altitude and exercise

39 cards

training and living at altitude. acute and long term affects

Created May 1, 2010
by riccit

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	Side A	Side B
1	atmospheric pressure	decreases at higher altitudes
2	partial pressure	same percentage of O2, CO2, and N2 in the air-lower partial pressure
3	hypoxia, normoxia, hyperoxia	1) low PO2 (altitude)2) normal PO2 (sea level)3) high PO2 (trench)
4	boyle's law and altitude	at high altitudes the air expands, but the % of O2 doesnt change-the volume of the gas varies...
5	lightheaded	cerebral blood flow restrictions... elevation makes blood alkalitic
6	barometric pressure and inspired O2 pressure at diff levels	sea level- 760 and 159boulder- 633 and 132pikes peak- 462 and 97
7	AMS and HAPE and HACE	acute mountain sickness- will go away (headache, fatigue, nausea)hape: severHACE- more severe,...
8	capillary transit time (not a limiting factor)	amount of time diffusing of gas between alveolar sacs and pulmonary caps- PaO2 still reaches...
9	effect of altitude on short term anaerobic performance	1) lower PO2 at altitude should have no effect on performance-O2 transport to muscle does not...
10	altitude effect of long term aerobic performance	1) lower PO2 results in poorer aerobic performance -dependent on oxygen delivery to muscle...
11	tokyo vs. mexico (higher altitude)	1) short races: did better in mexico because short races dont require much 022) long races:...
12	hypoxia	decreased PO2---> decreased PAO2---> decreased PaO2---> disruption in homeostasis--->...
13	disruption in homeostasis on endocrine system	adrenal glands are very responsive to increases in PO2, so hypoxia directly affects adrenals...
14	effects of ACUTE exposure to altitude... not once acclimatized	increased resting and submax HR= ^ O2 transport to bloodincreased resting and submax Ventincreased...
15	Hb saturation	-acute exposure to altitude Hb is about 85% saturated (b/c you are trying to pick up more O2...
16	plasma volume and altitude acute	-when you first get there you don't have time to increase RBCs (to increase oxygen carrying...
17	arterial lactate and altitude acute	increases during exercise (not once acclimatized)
18	epinephrine and altitude acute	increases to stimulate glycogenolysis lactate production
19	muscle glucose and altitude acute	acute exposure: increase in glucose instead of fat as fuel source -even more so once acclimatized
20	HR, Q, lactate, epi ACUTE	all increase when first exposed, but after about 14 days of altitude they go back to normal
21	acute hypoxia decreases PO2 which triggers adrenals... then what	epi is released and it increases HR, SV, Q, vasodilation, resting met rate
22	bicarbonate and acc	decreases in CSF and excretion by kidneyswhich increases CO2-H control of ventilation and shifts...
23	RBC and acc	increases which shifts Hb curve to the right Hb concentration takes days/weeks to increase...
24	plasma volume and acc	decreased (increased RBC and hemocrat and Hb)which improves oxygen carrying capacity of blood
25	resting and submax HR with acc	rincreases immediately for restoration of more normal circulatory homeostasis
26	blood pressure and acc	increases to improve tissue perfusion
27	size and number of mito with acc	increases (but not from training, just from living there) which improves muscle biochemistry...
28	why does hemocrat increase when acc	because plasma volumes decreased and RBC increased
29	low oxygen and bone marrow ?	low oxygen in blood stimulates adrenals to release epi.. whcih trigger bone marrow to ^ RBC...
30	SNS and altitiude acc	SNS activity ^ dramatically, thus norepi levels stay elevated for all 21 days at pikes peak?
31	epi once acc	due to hypoxic affect on adrenals (less stimulated w/ adaptation to altitude) thus less released
32	acclimatization overall	leads to ^ Ve and decreased P02--- which stimulates the sympathetics to increase norepi
33	norepi effects once acclimatized	increase vasoconstriction and vascular resistance and blood pressureincrease resting met ratedecrease...
34	why does glucose increase with altitude	it is more efficient to use CHO--- 5.05 kcal/liter o2
35	if you compete at altitude?	train at altitude
36	best scenario?	train low... live high-by living at high altitudes you already have so many adaptations that...
37	why train at lower altitude	to allow one to train at a higher absolute intensityand to maintain high interval training...
38	effects of living high	1) elicits an increase in RBA mass (via EPO) which leads to an increase in VO2 Max 2) over...
39	negative effects of TRAINING at high altitudes	the higher the altitude, the lower the intensity (based on %VO2 max)- training stimulus was...