Question

1. Mary is aware of the many ways the body adapts to training at high altitude. She is a competitive runner and wonders if training in high-altitude environments will help her performance at sea level. She wants to implement a "live high, train low" strategy. How could she achieve this?

a. Live and train at high altitude for one month and then compete at sea level.

b. Move to a town with higher elevation and train in her neighborhood.

c. Sleep in a simulated high altitude environment and train at sea level.

d. Sleep in a simulated sea-level environment and train in a high altitude environment.

2. Jim lives at sea level and is planning to hike Pikes Peak at an altitude of 14,000 feet. As you know, there are environmental differences between locations at sea level and locations at higher elevations.

Which of the following statements are true about the environmental differences between sea level and high-altitude environments? Select all of the true statements.

Select one or more:

a. Reduced barometric pressure increases oxygen availability in the blood.

b. Regardless of elevation, the Earth's atmosphere is always comprised of 20.93% oxygen.

c. As altitude increases, air temperature tends to decrease.

d. Cities at sea level tend to have an average barometric pressure of 430 mmHg.

e. As altitude increases, barometric pressure decreases.

3.

f. At higher altitudes, the atmosphere has a reduced ratio of oxygen to carbon dioxide.

g. As partial pressure of oxygen decreases, it becomes more difficult for the body to deliver adequate oxygen throughout the body.

Answer 1

Ans1:- c). Sleep in a simulated high altitude environment and train at sea level.

Live high/train low is a training method in which athletes live at high altitude and train at low altitude, usually with the goal of improving performance at sea level. The main idea is to reap the benefits of high altitude acclimatization while maintaining the intensity of low altitude training.

Ans 2:-option b, c , e and g are true.

Concept:-

Although the percentage of oxygen in inspired air is constant at different altitudes, the fall in atmospheric pressure at higher altitude decreases the partial pressure of inspired oxygen and hence the driving pressure for gas exchange in the lungs.

Option

A) false , see concept part

B) true

C) true ,

D) false , atm press at sea level is 760mmHg

E) true , because length of air column that is present above dencreases

f) false ---+ ration of all gas remain same at all attitude.

g) true, see concept above