Question

doctors can directly measure a persons maximum oxygen intake by measuring their oxygen intake while they _______.
a. do as many push - ups as possible
b. run on a treadmill, which increases speed
c. do jumping jacks until they are tired
d. sit motionless with a resting heart rate
please select the best answer from the choices provided.
a
b
c
d

Explanation:

To measure maximum oxygen intake (VO₂ max), a graded exercise test is typically used, often with a treadmill that increases speed/intensity to push the body to its aerobic limit. Option A (push - ups) and C (jumping jacks) don't provide a controlled, progressive intensity. Option D (resting) measures resting oxygen intake, not maximum. So B is correct as treadmills with increasing speed are standard for VO₂ max testing.

Answer:

B. run on a treadmill, which increases speed