The Time Course of Mixed Venous Blood Gas Composition following Exercise Onset
Some of our most profound insights into respiratory control mechanisms during exercise have come from the examination of dynamic responses. In particular, the events during the first few seconds after exercise begins have been scrutinized. The consideration of ventilatory and gas exchange responses early in exercise began auspiciously almost 80 years ago with the publication of “The regulation of respiration and circulation during the initial stages of muscular work”1. Krogh and Lindhard measured both ventilation and oxygen uptake in the first few seconds of exercise and found that both increased with no measurable latency.
KeywordsExercise Transition Mixed Venous Oxygen Saturation Muscular Work Abrupt Fall Exercise Onset
Unable to display preview. Download preview PDF.
- 6.R. Casaburi, W. French, W. Stringer, T. Barstow and P. Abdel-Sayed, Mechanism of the abrupt fall in mixed venous oxygen saturation at the onset of exercise, Med. Sci. Sports Exercise 23:S132 (1991).Google Scholar
- 7.R. Casaburi, C. Cooper, R.M. Effros and K. Wasserman, Time course of mixed venous oxygen saturation following various modes of exercise transition, FASEB J. 3:849 (1989).Google Scholar
- 9.K. Wasserman, B.J. Whipp and R. Casaburi, Respiratory control during exercise, in: “Handbook of Physiology. The Respiratory System. Control of Breathing.”, A.P. Fishman, Ed., Am. Physiol. Soc., Bethesda, (1986).Google Scholar