Environmental Conditions
What is the difference between the percentage of oxygen in the air at sea level, and the percentage of oxygen in the air on top of Mt. Everest?
0
It increases
What type of exercise is affected the most by altitude?
Aerobic
Which of these hormones does not contribute to increased metabolism during acute altitude exposure?
a. thyroxine
b. norepinephrine
c. epinephrine
d. erythropoietin
d. erythropoietin
The partial pressure of oxygen is ____________ at altitude than at sea level.
lower
What happens to oxygen saturation at altitude?
It drops
What happens to anaerobic performance at altitude?
Nothing
________________ is low oxygen in the blood.
Hypoxemia
What causes an increase in cardiac output at altitude in the first 6-10 days?
Increase in heart rate
It is thought that to get the most benefit for sport performance, you should live ____________ and train ______________.
Live high and train low
Why do you dehydrate quicker at altitude than at sea level?
The air is dryer, which means there is more evaporation
Why does your VO2max drop at altitude?
There is a decreased PO2 pressure gradient, and a decreased maximal cardiac output
Why can we not reach the same level of performance at altitude as we can at sea level?
VO2max is decreased
Why is it easier to climb Mt. Everest without supplemental oxygen in June and July than it is in January?
The barometric pressure in January is 243 mmHg, and the barometric pressure in June and July is 255 mmHg. This means there is more oxygen in the air during June and July.
What causes a decreased level of oxygen in our muscles at altitude?
The drop in pressure gradient
Which of the following events would altitude affect the most?
100m sprint
long jump
javeline
1500m run
800m