Opening the text

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

Name: Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man: an experimental study
Author: Chittenden, R. H. (Russell Henry)

Chittenden, R. H. (Russell Henry)

Metabolism; Nutrition

The diminished amount of fæcal discharge means naturally not only a
smaller intake of food, but implies also a greater utilization of the
food ingested, and as a result the increased percentage of nitrogen
in the discharges shows itself because of the relatively larger
preponderance of nitrogenous secretions from the intestinal tract.

The latter part of September, 1903, Dr. Underhill attempted to return to
his original methods of living, but found difficulty in consuming the
daily quantities of food he had formerly been in the habit of taking.
From October 11 to October 25, 1903, however, he raised the consumption
of proteid food to such a degree that the nitrogen excretion through the
urine averaged from 10 to 12 grams per day. After this date he fell back
to the lower proteid intake, and from that period to June 23, 1904, he
maintained a low level of proteid metabolism without detriment to his
bodily vigor, and, as he believes, with a distinct betterment.

The following tables of results extending from October 11, 1903, to June
23, 1904, show the data collected.


UNDERHILL.

  +-----------+-------+--------------------------------------------------+
  |           |       |                                                  |
  |           |       |                     Urine.                       |
  |           |       |                                                  |
  |   Date.   | Body- +-------+------+-----------+-----------+-----------+
  |           |weight.|Volume.|  Sp. | Nitrogen. | Uric Acid.|   P₂O₅.   |
  |           |       |  24   |  Gr. |           |           |           |
  |           |       |hours. |      |           |           |           |
  +-----------+-------+-------+------+-----------+-----------+-----------+
  |    1903   | kilos |  c.c. |      |   grams   |    gram   |   grams   |
  |           |       |       |      |           |           |           |
  | Oct.   11 |  65.4 | 1300  | 1015 |   10.37   |    0.611  |    1.72   |
  |        12 |       |  700  | 1022 |    9.07   |           |           |
  |        13 |       | 1050  | 1022 |   12.35   |    0.820  |    2.15   |
  |        14 |       | 1400  | 1017 |   12.01   |           |           |
  |        15 |       |  870  | 1020 |   11.48   |    0.671  |    1.76   |
  |        16 |       | 1165  | 1013 |   12.09   |           |           |
  |        17 |       |  840  | 1020 |   11.24   |           |           |
  |        18 |       | 1150  | 1017 |   10.00   |    0.613  |    1.77   |
  |        19 |       |  678  | 1022 |    7.79   |           |           |
  |        20 |       | 1165  | 1018 |   10.76   |    0.603  |    1.60   |
  |        21 |       | 1460  | 1017 |   11.91   |           |           |
  |        22 |       |  950  | 1019 |   10.71   |    0.643  |    1.73   |
  |        23 |       | 1165  | 1017 |   12.82   |           |           |
  |        24 |  65.4 |  850  | 1025 |   12.49   |           |           |

Public-domain text, read in full here on John Shaqi.

Opening the text

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

The diminished amount of fæcal discharge means naturally not only a
smaller intake of food, but implies also a greater utilization of the
food ingested, and as a result the increased percentage of nitrogen
in the discharges shows itself because of the relatively larger
preponderance of nitrogenous secretions from the intestinal tract.

The latter part of September, 1903, Dr. Underhill attempted to return to
his original methods of living, but found difficulty in consuming the
daily quantities of food he had formerly been in the habit of taking.
From October 11 to October 25, 1903, however, he raised the consumption
of proteid food to such a degree that the nitrogen excretion through the
urine averaged from 10 to 12 grams per day. After this date he fell back
to the lower proteid intake, and from that period to June 23, 1904, he
maintained a low level of proteid metabolism without detriment to his
bodily vigor, and, as he believes, with a distinct betterment.

The following tables of results extending from October 11, 1903, to June
23, 1904, show the data collected.


UNDERHILL.

  +-----------+-------+--------------------------------------------------+
  |           |       |                                                  |
  |           |       |                     Urine.                       |
  |           |       |                                                  |
  |   Date.   | Body- +-------+------+-----------+-----------+-----------+
  |           |weight.|Volume.|  Sp. | Nitrogen. | Uric Acid.|   P₂O₅.   |
  |           |       |  24   |  Gr. |           |           |           |
  |           |       |hours. |      |           |           |           |
  +-----------+-------+-------+------+-----------+-----------+-----------+
  |    1903   | kilos |  c.c. |      |   grams   |    gram   |   grams   |
  |           |       |       |      |           |           |           |
  | Oct.   11 |  65.4 | 1300  | 1015 |   10.37   |    0.611  |    1.72   |
  |        12 |       |  700  | 1022 |    9.07   |           |           |
  |        13 |       | 1050  | 1022 |   12.35   |    0.820  |    2.15   |
  |        14 |       | 1400  | 1017 |   12.01   |           |           |
  |        15 |       |  870  | 1020 |   11.48   |    0.671  |    1.76   |
  |        16 |       | 1165  | 1013 |   12.09   |           |           |
  |        17 |       |  840  | 1020 |   11.24   |           |           |
  |        18 |       | 1150  | 1017 |   10.00   |    0.613  |    1.77   |
  |        19 |       |  678  | 1022 |    7.79   |           |           |
  |        20 |       | 1165  | 1018 |   10.76   |    0.603  |    1.60   |
  |        21 |       | 1460  | 1017 |   11.91   |           |           |
  |        22 |       |  950  | 1019 |   10.71   |    0.643  |    1.73   |
  |        23 |       | 1165  | 1017 |   12.82   |           |           |
  |        24 |  65.4 |  850  | 1025 |   12.49   |           |           |

Public-domain text, read in full here on John Shaqi.

Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man: an experimental study

Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man: an experimental study

No reviews yet