scholarly journals Control of breathing and respiratory gas exchange in high-altitude ducks native to the Andes

2019 ◽  
Vol 222 (7) ◽  
pp. jeb198622 ◽  
Author(s):  
Catherine M. Ivy ◽  
Sabine L. Lague ◽  
Julia M. York ◽  
Beverly A. Chua ◽  
Luis Alza ◽  
...  
Keyword(s):  
Gas Exchange ◽  
High Altitude ◽  
Control Of Breathing ◽  
Respiratory Gas Exchange ◽  
The Andes

Respiratory gas exchange of high altitude adapted chick embryos

1974 ◽  
Vol 21 (1) ◽  
pp. 61-70 ◽  
Author(s):  
O.D. Wangensteen ◽  
H. Rahn ◽  
R.R. Burton ◽  
A.H. Smith
Keyword(s):  
Gas Exchange ◽  
High Altitude ◽  
Chick Embryos ◽  
Respiratory Gas Exchange

Respiratory Gas Exchange and Growth of Bonin Petrel Embryos

1982 ◽  
Vol 55 (2) ◽  
pp. 162-170 ◽  
Author(s):  
Ted N. Pettit ◽  
Gilbert S. Grant ◽  
G. Causey Whittow ◽  
Hermann Rahn ◽  
Charles V. Paganelli
Keyword(s):  
Gas Exchange ◽  
Respiratory Gas Exchange

scholarly journals Coca chewing for exercise: hormonal and metabolic responses of nonhabitual chewers

1996 ◽  
Vol 81 (5) ◽  
pp. 1901-1907 ◽  
Author(s):  
Roland Favier ◽  
Esperanza Caceres ◽  
Laurent Guillon ◽  
Brigitte Sempore ◽  
Michel Sauvain ◽  
...  
Keyword(s):  
Heart Rate ◽  
Gas Exchange ◽  
Oxygen Uptake ◽  
Metabolic Responses ◽  
Physiological Data ◽  
Respiratory Gas Exchange ◽  
Gum Chewing ◽  
Arterial Blood ◽  
Before And After ◽  
Exercise Induced

Favier, Roland, Esperanza Caceres, Laurent Guillon, Brigitte Sempore, Michel Sauvain, Harry Koubi, and Hilde Spielvogel. Coca chewing for exercise: hormonal and metabolic responses of nonhabitual chewers. J. Appl. Physiol. 81(5): 1901–1907, 1996.—To determine the effects of acute coca use on the hormonal and metabolic responses to exercise, 12 healthy nonhabitual coca users were submitted twice to steady-state exercise (∼75% maximal O2 uptake). On one occasion, they were asked to chew 15 g of coca leaves 1 h before exercise, whereas on the other occasion, exercise was performed after 1 h of chewing a sugar-free chewing gum. Plasma epinephrine, norepinephrine, insulin, glucagon, and metabolites (glucose, lactate, glycerol, and free fatty acids) were determined at rest before and after coca chewing and during the 5th, 15th, 30th, and 60th min of exercise. Simultaneously to these determinations, cardiorespiratory variables (heart rate, mean arterial blood pressure, oxygen uptake, and respiratory gas exchange ratio) were also measured. At rest, coca chewing had no effect on plasma hormonal and metabolic levels except for a significantly reduced insulin concentration. During exercise, the oxygen uptake, heart rate, and respiratory gas exchange ratio were significantly increased in the coca-chewing trial compared with the control (gum-chewing) test. The exercise-induced drop in plasma glucose and insulin was prevented by prior coca chewing. These results contrast with previous data obtained in chronic coca users who display during prolonged submaximal exercise an exaggerated plasma sympathetic response, an enhanced availability and utilization of fat (R. Favier, E. Caceres, H. Koubi, B. Sempore, M. Sauvain, and H. Spielvogel. J. Appl. Physiol. 80: 650–655, 1996). We conclude that, whereas coca chewing might affect glucose homeostasis during exercise, none of the physiological data provided by this study would suggest that acute coca chewing in nonhabitual users could enhance tolerance to exercise.

Tracheal System and Respiratory Gas Exchange

2008 ◽  
pp. 3835-3841
Author(s):  
James E. O’Hara ◽  
Igor UsUpensky ◽  
N. J. Bostanian ◽  
John L. Capinera ◽  
Reg Chapman ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Tracheal System ◽  
Respiratory Gas Exchange
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