Question

Compared to the heart rate value measured at sea level, when a subject works at the same work rate (e.g., 150 watts) at 3,000 meters altitude, the heart rate is

a. higher.
b. lower.
c. the same.
d. dependent on the conditioning state of the subject.

Answer 1

When working at the same work rate at high altitude, the heart rate is higher compared to sea level due to the decreased atmospheric pressure.

Step-by-step explanation:

When working at the same work rate at 3,000 meters altitude compared to sea level, the heart rate is higher. At high altitude, there is a decrease in atmospheric pressure, which makes it more difficult for the body to achieve the same level of oxygen saturation. As a result, the heart has to work harder to pump enough oxygen to the body.