While jogging, a person has a stroke volume of 130 ml/beat and a heart rate of 120 beats/minute. If their resting stroke volume was 70 ml/beat and resting heart rate was 60 beats/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 is the product of stroke volume and heart rate.

Resting cardiac output = 70 ml/beat x 60 beats/minute = 4,200 ml/minute.

During jogging cardiac output = 130 ml/beat x 120 beats/minute = 15,600 ml/minute.

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