On the Source of Muscular Power: Arguments and Conclusions Drawn from Observations Upon the Human Subject, Under Conditions of Rest and of Muscular ExerciseD. Appleton, 1878 - 103 páginas Austin Flint, Jr., the fifth in line of medical ancestry, was an eminent physiologist who made studies of nitrogen excretion and cholesterin. -- H.W. Orr. |
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Página 26
... food taken is probably digest- ed and absorbed in six or eight hours , and the elimi- nation of nitrogen by the kidneys is going on con- stantly . It is almost impossible to imagine that the ni- trogen eliminated in the urine during the ...
... food taken is probably digest- ed and absorbed in six or eight hours , and the elimi- nation of nitrogen by the kidneys is going on con- stantly . It is almost impossible to imagine that the ni- trogen eliminated in the urine during the ...
Página 31
... food . In other words , is the muscular substance an apparatus for transforming the force locked up in food into ... Nitrogen . There seems , at the first blush , to be good ground for supposing that the elimination of nitrogen is close ...
... food . In other words , is the muscular substance an apparatus for transforming the force locked up in food into ... Nitrogen . There seems , at the first blush , to be good ground for supposing that the elimination of nitrogen is close ...
Página 32
... food may be restricted to nitrogenized mat- ters , without disturbing nutrition . These matters . are never discharged from the body as albuminoids , but the nitrogen is eliminated mainly in the urea . Under such conditions , and with a ...
... food may be restricted to nitrogenized mat- ters , without disturbing nutrition . These matters . are never discharged from the body as albuminoids , but the nitrogen is eliminated mainly in the urea . Under such conditions , and with a ...
Página 33
... food , or about ten per cent . of the total weight of muscle . It might be assumed that he consumed this amount of ... nitrogen from the body , irrespective of theoretical consider- ations relative to the force - value of food , which ...
... food , or about ten per cent . of the total weight of muscle . It might be assumed that he consumed this amount of ... nitrogen from the body , irrespective of theoretical consider- ations relative to the force - value of food , which ...
Página 34
... food upon the excretion of nitrogen must not be neglected . To meet this latter requirement , it would seem proper , in estimating the amount of nitrogen dis- charged under various conditions , to calculate the proportion of nitrogen ...
... food upon the excretion of nitrogen must not be neglected . To meet this latter requirement , it would seem proper , in estimating the amount of nitrogen dis- charged under various conditions , to calculate the proportion of nitrogen ...
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On the Source of Muscular Power: Arguments and Conclusions Drawn from ... Austin Flint, Jr. Sin vista previa disponible - 2015 |
On the Source of Muscular Power: Arguments and Conclusions Drawn From ... Austin Flint Sin vista previa disponible - 2015 |
On the Source of Muscular Power. Arguments and Conclusions Drawn from ... Austin Flint, Jr. Sin vista previa disponible - 2016 |
Términos y frases comunes
actual amount of heat amount of nitrogen assumed carbonic acid cent Cloth cular daily average Day Period prior days of rest Days of Walking deduct disassimilation elimination of nitrogen estimated excess excretion of nitrogen experiments fæces Fifth 24 Hours five days food and muscle food taken foot-pounds foot-tons force force-value of food grains of nitrogen heat-units Hours after Weston's Hours of Weston's increased Lancet loss of weight Miles walked muscular exercise muscular power muscular substance muscular system muscular tissue nitro nitrogen discharged nitrogen eliminated nitrogen excreted nitrogen of food nitrogenized food nitrogenous matter non-nitrogenized food non-nitrogenous diet nutrition nutritive action one-half miles Pavy Pavy's observations physi physiological pounds prior to Weston's produced quantity of nitrogen represented respiration Second 24 Hours source of muscular Third 24 Hours timated trogen twenty-four hours Urea and Uric Uric Acid urine Weston walked Weston's 6 Days Wislicenus
Pasajes populares
Página 97 - ... develops the capacity for work ; but food is not directly converted into force in the living body nor is it a source of muscular power, except that it maintains the muscular system in a proper condition for work.
Página 34 - Boiled and roasted flesh is converted at once into blood ; while the uric acid and urea are derived from the metamorphosed tissues. The quantity of these products increases with the rapidity of transformation in a given time, but bears no proportion to the amount of food taken in the same period. In a starving man, who is any way compelled to undergo severe and continued exertion, more urea is secreted than in the most highly fed individual, if in a state of rest.
Página 37 - ... more measurable work than the equivalent of the amount of heat which, taken at a most absurdly high figure, could be calculated to result from the burning of the albumen.' They further go on to state that, so far from the oxidation of albuminous substances being the only source of muscular power, ' the substances by the burning of which force is generated in the muscles are not the albuminous constituents of those tissues, but non-nitrogenous substances, either fats or hydrates of carbon,' and...
Página 97 - American pedestrian, which seemed to show that, in his case at least, the excretion of nitrogen is very distinctly increased, both during and after severe muscular work. He accordingly comes to the conclusion that "the exercise of muscular power immediately involves the. destruction of a certain amount of muscular substance, of which the nitrogen excreted is a measure.
Página 7 - By AUSTIN FLINT, Jr., MD, Professor of Physiology in the Bellevue Hospital Medical College, New York, etc., etc. i vol., 8vo, 103 pp. Cloth, $1.00. " There are few questions relating to Philosophy of greater interest and importance than the one which is the subject of this essay. I have attempted to present an accurate statement of my own observations and what seem to me to be the logical conclusions to be drawn from them, as well as from experiments made by others upon the human subject under conditions...