 1090 | 1018 | 5.43 | | |
| 15 | | 1380 | 1017 | 6.46 | | |
| 16 | 70.0 | 1760 | 1014 | 6.55 | | |
| 17 | | 1755 | 1013 | 6.63 | | |
| 18 | | 1075 | 1026 | 6.06 | | |
| 19 | 70.0 | 1285 | 1016 | 6.55 | | |
| 20 | | 585 | 1022 | 5.44 | | |
| 21 | | 595 | 1024 | 6.93 | | |
| 22 | | 655 | 1023 | 7.07 | | |
| 23 | | 1230 | 1015 | 7.45 | | |
+-----------+-------+-------+------+-----------+-----------+-----------+
|Daily aver. from | | | | | |
| Nov. 10, 1903. | 1001 | 1020 | 6.53 | 0.419 | 1.46 |
+-------------------+-------+------+-----------+-----------+-----------+
From November 10, 1903, to June 23, 1904, a period of about seven months
and a half, the average daily excretion of nitrogen through the urine
was 6.53 grams. In other words, throughout this long period the average
daily amount of proteid matter metabolized was 40.8 grams, only a
little more than one-third the amount called for by the Voit standard.
Until February, the body-weight gradually fell, but from the early part
of February until the end of the experiment the body-weight remained
practically stationary at 70 kilos. Dr. Mendel, however, from the
necessities of his daily work in the laboratory was compelled to a much
greater degree of physical activity than the subject of the preceding
experiment, and consequently required a larger amount of non-nitrogenous
food than the latter. Further, owing to his greater physical activity and
the necessary variations in this daily activity, it was not so easy at
first to attain equilibrium.
Public-domain text, read in full here on John Shaqi.
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