Diet and food : considered in relation to strength and power of endurance, training and athletics / by Alexander Haig.

  • Alexander Haig
Date:
1902
Catalogue details

Licence: In copyright

Credit: Diet and food : considered in relation to strength and power of endurance, training and athletics / by Alexander Haig. Source: Wellcome Collection.

    18/146 page 4
    At 10 it falls, and at 11 is only about 12'5 grains, but at 12 it rises again nearly to 14 grains as the result of some exercise, only to fall more quickly and decidedly down to 11 grains at 1 p.m. At 1.5 food is taken and at 2 there is a rise, but only a slight rise, to 11’5 grains; at 3, however, the full effect of the meal begins to be felt and it rises with a bound to 16‘7 grains per hour. The total for the day being a little over 400 grains, or 17 grains per hour. We see, then, from this figure, that the effect of withholding food for sixteen hours is a steady fall of urea (only the latter part of which we see here), from 17 grains or more per hour down to 11, but this fall is broken from time to time by the effects of exercise, which appears to call out some albumen or nitrogen from some reserve store, about which more presently. We also see that with this fall of urea there is a steady corresponding diminution of strength and power of endurance, that is, of force production, and that with the rise of urea, which at 3 p.m. follows the taking and digestion of food, there is an equally marked rise of general strength and power. We see, then, that the excretion of urea is the measure of the force available, and that its falls and rises accurately register the conditions of the nutri- tion, strength, and endurance of the body. We know also that this urea is generally obtained from the nitrogen in the form of albumen contained
    digitised image 1
    digitised image 2
    digitised image 3