Written in English
Thesis (M.A.) -- University of Toronto, 1941.
|The Physical Object|
Effects of Breathing Cold and Warm Air on Lung Function and Physical Performance in Asthmatic and Nonasthmatic Athletes during Exercise in the Cold - SANDSUND - - Annals of the New York Academy of Sciences - Wiley Online LibraryCited by: The physiology of acute cold exposure, with particular reference to human performance in the cold in temperature may be the same in two individuals but the ﬁ nal maximal levels may differ. Selected physiological responses of six normal subjects were oberved, during rest and exercise, while they breathed a) ambient, and b) cold ( degrees C) air. All experiments were 10 min in duration, and the exercise experiments consisted of pedaling a bicycle ergometer at loads requiring approximately 60% and 75% of each subject's VO2 by: The muscles of respiration and the lungs themselves are elastic, so when the diaphragm and intercostal muscles relax there is an elastic recoil, which creates a positive pressure (pressure in the lungs becomes greater than atmospheric pressure), and air moves out of the lungs by flowing down its pressure gradient.
Conscious rabbits were exposed to atmospheric air or to 6% CO2 in air at ambient temperatures (Ta) of 5, 20 and 35 degrees C. Measurements were made of rectal temperature (Tre), metabolic rate (MR. Moreover, physiological studies found the confirmations of this psychological effect based on the physiology of the nerve cells. It is known that, for example, some breathing maneuvers (chapter 2), e.g., Valsalva and Miller maneuvers, or breathing air with the same composition at the end of the breath hold, as in the lungs, extends BHT. It’s all about how cold, dry air interacts with your airways and lungs, Jonathan Parsons, M.D., director of the Division of Pulmonary, Critical Care & Sleep Medicine at The Ohio State University. One of the primary problems of flight related to physiology has to do with the fact that the pressure of gases in the atmosphere change as we ascend and descend. It is essential that we have an understanding of the gases found in the atmosphere and their effects upon the body. Other factors, such as temperature change, also need to be.
The physiological effects of low barometric pressures evidently air anti depth of breathing. This method seems from the results to be uincertain, and this uncertainty has, we think, At into cold room: air t.° 5 93 Average per cent.= mm. Hg. At 1 atm pressure (sea level) 80 - % oxygen produces respiratory tract irritation within 8 - 10 hours (but the more severe side effects are limited). Despite these concerns, hyperbaric oxygen treatment is useful in treating certain conditions (carbon monoxide poisoning, injuries resulting in or related to decreased perfusion etc). Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen (O 2) at increased partial cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and ically, the central nervous system condition was called the Paul Bert effect, and the pulmonary condition the Lorrain Smith effect. In book: Patty's Toxicology, 6th Edition (pp) Physiological and pathological effects of short-term exposure to cold aches etc. are common in indoor cold work. Breathing cold air.