ES 380 Lecture Notes - Lecture 13: High-Altitude Cerebral Edema, Skeletal Muscle, Hypoxic Pulmonary Vasoconstriction
2 Jan 2017
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Document Summary
Chapter 13 overview: environmental conditions at altitude, physiological responses to acute altitude exposure, exercise and sport performance at altitude, acclimation: chronic exposure to altitude, altitude: optimizing training and performance, health risks of acute exposure to altitude. Introduction to exercise at altitude: barometric pressure (pb) ~760 mmhg at sea level, partial pressure of oxygen (po2) 0. 2093 x pb ~159 mmhg at sea level. Reduced po2 at altitude limits exercise performance: hypobaria. Environmental conditions at altitude: sea level (<500 m): no effects, low altitude (500-2,000 m) Performance may be , restored by acclimation: moderate altitude (2,000-3,000 m) Performance may or may not be restored by acclimation: high altitude (3,000-5,500 m) Performance , not restored by acclimation: extreme high altitude (>5,500 m) Highest settlements: 5,200 to 5,800 m: for our purposes, altitude = >1,500 m. Few (if any) physiological effects <1,500 m: pb at sea level exerted by a 24 mile tall air column.
