KNES 360 Lecture Notes - Lecture 7: Oxygen Therapy, Vo2 Max, Partial Pressure
13 Nov 2018
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Athletes will go to higher altitude place either right before event or many days before (a week) Dempsey: interested in respiratory things at sea level for highly trained indurance athletes. At very high (cid:449)orkrates, ve (cid:272)a(cid:374)"t i(cid:374)(cid:272)rease e(cid:374)ough due to la(cid:272)k of lu(cid:374)g a(cid:374)d (cid:272)hest compliance. Very fast transit time of blood through the pulmonary caps. Measure o2 hb saturation all the way up to max intensity: healthy: should stay constant, could show arterial hypoxemia, only some of the athletes exhibited the hypoxemia, was not related to vo2 max. No one knows why it only happens in some aerobic athletes and not all of them. Most healthy people: not limiting at sea level. Placebo effect is probably what makes performance better when its before or after. Pedal revolutions will decrease less with supplemental oxygen: 10% performance increase. Vo2 can be higher as exercise duration continues: 20% more oxygen consumption.
