Further experiments on the effect of diet and exercise on the elimination of nitrogen / by E.A. Parkes.

  • Parkes, Edmund A. (Edmund Alexander), 1819-1876.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Further experiments on the effect of diet and exercise on the elimination of nitrogen / by E.A. Parkes. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    lowest point. The kind of exercise, too, viz. digging, which is often attended with intervals of rest, was not a good choice. Moreover, on the 3rd and 4th days he took some common salt, which might possibly have interfered, as it is supposed that chloride of sodium augments the outflow of urea. The experiment was therefore repeated at the period when the body was poor in nitrogen from the use of the concentrated food. Second Experiments on Non-nitrogenous Food {Arrowroot^ Oil of Buttery and Sugar). Previous daily entry of nitrogen= 10*838 grammes. In this series the man did his ordinary work, which was not severe, and tolerably uniform, during the first 3 days. Then on the fourth day he marched 32 miles on level ground, carrying the new valise equipment, the service-kit, 40 rounds of ball ammunition, rifle, bayonet, and great coat. In all the weight was 43^ lb., his own weight being 145^ lb. The work done was therefore 712*8 tons lifted a foot, or, in other words, it was an ex- tremely hard day's work. He did 26 miles quite easily, but then was greatly fatigued and got very tender about the feet, and had pains in the calves of the legs. The next day he was, however, quite well, and declared that he did not feel in the least weakened from having been 5 days on starch and butter. The march commenced at 8 a.m., and with intervals of hour for meals, lasted till 7.30, so that actual muscular work both of arms and legs was going on for 10 hours. The daily ingress of chloride of sodium was uniform during the 5 days. Elimination of urinary water, in cub. centims. 8 A.M. to 8 P.M. 8 P.M. to 8 A.M. Total. 950 920 800 585 765 570 550 470 325 495 1520 1470 1270 910 1260 Urea, in grammes. 8 A.M. to 8 P.M. 8 P.M. to 8 A.M. Total. 3rd day, usual work 4*563 9-562 2762 6*435 13*072 10-731 9-271 7'323 i5'997