While jogging, a person has a stroke volume of 130 ml/beat and a heart rate of 120 beats per minute. If their resting stroke volume was 70 ml/beat and resting heart rate was 60 beats per minute, how did this person's cardiac output change?
A) Their cardiac output did not change. Only their respiratory rate changed.
B) During exercise, their cardiac output decreased by 11,400 ml/minute.
C) During exercise, their cardiac output increased by 60 ml/beat.
D) Their cardiac output increased from 4,200 ml/minute to 15,600 ml/minute after jogging.

Question

Quizplus · Accepted Answer

Cardiac output (CO) can be calculated by multiplying stroke volume (SV) by heart rate (HR):

CO = SV x HR

Resting CO = 70 ml/beat x 60 beats/min = 4,200 ml/min

Jogging CO = 130 ml/beat x 120 beats/min = 15,600 ml/min

Therefore, the person's cardiac output increased from 4,200 ml/minute to 15,600 ml/minute after jogging.

While Jogging, a Person Has a Stroke Volume of 130