Muscular work, Tema 187Carnegie Institution of Washington, 1913 - 176 páginas |
Dentro del libro
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Página 33
... perspiration existing in many of our experiments , there must have been a greater cutaneous respiration than normal . When the enormous amount of carbon dioxide produced and oxygen absorbed are taken into consideration , it is not ...
... perspiration existing in many of our experiments , there must have been a greater cutaneous respiration than normal . When the enormous amount of carbon dioxide produced and oxygen absorbed are taken into consideration , it is not ...
Página 40
... perspiring toward the end of the period . 4 In the interval before this period the average speed was 82 per minute . The ... perspiration or flushing . The subject , however , found it very hard after coasting . 4 The metronome was used ...
... perspiring toward the end of the period . 4 In the interval before this period the average speed was 82 per minute . The ... perspiration or flushing . The subject , however , found it very hard after coasting . 4 The metronome was used ...
Página 46
... Perspiration was somewhat profuse . 4 In the interval before this period the average speed was 79 per minute . The subject's breathing was slow and labored during the period , and caused distension of the rubber cap of the tension ...
... Perspiration was somewhat profuse . 4 In the interval before this period the average speed was 79 per minute . The subject's breathing was slow and labored during the period , and caused distension of the rubber cap of the tension ...
Página 47
... Perspiration was profuse . 8 The current was lowered to 0.5 ampere at 3h 02m p.m. In the interval before this period the average speed was 65 per minute . The pulse - rate in this interval was at 3h 20m p.m. , 132 ; at 3h 26m p.m. , 130 ...
... Perspiration was profuse . 8 The current was lowered to 0.5 ampere at 3h 02m p.m. In the interval before this period the average speed was 65 per minute . The pulse - rate in this interval was at 3h 20m p.m. , 132 ; at 3h 26m p.m. , 130 ...
Página 48
... Perspiration was pouring from the sub- Ject during the period . He felt that the stethoscope harness was pressing on him . 3 The subject had changed to a more upright position and was therefore much more comfortable . He was cooler ...
... Perspiration was pouring from the sub- Ject during the period . He felt that the stethoscope harness was pressing on him . 3 The subject had changed to a more upright position and was therefore much more comfortable . He was cooler ...
Términos y frases comunes
1.5 amperes a.m. and 9h a.m. Between 9h a.m. the average a.m. The pulse-rate a.m. the subject absorbed per minute age pulse amount approximately Aver average rate Average respira average speed base-line begun at 9h Benedict and Carpenter bicycle ergometer body C.C. amp calories per minute calorimeter cals carbohydrates Carbon dioxide Date cent combustion computed couch diet Duration eliminated per minute external muscular glycogen grams gross efficiency heat equivalent hour increase interval katabolism kilogrammeters kilograms laboratory load Lying M. A. M. without food mechanical efficiency metabolism motor mouthpiece muscular activity no-load Oxygen absorbed oxygen consumption pedals period the average periods the subject perspiration produced pulse-rate at 8h respiration apparatus respiration experiments respiratory quotient revolutions per minute riding series of experiments severe muscular spirometer subject lay subject M. A. M. subject rode tion-rate tions per minute tory quotient values obtained ventilation work-period Zuntz
Pasajes populares
Página 9 - ... point de variation sensible, la conservation de la chaleur animale est due, au moins en grande partie, à la chaleur que produit la combinaison de l'air pur respiré par les animaux avec la base de. l'air fixe que le sang lui fournit.
Página 11 - ... expressed his belief that the blood was driven through the vessels by the mechanical action of the heart, or that respiration took place according to the common laws of the diffusion of gases. The present generation, on the contrary, is hard at work to find out the real causes of the processes which go on in the living body. They do not suppose that there is any other difference between the chemical and the mechanical actions in the living body, and out of it, than can be explained by the more...
Página 9 - La respiration est donc une combustion, à la vérité fort lente, mais d'ailleurs parfaitement semblable à celle du charbon; elle se fait dans l'intérieur des poumons, sans dégager de lumière sensible, parce que la matière du feu, devenue libre, est aussitôt absorbée par l'humidité de ces...
Página 9 - ... how large a quantity of heat might be produced, by proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals.
Página 11 - Whence it appears that one-quarter of the whole amount of vis viva generated by the combustion of food in the animal frame is capable of being applied in producing a useful mechanical effect, — the remaining three-quarters being required in order to keep up the animal heat, etc.
Página 9 - ... proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals. But no circumstances can be imagined in which this method of procuring heat would not be disadvantageous; for more heat might be obtained by using the fodder necessary for the support of a horse, as fuel.
Página 11 - The majority of the physiologists in the last century, and in the beginning of this century, were of opinion that the processes in living bodies were determined by one principal agent which they chose to call the " vital principle." The physical forces in the living body they supposed could be suspended or again set free at any moment, by the influence of the vital principle ; and that by this means this agent could produce changes in the interior of the body, so that the health of the body would...
Página 9 - ... cette combustion se communique au sang qui traverse les poumons, et de là se répand dans tout le système animal. Ainsi l'air que nous respirons sert à deux objets, également nécessaires à notre conservation : il...